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 [Search a list of Patent Appplications for class 548]   CLASS 548,ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES
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SUBCLASSES

[List of Patents for class 548 subclass 100]    100Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.)
 This subclass is indented under subclass 1.  Compounds under Class 540 which contain a five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 101]    101Heavy metal or aluminum containing
 This subclass is indented under subclass 100.  Compounds which include aluminum or a metal having a specific gravity greater than 4.
(1) Note. Arsenic is considered a metal.

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110,for compounds containing boron or silicon.
  
[List of Patents for class 548 subclass 102]    102Arsenic containing
 This subclass is indented under subclass 101.  Compounds which contain arsenic.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 103]    103The metal is bonded directly to carbon, which carbon is a ring carbon of the five-membered hetero ring or which carbon is attached directly or indirectly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 101.  Compounds wherein the metal is bonded directly (a) to a ring carbon of the five-membered hetero ring or (b) to a carbon atom which additionally is attached directly or indirectly to the five-membered hetero ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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(2) Note. Excluded from this subclass are compounds such as those in Fig. 1 below, which require "doubling back" through the metal to satisfy the conditions necessary for inclusion here.

Figure 1

Figure 1

  
[List of Patents for class 548 subclass 104]    104The metal is bonded directly to chalcogen of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens, which group is attached directly or indirectly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 101.  Compounds wherein the metal is bonded directly to the singly bonded chalcogen of a X group, wherein the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium), which group is attached directly or indirectly to the five-membered hetero ring by nonionic bonding.
(1) Note. These compounds are usually referred to as "salts".
(2) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 105]    105The metal is bonded directly to chalcogen which chalcogen is attached directly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 101.  Compounds wherein the metal is bonded directly to a chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) which is attached directly to a ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 106]    106The metal is bonded directly to chalcogen which chalcogen is attached indirectly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 101.  Compounds wherein the metal is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) which is attached additionally indirectly to the five-membered hetero ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 107]    107The metal is in an anion and the five-membered hetero ring is in a cation
 This subclass is indented under subclass 101.  Compounds wherein the metal is in an anion, i.e., a group having a negative charge, and the five-membered hetero ring is in a cation, i.e., a group having a positive charge.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 108]    108Polycyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 101.  Compounds wherein the five-membered hetero ring is a cyclo in a polycyclo ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 109]    109Azide or acyclic nitrogen containing
 This subclass is indented under subclass 101.  Compounds which contain an acyclic nitrogen atom or the azide group.
(1) Note. The azide group has been considered to be cyclic, as well as acyclic,
(2) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 110]    110Boron or silicon containing
 This subclass is indented under subclass 100.  Compounds which contain boron or silicon.
  
[List of Patents for class 548 subclass 111]    111Phosphorus attached directly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 100.  Compounds wherein phosphorus is attached directly to the five-membered hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 112]    112Phosphorus attached indirectly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 100.  Compounds wherein phosphorus is attached indirectly to the five-membered hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 113]    113Polycyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 112.  Compounds wherein the five-membered hetero ring is one of the cyclos of a polycyclo ring system.
(1) Note. Compounds in which phosphorus is attached directly by nonionic bonding to any ring of the polycyclo ring system other than the five-membered hetero ring are provided for herein as the attachment of the phosphorus to the five-membered hetero ring is considered to be indirect.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 114]    114The polycyclo ring system and phosphorus are both bonded directly to the same chalcogen
 This subclass is indented under subclass 113.  Compounds wherein the polycyclo ring system and phosphorus are both bonded directly to the same chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 115]    115The five-membered hetero ring and phosphorus are both bonded directly to the same nitrogen
 This subclass is indented under subclass 112.  Compounds in which the five-membered hetero ring and phosphorus are both bonded directly to the same nitrogen atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 116]    116The five-membered hetero ring and phosphorus are both bonded directly to the same chalcogen
 This subclass is indented under subclass 112.  Compounds in which the five-membered hetero ring and phosphorus are both bonded directly to the same chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 117]    117The five-membered hetero ring contains chalcogen as a ring hetero atom
 This subclass is indented under subclass 116.  Compounds wherein the five-membered hetero ring contains chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) as a ring hetero atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 118]    118The five-membered hetero ring contains at least three ring nitrogens
 This subclass is indented under subclass 116.  Compounds wherein the five-membered hetero ring contains three or more ring nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 119]    119The phosphorus is part of a substituent which is attached directly to ring carbon of the five-membered hetero ring
 This subclass is indented under subclass 112.  Compounds wherein the phosphorus is contained in a substituent which is attached directly to ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 120]    120The five-membered hetero ring contains ring selenium and is one of the cyclos in a polycyclo ring system
 This subclass is indented under subclass 100.  Compounds wherein the five-membered hetero ring contains ring selenium as an additional hetero atom and is one of the cylcos in a polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 121]    121Bicyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 120.  Compounds in which the polycyclo ring system consists of exactly two rings, one of which is the five-membered hetero ring containing nitrogen and selenium as hetero atoms.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 122]    122The five-membered hetero ring consists of sulfur, oxygen, nitrogen, and carbon
 This subclass is indented under subclass 100.  Compounds wherein the five-membered hetero ring includes at least one atom each of sulfur, oxygen, nitrogen, and carbon and contains no other elements as ring members.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 123]    123Plural ring sulfurs in the five-membered hetero ring
 This subclass is indented under subclass 100.  Compounds wherein the five-membered hetero ring contains at least two ring sulfurs in addition to the ring nitrogen and ring carbon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 124]    124Plural ring oxygens in the five-membered hetero ring
 This subclass is indented under subclass 100.  Compounds wherein the five-membered hetero ring contains at least two ring oxygens in addition to the ring nitrogen and ring carbon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 125]    125The five-membered hetero ring consists of chalcogen, plural nitrogens, and carbon
 This subclass is indented under subclass 100.  Compounds wherein the five-membered hetero ring includes at least one atom each of chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) and carbon and at least two ring nitrogens, and contains no other elements as ring members.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 126]    126Polycyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 125.  Compounds wherein the five-membered hetero ring is one of the cyclos of a polycyclo ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 127]    1271,2,3-thiadiazoles (including hydrogenated)
 This subclass is indented under subclass 125.  Compounds in which the five-membered hetero ring has sulfur in the 1-position, nitrogens in the 2- and 3-positions, and carbons in the remaining two positions.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members:

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(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 128]    1281,2,4-thiadiazoles (including hydrogenated)
 This subclass is indented under subclass 125.  Compounds in which the five-membered hetero ring has sulfur in the 1-position, nitrogens in the 2- and 4-positions, and carbons in the remaining two positions.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members.

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[List of Patents for class 548 subclass 129]    129Chalcogen bonded directly to ring carbon of the thiadiazole ring
 This subclass is indented under subclass 128.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the ring carbon of the thiadiazole ring.
  
[List of Patents for class 548 subclass 130]    130Nitrogen or additional chalcogen bonded directly to ring carbon of the thiadiazole ring
 This subclass is indented under subclass 129.  Compounds which contain nitrogen or additional chalcogen bonded directly to ring carbon of the thiadiazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 131]    1311,2,4-oxadiazoles (including hydrogenated)
 This subclass is indented under subclass 125.  Compounds in which the five-membered hetero ring has oxygen in the 1-position, nitrogens in the 2- and 4-positions, and carbons in the remaining two positions.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members.

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[List of Patents for class 548 subclass 132]    132Chalcogen bonded directly to ring carbon of the oxadiazole ring
 This subclass is indented under subclass 131.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the oxadiazole ring.
  
[List of Patents for class 548 subclass 133]    133Nitrogen attached directly to the oxadiazole ring by nonionic bonding
 This subclass is indented under subclass 131.  Compounds wherein nitrogen is attached directly to the oxadiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 134]    1341,2,5-thiadiazoles (including hydrogenated)
 This subclass is indented under subclass 125.  Compounds in which the five-membered hetero ring has sulfur in the 1-position, nitrogens in the 2- and 5-positions, and carbons in the remaining two positions.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members:

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[List of Patents for class 548 subclass 135]    135Chalcogen or nitrogen attached directly to ring carbon of the thiadiazole ring by nonionic bonding
 This subclass is indented under subclass 134.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen is attached directly to ring carbon of the thiadiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 136]    1361,3,4-thiadiazoles (including hydrogenated)
 This subclass is indented under subclass 125.  Compounds in which the five-membered hetero ring has sulfur in the 1-position, nitrogens in the 3- and 4-positions, and carbons in the remaining two positions.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members:

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[List of Patents for class 548 subclass 137]    137Diazole ring attached directly to the thiadiazole ring by nonionic bonding
 This subclass is indented under subclass 136.  Compounds wherein a five-membered hetero ring consisting of two nitrogens and three carbons is attached directly to the thiadiazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 138]    138Nitrogen attached directly to the thiadiazole ring by nonionic bonding
 This subclass is indented under subclass 136.  Compounds wherein nitrogen is attached directly to the thiadiazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 139]    139Having -C(=X)-, wherein X is chalcogen, attached directly to the nitrogen by nonionic bonding
 This subclass is indented under subclass 138.  Compounds in which a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is attached directly to the nitrogen by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 140]    140Additional nitrogen attached directly to the -C(=X)- group by nonionic bonding
 This subclass is indented under subclass 139.  Compounds in which an additional nitrogen is attached directly to the group by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 141]    141Chalcogen or additional nitrogen attached directly to ring carbon of the thiadiazole ring by nonionic bonding
 This subclass is indented under subclass 138.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or additional nitrogen is attached directly to ring carbon of the thiadiazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 142]    142Chalcogen bonded directly to the 2- and 5- positions of the thiadiazole ring
 This subclass is indented under subclass 136.  Compounds wherein chalcogen (i.e., oxygen, sulfur selenium, or tellurium) is bonded directly to each of the ring carbons of the thiadiazole ring, i.e., the 2- and 5-positions.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 143]    1431,3,4-oxadiazoles (including hydrogenated)
 This subclass is indented under subclass 125.  Compounds in which the five-membered hetero ring has oxygen in the 1-position, nitrogens in the 3- and 4-positions, and carbons in the remaining two positions.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members:

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[List of Patents for class 548 subclass 144]    144Chalcogen bonded directly to ring carbon of the oxadiazole ring
 This subclass is indented under subclass 143.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the oxadiazole ring.
  
[List of Patents for class 548 subclass 145]    145Plural carbocyclic rings bonded directly to the oxadiazole ring
 This subclass is indented under subclass 143.  Compounds wherein at least two carbocyclic rings are bonded directly to the oxadiazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 146]    1461,3-thiazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds in which the five-membered hetero ring has sulfur in the 1-position, nitrogen in the 3-position, and carbons in the remaining three positions.
(1) Note. This subclass provides for compounds containing the following ring which may have a double bond between its members:

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[List of Patents for class 548 subclass 147]    147Spiro
 This subclass is indented under subclass 146.  Compounds which contain a spiro ring system.
(1) Note. This subclass provides for compounds containing a 1,3-thiazole ring and a spiro ring system whether or not the thiazole ring is one of the cyclos in the spiro system.
(2) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 148]    148Polycyclo ring system having the thiazole ring as one of the cyclos
 This subclass is indented under subclass 146.  Compounds wherein the thiazole ring is a cyclo in a polycyclo ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 149]    149Tetracyclo ring system having the thiazole ring as one of the cyclos
 This subclass is indented under subclass 148.  Compounds in which the polycyclo ring system consists of exactly four rings.
  
[List of Patents for class 548 subclass 150]    150Tricyclo ring system having the thiazole ring as one of the cyclos
 This subclass is indented under subclass 148.  Compounds in which the polycylco ring system consists of exactly three rings.
  
[List of Patents for class 548 subclass 151]    151At least three ring hetero atoms in the tricyclo ring system
 This subclass is indented under subclass 150.  Compounds wherein the tricyclo ring system contains at least one ring hetero atom in addition to the ring sulfur and ring nitrogen of the thiazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 152]    152Bicyclo ring system having the thiazole ring as one of the cyclos
 This subclass is indented under subclass 148.  Compounds in which the polycyclo ring system consists of exactly two rings.
  
[List of Patents for class 548 subclass 153]    153At least three ring hetero atoms in the bicyclo ring system
 This subclass is indented under subclass 152.  Compounds wherein the bicyclo ring system contains at least one ring hetero atom in addition to the ring sulfur and ring nitrogen of the thiazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 154]    154Ring nitrogen is shared by the two cyclos
 This subclass is indented under subclass 153.  Compounds wherein the ring nitrogen is a member of both of the cyclos in the bicyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 155]    155Tetramisole per se or salt thereof (including hydrogenated)
 This subclass is indented under subclass 154.  Compounds which have the following structure, or salts thereof, in which the bonds between the ring members may be single or double bonds:

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[List of Patents for class 548 subclass 156]    156Plural benzothiazoles (including hydrogenated)
 This subclass is indented under subclass 152.  Compounds containing at least two of the bicyclo ring systems having the following structure, which may contain double bonds between ring members:

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[List of Patents for class 548 subclass 157]    157Chalcogen bonded directly to ring carbon of the thiazole ring
 This subclass is indented under subclass 156.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the thiazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 158]    158Plural benzothiazole ring systems bonded directly to chain consisting of plural sulfurs
 This subclass is indented under subclass 157.  Compounds which contain a polysulfide linkage between at least two benzothiazole ring systems.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 159]    159Additional polycyclo heterocyclic ring system containing
 This subclass is indented under subclass 152.  Compounds containing an additional hetero ring which is one of the cyclos in a polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 160]    160Polycyclo-carbocyclic ring system having at least three cyclos
 This subclass is indented under subclass 152.  Compounds which contain a polycyclo-carbocyclic ring system having at least three cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 161]    161Nitrogen attached directly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 152.  Compounds wherein the nitrogen is attached directly to the thiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 162]    162The nitrogen is a ring hetero atom
 This subclass is indented under subclass 161.  Compounds wherein the nitrogen is a ring member of a hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 163]    163Carbonyl or thiocarbonyl bonded directly to the nitrogen
 This subclass is indented under subclass 161.  Compounds wherein the nitrogen is bonded additionally directly to a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 164]    164The nitrogen bonded additionally only to hydrogen
 This subclass is indented under subclass 161.  Compounds wherein the nitrogen is bonded additionally only to hydrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 165]    165Chalcogen bonded directly to ring carbon of the thiazole ring
 This subclass is indented under subclass 152.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to a ring carbon of the thiazole ring.
(1) Note. An example of a compound provided for herein are:

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[List of Patents for class 548 subclass 166]    166Chalcogen bonded directly to the chalcogen
 This subclass is indented under subclass 165.  Compounds wherein an additional chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the chalcogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 167]    167Nitrogen attached directly to the chalcogen by nonionic bonding
 This subclass is indented under subclass 165.  Compounds wherein nitrogen is attached directly to the chalcogen by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 168]    168The nitrogen is bonded additionally directly to two carbons
 This subclass is indented under subclass 167.  Compounds wherein the nitrogen is bonded additionally directly to two carbons.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 169]    169Chalcogen attached indirectly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 165.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the thiazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 170]    170The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 169.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 171]    171Nitrogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 170.  Compounds in which nitrogen is bonded directly to the group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 172]    172Nitrogen attached directly to chalcogen by nonionic bonding
 This subclass is indented under subclass 169.  Compounds in which nitrogen is attached directly to chalcogen by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 173]    173Halogen attached directly or indirectly to the bicyclo ring system by nonionic bonding
 This subclass is indented under subclass 165.  Compounds wherein halogen is attached directly or indirectly to the bicyclo ring system by nonionic bonding.
  
[List of Patents for class 548 subclass 174]    174Sulfur double bonded or thiol bonded directly to ring carbon of the thiazole ring
 This subclass is indented under subclass 165.  Compounds in which sulfur attached directly to a ring carbon of the thiazole ring is either (a) attached by a double bond or (b) in a -SH or -SM group, wherein M is a Group IA or Group IIA light metal, i.e., a metal having a specific gravity less than 4.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 175]    175Process of forming the bicyclo ring system
 This subclass is indented under subclass 174.  Processes in which the bicyclo ring system is formed.
(1) Note. Included herein are processes of forming the bicyclo ring system by any means e.g., ring enclosure, ring expansion, etc.
  
[List of Patents for class 548 subclass 176]    176Aniline or alkyl derivative thereof utilized as starting material
 This subclass is indented under subclass 175.  Processes which utilize aniline or an alkylated derivative thereof as a starting material.
  
[List of Patents for class 548 subclass 177]    177Purification or recovery
 This subclass is indented under subclass 174.  Processes wherein the sulfur derivative of the bicyclo ring system is separated from impurities or from the reaction mixture.
  
[List of Patents for class 548 subclass 178]    178Chalcogen or nitrogen attached directly to the other cyclo of the bicyclo ring system by nonionic bonding
 This subclass is indented under subclass 152.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen is attached directly to the other cyclo of the bicyclo ring system by nonionic bonding, i.e., the cyclo other than the thiazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 179]    179Chalcogen attached indirectly to the bicyclo ring system by nonionic bonding
 This subclass is indented under subclass 152.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the bicyclo ring system by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 180]    180The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 179.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
  
[List of Patents for class 548 subclass 181]    181Polycyclo heterocyclic ring system containing ring nitrogen
 This subclass is indented under subclass 146.  Compounds containing a polycyclo heterocyclic ring system which has nitrogen as a ring hetero atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 182]    182Chalcogen bonded directly to ring carbon of the thiazole ring
 This subclass is indented under subclass 146.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the thiazole ring.
(1) Note. Examples of compounds provided herein are:

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[List of Patents for class 548 subclass 183]    183Plural chalcogens bonded directly to ring carbons of the thiazole ring
 This subclass is indented under subclass 182.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the thiazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 184]    184Nitrogen attached directly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 182.  Compounds wherein nitrogen is attached directly to the thiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 185]    185Having -C(=X)-, wherein X is chalcogen, bonded directly to nitrogen
 This subclass is indented under subclass 184.  Compounds in which nitrogen is bonded directly to a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 186]    186Chalcogen attached indirectly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 182.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the thiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 187]    187The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 186.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
  
[List of Patents for class 548 subclass 188]    188The -C(=X)- group is bonded directly to the thiazole ring
 This subclass is indented under subclass 187.  Compounds in which the group is bonded directly to the thiazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 189]    189Nitrogen attached indirectly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 182.  Compounds wherein nitrogen is attached indirectly to the thiazole ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 190]    190Nitrogen attached directly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 146.  Compounds in which nitrogen is attached directly to the thiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 191]    191Plural nitrogens attached directly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 190.  Compounds wherein at least two nitrogens are attached directly to the thiazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 192]    192Nitrogen bonded directly to a -C(=X)- group, wherein X is chalcogen
 This subclass is indented under subclass 191.  Compounds in which X nitrogen is bonded directly to a -C- group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 193]    193Chalcogen attached indirectly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 190.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the thiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 194]    194The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 193.  Compounds in which the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 195]    195The -C(=X)- group is bonded directly to the nitrogen
 This subclass is indented under subclass 194.  Compounds in which the nitrogen is bonded directly to the group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 196]    196Chalcogen or additional nitrogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 195.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or an additional nitrogen is bonded directly to the group.
  
[List of Patents for class 548 subclass 197]    197Nitrogen bonded directly to chalcogen
 This subclass is indented under subclass 193.  Compounds wherein nitrogen is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 198]    198Nitrogen attached indirectly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 190.  Compounds wherein nitrogen is attached indirectly to the thiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 199]    199The nitrogen is bonded additionally only to hydrogen
 This subclass is indented under subclass 190.  Compounds wherein the nitrogen is bonded additionally to hydrogen.
  
[List of Patents for class 548 subclass 200]    200Having -C(=X)-, wherein X is chalcogen, bonded directly to the thiazole ring
 This subclass is indented under subclass 146.  Compounds wherein a group, in which X is chalcogen, (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the thiazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 201]    201The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 200.  Compounds in which the is part of a X group, wherein the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 202]    202Plural double bonds between ring members of thiazole ring
 This subclass is indented under subclass 146.  Compounds in which there are two double bonds between the ring members of the thiazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 203]    203Chalcogen attached indirectly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 202.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the thiazole ring by nonionic bonding.
  
[List of Patents for class 548 subclass 204]    204The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 203.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
  
[List of Patents for class 548 subclass 205]    205Nitrogen attached indirectly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 203.  Compounds in which nitrogen is attached indirectly to the thiazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 206]    2061,2-thiazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds in which the five-membered hetero ring has sulfur in the 1-position, nitrogen in the 2-position, and carbons in the remaining three positions.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members:

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[List of Patents for class 548 subclass 207]    207Polycyclo ring system having the thiazole ring as one of the cyclos
 This subclass is indented under subclass 206.  Compounds wherein the thiazole ring is a cyclo in a polycyclo ring system.
(1) Note. A thiazole ring in a polycyclo ring system is numbered as if it were a single ring and not part of a ring system; accordingly, the thiazole ring in each of the following poly-cyclo ring systems is considered to be 1, 2-thiazole:

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(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 208]    208Ring carbon is shared by three of the cyclos of the polycyclo ring system
 This subclass is indented under subclass 207.  Compounds wherein one ring carbon is a member of three of the cyclos in the polycyclo ring system (i.e., peri-fusion).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 209]    209Acyclic chalcogen bonded directly to ring carbon of the thiazole ring
 This subclass is indented under subclass 207.  Compounds wherein acyclic chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to a ring carbon of the thiazole ring.
  
[List of Patents for class 548 subclass 210]    210At least three chalcogens bonded directly to the thiazole ring
 This subclass is indented under subclass 209.  Compounds in which at least three chalcogens (i.e, oxygen, sulfur, selenium, or tellurium) are bonded directly to the thiazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 211]    211Saccharin per se or salt thereof
 This subclass is indented under subclass 210.  Compounds which have the following structure, or salts thereof:

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[List of Patents for class 548 subclass 212]    212Nitrogen attached directly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 207.  Compounds wherein nitrogen is attached directly to the thiazole ring of the polycyclo ring system by nonionic bonding.
  
[List of Patents for class 548 subclass 213]    213Chalcogen bonded directly to ring carbon of the thiazole ring
 This subclass is indented under subclass 206.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the thiazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 214]    214Nitrogen or chalcogen attached indirectly to the thiazole ring by nonionic bonding
 This subclass is indented under subclass 206.  Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the thiazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 215]    2151,3-oxazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds in which the five-membered hetero ring has oxygen in the 1-position, nitrogen in the 3-position, and carbons in the remaining three positions.
(1) Note. This subclass provides for compounds containing the following ring:

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[List of Patents for class 548 subclass 216]    216Spiro
 This subclass is indented under subclass 215.  Compounds which contain a spiro ring system.
(1) Note. This subclass provides for compounds containing a 1, 3-oxazole ring and a spiro ring system whether or not the oxazole ring is one of the cyclos in the spiro system.
(2) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 217]    217Polycyclo ring system having the oxazole ring as one of the cyclos
 This subclass is indented under subclass 215.  Compounds wherein the oxazole ring is cyclo in a polycyclo ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 218]    218At least three ring hetero atoms in the polycyclo ring system
 This subclass is indented under subclass 217.  Compounds wherein the polycyclo ring system contains at least one ring hetero atom in addition to the ring oxygen and ring nitrogen of the oxazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 219]    219Plural polycyclo ring systems having the oxazole ring as one of the cyclos in each of the ring systems
 This subclass is indented under subclass 217.  Compounds which contain at least two of the oxazole-containing polycyclo ring systems.
(1) Note. An example of a compound provided for herein is:
  
[List of Patents for class 548 subclass 220]    220Plural oxazole-containing polycyclo ring systems each bonded directly to the same polycyclo ring system or the same hetero ring
 This subclass is indented under subclass 219.  Compounds wherein the plural oxazole-containing polycyclo ring systems are each bonded directly either (a) to the same polycyclo ring system or (b) to the same hetero ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 221]    221Chalcogen bonded directly at the 2-position of the oxazole ring
 This subclass is indented under subclass 217.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the carbon in the 2-position of the oxazole ring, i.e., the ring carbon between the ring oxygen and the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 222]    222Nitrogen bonded directly at the 2-position of the oxazole ring
 This subclass is indented under subclass 217.  Compounds wherein nitrogen is bonded directly to the carbon in the 2-position of the oxazole ring, i.e., the ring carbon between the ring oxygen and the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 223]    223At least four rings in the polycyclo ring system
 This subclass is indented under subclass 217.  Compounds wherein the polycyclo ring system contains at least four rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 224]    224Carbocyclic ring bonded directly at the 2-position of the oxazole ring
 This subclass is indented under subclass 217.  Compounds wherein a carbocyclic ring is bonded directly to the carbon atom in the 2-position of the oxazole ring, i.e., the ring carbon between the ring oxygen and the ring nitrogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 225]    225Chalcogen bonded directly to ring carbon of the oxazole ring
 This subclass is indented under subclass 215.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the oxazole ring.
  
[List of Patents for class 548 subclass 226]    226Plural chalcogens bonded directly to ring carbons of the oxazole ring
 This subclass is indented under subclass 225.  Compounds wherein at least two chalcogens (i.e, oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the oxazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 227]    227Chalcogens bonded directly at 2- and 5-positions of the oxazole ring
 This subclass is indented under subclass 226.  Compounds wherein chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to the carbons in the 2- and 5-positions of the oxazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 228]    228Chalcogen bonded directly at 5-position of the oxazole ring
 This subclass is indented under subclass 225.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the carbon atom in the 5-position of the oxazole ring.
  
[List of Patents for class 548 subclass 229]    229Chalcogen bonded directly at 2-position of the oxazole ring
 This subclass is indented under subclass 225.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the carbon atom in the 2-position of the oxazole ring, i.e., the ring carbon between the ring oxygen and the ring nitrogen.
  
[List of Patents for class 548 subclass 230]    230Nitrogen, halogen, or -C(=X)-, wherein X is chalcogen, attached directly to the oxazole ring by nonionic bonding
 This subclass is indented under subclass 229.  Compounds wherein nitrogen, halogen, or, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is attached directly to the oxazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 231]    2313-position substituent contains ethylenic or acetylenic unsaturation or nitrogen
 This subclass is indented under subclass 229.  Compounds wherein the substituent on the ring nitrogen contains nitrogen or ethylenic or acetylenic unsaturation, i.e., double or triple bond between two adjacent carbons.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 232]    2324- or 5-position substituent contains chalcogen
 This subclass is indented under subclass 229.  Compounds wherein the substituent on the 4- or 5-position of the oxazole ring contains chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 233]    233Nitrogen bonded directly to ring carbon of the oxazole ring
 This subclass is indented under subclass 215.  Compounds wherein nitro- is bonded directly to ring carbon of the oxazole ring.
  
[List of Patents for class 548 subclass 234]    234Additional ring attached directly to the nitrogen by nonionic bonding
 This subclass is indented under subclass 233.  Compounds in which an additional ring is attached directly to the nitrogen by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 235]    235Plural double bonds between the ring members of the oxazole ring
 This subclass is indented under subclass 215.  Compounds in which there are two double bonds between the ring members of the oxazole ring.
  
[List of Patents for class 548 subclass 236]    236Cyano or -C(=X)-, wherein X is chalcogen, attached directly or indirectly to the oxazole ring by nonionic bonding
 This subclass is indented under subclass 235.  Compounds wherein -CN or, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is attached directly or indirectly to the oxazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 237]    237One double bond between the ring members of the oxazole ring
 This subclass is indented under subclass 215.  Compounds in which there is only one double bond between ring members of the oxazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 238]    2382-position substituent contains nitrogen, other than as nitro or nitroso
 This subclass is indented under subclass 237.  Compounds wherein the substituent attached to the ring carbon in the 2-position, i.e., the ring carbon between the ring oxygen and the ring nitrogen, contains nitrogen, except as a member of the nitro (-NO2) or nitroso (-NO) group.
  
[List of Patents for class 548 subclass 239]    2392-position is unsubstituted or hydrocarbyl substituted only
 This subclass is indented under subclass 237.  Compounds wherein attached to the ring carbon in the 2-position of the oxazole ring, i.e., the ring carbon between the ring oxygen and the ring nitrogen, is either hydrogen or a hydrocarbon radical only.
(1) Note. Examples of compounds provided herein are:

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[List of Patents for class 548 subclass 240]    2401,2-oxazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds in which the five-membered hetero ring has oxygen in the 1 position, nitrogen in the 2-position, and carbons in the remaining three positions.
(1) Note. This subclass provided for compounds containing the following ring which may have a double bond between its members:

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[List of Patents for class 548 subclass 241]    241Polycyclo ring system having the oxazole ring as one of the cyclos
 This subclass is indented under subclass 240.  Compounds wherein the oxazole ring is a cyclo in a polycyclo ring system.
(1) Note. Examples of compounds provided herein are:

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[List of Patents for class 548 subclass 242]    242At least three ring hetero atoms in the polycyclo ring system
 This subclass is indented under subclass 241.  Compounds wherein the polycyclo ring system contains at least one ring hetero atom in addition to the ring oxygen and ring nitrogen of the oxazole ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 243]    243Chalcogen bonded directly to ring carbon of the oxazole ring
 This subclass is indented under subclass 240.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the oxazole ring.
  
[List of Patents for class 548 subclass 244]    244Nitrogen bonded directly to ring carbon of the oxazole ring
 This subclass is indented under subclass 243.  Compounds in which nitrogen is bonded directly to ring carbon of the oxazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 245]    245Nitrogen bonded directly to ring carbon of the oxazole ring
 This subclass is indented under subclass 240.  Compounds in which nitrogen is bonded directly to ring carbon of the oxazole ring.
  
[List of Patents for class 548 subclass 246]    246Nitrogen bonded directly to the 3-position of the oxazole ring
 This subclass is indented under subclass 245.  Compounds wherein nitrogen is bonded directly to the carbon atom in the 3-position of the oxazole ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 247]    247Plural double bonds between ring members of the oxazole ring
 This subclass is indented under subclass 240.  Compounds in which there are two double bonds between the ring members of the oxazole ring.
  
[List of Patents for class 548 subclass 248]    248Having -C(=X)-, wherein X is chalcogen, bonded directly to ring carbon of the oxazole ring by nonionic bonding
 This subclass is indented under subclass 247.  Compounds wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to a ring carbon of the oxazole ring and additionally directly to a chalcogen or nitrogen atom.
(1) Note.Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 249]    2494-position substituent contains plural chalcogens, attached indirectly to the oxazole ring by nonionic bonding, none of which is bonded directly to phenyl
 This subclass is indented under subclass 247.  Compounds wherein the substituent attached to the 4-position of the oxazole ring contains at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium), each of which is attached indirectly to the oxazole ring by nonionic bonding and not one of which is bonded directly to a phenyl ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 250]    250Tetrazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds in which the five-membered hetero ring consists of four ring nitrogens and one ring carbon.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members:

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[List of Patents for class 548 subclass 251]    251Chalcogen or nitrogen attached directly to the tetrazole ring by nonionic bonding
 This subclass is indented under subclass 250.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen is attached directly to the tetrazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 252]    252Chalcogen attached indirectly to the tetrazole ring by nonionic bonding
 This subclass is indented under subclass 250.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the tetrazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 253]    253The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 252.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium) is in a group.
  
[List of Patents for class 548 subclass 254]    254Nitrogen attached indirectly to the tetrazole ring by nonionic bonding
 This subclass is indented under subclass 250.  Compounds wherein nitrogen is attached indirectly to the tetrazole ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 255]    2551,2,3-triazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds in which the five-membered hetero ring has nitrogens in the 1-, 2-, and 3-positions and carbons in the remaining two positions.
(1) Note. This subclass provided for compounds containing the following ring which may have double bonds between its members.

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[List of Patents for class 548 subclass 256]    256Polycyclo heterocyclic ring system containing ring oxygen
 This subclass is indented under subclass 255.  Compounds containing a polycyclo heterocyclic ring system which has oxygen as a ring hetero atom.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 257]    257Polycyclo ring system having the triazole ring as one of the cyclos
 This subclass is indented under subclass 255.  Compounds wherein the triazole ring is a cyclo in a polycyclo ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 258]    258Ring nitrogen is shared by two of the cyclos
 This subclass is indented under subclass 257.  Compounds wherein a ring nitrogen is a member of two of the cyclos of the polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 259]    259Chalcogen attached directly to the polycyclo ring system by nonionic bonding
 This subclass is indented under subclass 257.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached directly to the polycyclo ring system by nonionic bonding.
  
[List of Patents for class 548 subclass 260]    260Chalcogen attached indirectly to the polycyclo ring system by nonionic bonding
 This subclass is indented under subclass 257.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the polycyclo ring system by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 261]    261The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 260.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
  
[List of Patents for class 548 subclass 262.2]    262.21,2,4-triazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds in which the five-membered hetero ring has nitrogens in the 1-, 2-, and 4- positions and carbons in the remaining two positions.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members:

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[List of Patents for class 548 subclass 262.4]    262.4Polycyclo ring system having the triazole ring as one of the cyclos
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is a cyclo in a polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 262.4

  
[List of Patents for class 548 subclass 262.6]    262.6Having -NH-C(=X)-NHH attached directly to the triazole ring by nonionic bonding (wherein X is chalcogen or =NH, and substitution may be made for hydrogen only)
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is bonded directly to a -NH-(C=X)-NHH group, wherein X is =NH or chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) and substitution may be made for hydrogen only.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 262.6

  
[List of Patents for class 548 subclass 262.8]    262.8Plural nitrogens attached to the triazole ring indirectly by acyclic nonionic bonding, two of which are bonded directly to the same acyclic carbon
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is attached indirectly by acyclic nonionic bonding to plural nitrogens, two of which are bonded directly to the same acyclic carbon.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 262.8

  
[List of Patents for class 548 subclass 263.2]    263.2Chalcogen bonded directly to ring carbon of the triazole ring
 This subclass is indented under subclass 262.2.  Compounds wherein ring carbon of the triazole ring is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
  
[List of Patents for class 548 subclass 263.4]    263.4Plural chalcogen bonded directly to ring carbons of the triazole ring
 This subclass is indented under subclass 263.2.  Compounds wherein at least two chalcogens are bonded directly to ring carbons of the triazole ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 263.4

  
[List of Patents for class 548 subclass 263.6]    263.6The 1- and 2- positions of the triazole ring are unsubstituted, or are alkyl or cycloalkyl substituted only
 This subclass is indented under subclass 263.4.  Compounds wherein the ring nitrogens in the 1- and 2- positions of the triazole ring are unsubstituted, or may be substituted by alkyl or cycloalkyl only.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 263.6

  
[List of Patents for class 548 subclass 263.8]    263.8Halogen or nitrogen attached directly to the triazole ring by nonionic bonding
 This subclass is indented under subclass 263.2.  Compounds wherein the triazole ring is attached directly to nitrogen or to halogen by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 263.8

  
[List of Patents for class 548 subclass 264.2]    264.2Carbon bonded directly to the chalcogen
 This subclass is indented under subclass 263.2.  Compounds wherein the chalcogen is bonded directly to an additional carbon.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 264.2

  
[List of Patents for class 548 subclass 264.4]    264.4Nitrogen or additional chalcogen attached indirectly to the chalcogen by acyclic nonionic bonding
 This subclass is indented under subclass 264.2.  Compounds wherein the chalcogen is attached indirectly to nitrogen or additional chalcogen by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 264.4

  
[List of Patents for class 548 subclass 264.6]    264.6Benzene ring bonded directly to the 4-position of the triazole ring
 This subclass is indented under subclass 263.2.  Compounds wherein the 4-position nitrogen of the triazole ring is bonded directly to a benzene ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 264.6

  
[List of Patents for class 548 subclass 264.8]    264.8Nitrogen attached directly to the triazole ring by nonionic bonding
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is attached directly to nitrogen by nonionic bonding.
  
[List of Patents for class 548 subclass 265.2]    265.2Plural nitrogens attached directly to the triazole ring by nonionic bonding
 This subclass is indented under subclass 264.8.  Compounds wherein at least two nitrogens are attached directly to the triazole ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 265.2

  
[List of Patents for class 548 subclass 265.4]    265.4Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen
 This subclass is indented under subclass 264.8.  Compounds wherein the nitrogen is bonded directly to a -C(=X) group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).0z
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 265.4

  
[List of Patents for class 548 subclass 265.6]    265.6The nitrogen is further bonded to hydrogen only
 This subclass is indented under subclass 264.8.  Compounds wherein the nitrogen is bonded additionally only to hydrogen.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 265.6

  
[List of Patents for class 548 subclass 265.8]    265.8Benzene ring bonded directly to ring nitrogen of the triazole ring, and directly to the acyclic carbon of a benzoyl or benzyl group
 This subclass is indented under subclass 262.2.  Compounds wherein ring nitrogen of the triazole ring is bonded directly to a benzene ring, which benzene ring is further bonded directly to the acyclic carbon of a substituted or unsubstituted benzoyl or benzyl group.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 265.8

  
[List of Patents for class 548 subclass 266.2]    266.2Additional unsaturated hetero ring attached directly or indirectly to the triazole ring by nonionic bonding
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is attached directly or indirectly to an additional unsaturated hetero ring by nonionic bonding.
(1) Note. The additional unsaturated hetero ring may itself be a 1,2,4- triazole ring.
(2) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 266.2

  
[List of Patents for class 548 subclass 266.4]    266.4The additional unsaturated hetero ring is one of the cyclos of a polycyclo ring system (except alkylenedioxyphenyl)
 This subclass is indented under subclass 266.2.  Compounds wherein a polycyclo ring system has the additional unsaturated hetero ring as one of its cyclos, except alkylenedioxyphenyl.
(1) Note. Compounds wherein the sole additional hetero ring present is alkylenedioxyphenyl are excluded from subclasses 266.2 and 266.4.
(2) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 266.4

  
[List of Patents for class 548 subclass 266.6]    266.6The additional unsaturated hetero ring and the triazole ring are attached to the same acyclic atom or to the same acyclic chain
 This subclass is indented under subclass 266.2.  Compounds wherein the triazole ring and the additional unsaturated hetero ring are attached to the same acyclic atom or to the same acyclic chain.
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 266.6

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[List of Patents for class 548 subclass 266.8]    266.8Cyano or -C(=X)-, wherein X is chalcogen, bonded directly to the triazole ring
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is bonded directly to cyano or to -C(=X)-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 266.8

  
[List of Patents for class 548 subclass 267.2]    267.2Nitrogen attached indirectly to the triazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is attached indirectly to nitrogen by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 267.2

  
[List of Patents for class 548 subclass 267.4]    267.4The nitrogen is double or triple bonded to carbon
 This subclass is indented under subclass 267.2.  Compounds wherein carbon is double or triple bonded to the nitrogen.
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 267.4

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[List of Patents for class 548 subclass 267.6]    267.6Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen
 This subclass is indented under subclass 267.2.  Compounds wherein the nitrogen is bonded directly to -C(=X)-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 267.6

  
[List of Patents for class 548 subclass 267.8]    267.8Chalcogen attached indirectly to the triaole ring by acyclic nonionic bonding
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is attached indirectly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 267.8

  
[List of Patents for class 548 subclass 268.2]    268.2The triazole ring and the chalcogen are bonded directly to the same acyclic carbon
 This subclass is indented under subclass 267.8.  Compounds wherein the chalcogen and the triazole ring are bonded directly to the same acyclic carbon.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 268.2

  
[List of Patents for class 548 subclass 268.4]    268.4Acyclic carbon bonded directly to triazole ring nitrogen is multiple bonded to an additional carbon
 This subclass is indented under subclass 267.8.  Compounds wherein the triazole ring is bonded directly to an acyclic carbon which is multiple bonded to an additional carbon.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 268.4

  
[List of Patents for class 548 subclass 268.6]    268.6Plural chalcogens attached indirectly to the triazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 267.8.  Compounds wherein the triazole ring is attached indirectly to plural chalcogens by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 268.6

  
[List of Patents for class 548 subclass 268.8]    268.8The triazole ring and a hetero ring whose ring members are carbon and chalcogen are bonded directly to the same acyclic carbon
 This subclass is indented under subclass 262.2.  Compounds wherein the same acyclic carbon is bonded directly to the triazole ring and to a hetero ring whose ring members are carbon and chalcogen (i.e., oxygen, sulfur, selenium, and tellurium).
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 268.8

  
[List of Patents for class 548 subclass 269.2]    269.2Processes for forming the triazole ring
 This subclass is indented under subclass 262.2.  Process which involve the synthesis of the 1,2,4-triazole ring.
  
[List of Patents for class 548 subclass 269.4]    269.4Benzene ring bonded directly to the triazole ring
 This subclass is indented under subclass 262.2.  Compounds wherein the triazole ring is bonded directly to a benzene ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 269.4

  
[List of Patents for class 548 subclass 300.1]    300.11,3-diazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds wherein nitrogen atoms occupy the 1 and 3 positions and carbon atoms occupy the remaining three positions of the five-membered hetero ring.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members:

Image 1 for class 548 subclass 300.1

(2) Note. This subclass contains, for example:

Image 2 for class 548 subclass 300.1

Image 3 for class 548 subclass 300.1

  
[List of Patents for class 548 subclass 300.4]    300.4Polycyclo ring system containing anthracene configured ring system having at least one double bond between ring members and having oxygen single bonded or any atom double bonded directly at the 9- or 10- positions (e.g., anthrone, anthraquinone, etc.)
 This subclass is indented under subclass 300.1.  Compounds having a polycyclo ring system which is or contains the anthracene ring configuration with at least one double bond between ring members and having oxygen single bonded or any atom double bonded directly to the ring system at the 9- and 10- positions (e.g., anthraquinones, etc.) or at the 9- or 10- positions (e.g., anthrones, etc.).
(1) Note. The anthracene configured ring system is numbered as follows:

Image 1 for class 548 subclass 300.4

(2) Note. This subclass contains, for example:

Image 2 for class 548 subclass 300.4

  
[List of Patents for class 548 subclass 300.7]    300.7Spiro
 This subclass is indented under subclass 300.1.  Compounds which contain a spiro ring system.
(1) Note. This subclass provides for compounds containing a 1,3-diazole ring and a spiro ring system whether or not the diazole ring is one of the cyclos in the spiro system.
(2) Note. This subclass contains, for example:

Image 1 for class 548 subclass 300.7

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[List of Patents for class 548 subclass 301.1]    301.1One of the two rings which form the spiro is part of a polycyclo ring system
 This subclass is indented under subclass 300.7.  Compounds wherein one of the two rings that form the spiro is a cyclo in a polycyclo ring system.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 301.1

  
[List of Patents for class 548 subclass 301.4]    301.4Acyclic chalcogen bonded directly at the 2- and at the 4- or 5- positions of the 1,3-diazole ring [e.g., cyclohexanespiro-5-(3-hydroxymethyl) hydantoin, etc.]
 This subclass is indented under subclass 300.7.  Compounds wherein the 1,3-diazole ring contains acyclic chalcogen bonded directly at the 2- and at the 4- or 5- positions thereof (e.g., 5- spirohydantoin, etc.).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 301.4

  
[List of Patents for class 548 subclass 301.7]    301.7Polycyclo ring system having the diazole ring as one the cyclos
 This subclass is indented under subclass 300.1.  Compounds wherein the 1,3-diazole ring is a cyclo in a polycyclo ring system.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 301.7

  
[List of Patents for class 548 subclass 302.1]    302.1Tricyclo ring system having the diazole ring as one the cyclos
 This subclass is indented under subclass 301.7.  Compounds in which the polycyclo ring system consists of exactly three rings.
  
[List of Patents for class 548 subclass 302.4]    302.4The 1,3-diazole shares ring nitrogen with a five-membered ring having no additional hetero atoms (e.g., imidazo [2,1-a] isoindole, etc.)
 This subclass is indented under subclass 302.1.  Compounds in which the tricyclo ring system contains a five-membered ring having one nitrogen and four carbons which nitrogen is shared with the 1,3-diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 302.4

  
[List of Patents for class 548 subclass 302.7]    302.7Bicyclo ring system having the diazole ring as one of the cyclos
 This subclass is indented under subclass 301.7.  Compounds in which the polycyclo ring system consists of exactly two rings.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 302.7

  
[List of Patents for class 548 subclass 303.1]    303.1At least three ring hetero atoms in the bicyclo ring system (e.g., furo- imidazole, (1,2-a) imidazole, pyrazo (1,2-a) imidazolidine, etc.)
 This subclass is indented under subclass 302.7.  Compounds wherein the bicyclo ring system contains at least one ring hetero atom in addition to the two ring nitrogens of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 303.1

  
[List of Patents for class 548 subclass 303.4]    303.4Four ring nitrogens in the bicyclo ring system (e.g., glycolurile, etc.)
 This subclass is indented under subclass 303.1.  Compounds in which the bicyclo ring system contains two ring nitrogens in addition to the two ring nitrogens of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 303.4

  
[List of Patents for class 548 subclass 303.7]    303.7The other cyclo is a five-membered hetero ring having one sulfur and four carbons (e.g., cis-tetrahydro-2-oxothieno [3,4-d]-imidazoline 4-valeric acid or biotin, etc.)
 This subclass is indented under subclass 303.1.  Compounds in which the bicyclo ring system consists of a five-membered ring having one sulfur and four carbons in addition to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 303.7

  
[List of Patents for class 548 subclass 304.1]    304.1Having -C(=O)-HN-, wherein substitution may be made for H, attached directly or indirectly to the bicyclo ring system by acyclic nonionic bonding (e.g., biotin amide, biotinylglycine, etc.)
 This subclass is indented under subclass 303.7.  Compounds wherein carboxamide (i.e.,--) is attached directly or indirectly to the bicyclo ring system by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 304.1

Image 2 for class 548 subclass 304.1

  
[List of Patents for class 548 subclass 304.4]    304.4The other ring is a benzene ring
 This subclass is indented under subclass 302.7.  Compounds in which the bicyclo ring system contains a benzene ring in addition to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 304.4

Image 2 for class 548 subclass 304.4

Image 3 for class 548 subclass 304.4

SEE OR SEARCH THIS CLASS, SUBCLASS:

302.7,for compounds wherein the benzene ring is partially or completely hydrogenated.
  
[List of Patents for class 548 subclass 304.7]    304.7Additional hetero ring attached directly or indirectly to the diazole ring by nonionic bonding (e.g., methyl( 5-[2-(2-thienyl)-1,3-dioxolan -2-yl]-1H-benzimidazol-2-yl) carbamate, etc.)
 This subclass is indented under subclass 304.4.  Compounds wherein an additional hetero ring is attached directly or indirectly to the 1,3-diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 304.7

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[List of Patents for class 548 subclass 305.1]    305.1The additional hetero ring is a cyclo in a polycyclo ring system (e.g., benzofuranyl-benzimidazole, etc.)
 This subclass is indented under subclass 304.7.  Compounds wherein the additional hetero ring is one of the cyclos in a polycyclo ring system.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 305.1

  
[List of Patents for class 548 subclass 305.4]    305.4The additional polycyclo ring system contains a 1,3-diazole [e.g., bis (benzimidazol-2-yl) stilene, etc.]
 This subclass is indented under subclass 305.1.  Compounds wherein the additional polycyclo ring system contains a 1,3- diazole ring as one of the cyclos.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 305.4

Image 2 for class 548 subclass 305.4

  
[List of Patents for class 548 subclass 305.7]    305.7The polycyclo ring systems are bonded to the same acyclic carbon atom or to the same acyclic carbon chain (e.g., di-[2-benzimidazolyl)-methane; di-[benzimidazyl-(2)]-monohydroxyethylene, etc.)
 This subclass is indented under subclass 305.4.  Compounds containing an acyclic carbon atom or an acyclic carbon chain linkage between the polycyclo ring systems.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 305.7

  
[List of Patents for class 548 subclass 306.1]    306.1The additional hetero ring contains nitrogen as the only ring hetero atom [e.g., 2-(2-imidazolin-2-yl)-benzimidazole; 1-p-chlorophenyl-3- pyrrolidin-1- yl-propyl benzimidazolone, etc.]
 This subclass is indented under subclass 304.7.  Compounds wherein nitrogen is the only ring hetero atom in the additional hetero ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 306.1

Image 2 for class 548 subclass 306.1

  
[List of Patents for class 548 subclass 306.4]    306.4Chalcogen bonded directly to ring carbon of the diazole ring
 This subclass is indented under subclass 304.4.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 306.4

  
[List of Patents for class 548 subclass 306.7]    306.7Plural chalcogens attached directly to the diazole ring by nonionic bonding
 This subclass is indented under subclass 306.4.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are attached directly to carbon only or to carbon and nitrogen of the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 306.7

  
[List of Patents for class 548 subclass 307.1]    307.1The chalcogen is sulfur
 This subclass is indented under subclass 306.4.  Compounds wherein sulfur is the chalcogen which is bonded directly to ring carbon of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 307.1

  
[List of Patents for class 548 subclass 307.4]    307.4Nitrogen attached directly to the diazole ring by nonionic bonding
 This subclass is indented under subclass 304.4.  Compounds wherein nitrogen is attached directly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 307.4

  
[List of Patents for class 548 subclass 307.7]    307.7Chalcogen attached directly to diazole ring nitrogen by nonionic bonding
 This subclass is indented under subclass 307.4.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached directly to ring nitrogen of the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 307.7

  
[List of Patents for class 548 subclass 308.1]    308.1Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring
 This subclass is indented under subclass 307.4.  Compounds having a - group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), bonded directly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 308.1

  
[List of Patents for class 548 subclass 308.4]    308.4Acyclic nitrogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 308.1.  Compounds wherein an acyclic nitrogen is bonded directly to the - group.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 308.4

  
[List of Patents for class 548 subclass 308.7]    308.7Having -C(=X)-X-, wherein the Xs are the same or diverse chalcogens, attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 307.4.  Compounds containing a -X group attached indirectly to the diazole ring by acyclic nonionic bonding, wherein X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 308.7

  
[List of Patents for class 548 subclass 309.1]    309.1Chalcogen bonded directly to the benzene ring of the bicyclo ring system
 This subclass is indented under subclass 308.7.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the benzene ring of the bicyclo ring system.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 309.1

  
[List of Patents for class 548 subclass 309.4]    309.4Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring
 This subclass is indented under subclass 304.4.  Compounds wherein a - group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 309.4

  
[List of Patents for class 548 subclass 309.7]    309.7Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 304.4.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 309.7

Image 2 for class 548 subclass 309.7

Image 3 for class 548 subclass 309.7

  
[List of Patents for class 548 subclass 310.1]    310.1Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 304.4.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 310.1

Image 2 for class 548 subclass 310.1

  
[List of Patents for class 548 subclass 310.4]    310.4Halogen attached directly or indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 304.4.  Compounds wherein halogen (i.e., F, Cl, Br, I, or At) is attached directly or indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 310.4

  
[List of Patents for class 548 subclass 310.7]    310.7Benzene ring bonded directly at the 2- position of the diazole ring
 This subclass is indented under subclass 304.4.  Compounds wherein a benzene ring is bonded directly to ring carbon at the 2-position of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 310.7

  
[List of Patents for class 548 subclass 311.1]    311.1Additional hetero ring attached directly or indirectly to the diazole ring by nonionic bonding (e.g., 1,3-dioxolan-2-yl methyl-imidazole, etc.)
 This subclass is indented under subclass 300.1.  Compounds wherein an additional hetero ring is attached directly or indirectly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 311.1

Image 2 for class 548 subclass 311.1

  
[List of Patents for class 548 subclass 311.4]    311.4The additional hetero ring is a cyclo in a polycyclo ring system [e.g., 2-(1-isothiochromanyl)-2-imidazoline hydrochloride, etc.]
 This subclass is indented under subclass 311.1.  Compounds wherein the additional hetero ring is one of the cyclos in a polycyclo ring system.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 311.4

Image 2 for class 548 subclass 311.4

  
[List of Patents for class 548 subclass 311.7]    311.7At least two ring hetero atoms in the polycyclo ring system
 This subclass is indented under subclass 311.4.  Compounds wherein the polycyclo ring system contains at least two ring hetero atoms.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 311.7

Image 2 for class 548 subclass 311.7

  
[List of Patents for class 548 subclass 312.1]    312.1The additional polycyclo ring system is a bicyclo ring system having nitrogen as the only ring hetero atom [e.g., 5-(indolyl-3-methylene)- hydantoin, etc.]
 This subclass is indented under subclass 311.4.  Compounds wherein the additional polycyclo ring system contains nitrogen as the only ring hetero atom and consists of exactly two cyclos.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 312.1

  
[List of Patents for class 548 subclass 312.4]    312.4The additional hetero ring is a diazole ring (including hydrogenated)
 This subclass is indented under subclass 311.1.  Compounds wherein the additional hetero ring is also a five-membered hetero ring having two ring nitrogens and the remaining three positions are ring carbons.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 312.4

Image 2 for class 548 subclass 312.4

  
[List of Patents for class 548 subclass 312.7]    312.7Plural 1,3-diazoles
 This subclass is indented under subclass 312.4.  Compounds wherein the additional hetero ring is a diazole ring with nitrogen atoms occupying the 1 and 3 positions (i.e., plural 1,3-diazoles, and hydrogenated forms thereof).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 312.7

  
[List of Patents for class 548 subclass 313.1]    313.1Additional diverse hetero ring attached directly or indirectly to a diazole ring by nonionic bonding
 This subclass is indented under subclass 312.7.  Compounds containing an additional hetero ring other than a diazole ring which is attached directly or indirectly to a 1,3- diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 313.1

  
[List of Patents for class 548 subclass 313.4]    313.4The diazole rings are bonded directly to each other
 This subclass is indented under subclass 312.7.  Compounds wherein the 1,3-diazole rings are bonded directly to each other.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 313.4

  
[List of Patents for class 548 subclass 313.7]    313.7Ring nitrogens of two diazole rings attached directly to the same atom or chain, which chain may include a ring, by nonionic bonding
 This subclass is indented under subclass 312.7.  Compounds wherein a ring nitrogen of each of the two 1,3-diazole rings is attached directly to the same atom or chain, which chain may include a ring, by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 313.7

  
[List of Patents for class 548 subclass 314.1]    314.1Acyclic chalcogen bonded directly at the 2- and at the 4- or 5- positions of each of the two diazole rings (e.g., N, N methylene bis -hydantoin, etc.)
 This subclass is indented under subclass 313.7.  Compounds wherein acyclic chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly at the 2- and at the 4- or 5- positions of each of the two diazole rings.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 314.1

  
[List of Patents for class 548 subclass 314.4]    314.4Two diazole rings are bonded directly to the same carbon atom or carbon chain, which chain may include a ring
 This subclass is indented under subclass 312.7.  Compounds wherein two 1,3-diazole rings are bonded directly to the same carbon atom or to a carbon chain, which chain may include a ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 314.4

Image 2 for class 548 subclass 314.4

  
[List of Patents for class 548 subclass 314.7]    314.7The additional hetero ring contains nitrogen as the only ring hetero atom [e.g., N-(cyclopentylcarbonyl-L-histidyl)-pyrrolidine, etc.]
 This subclass is indented under subclass 311.1.  Compounds wherein nitrogen is the only ring hetero atom in the additional hetero ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 314.7

Image 2 for class 548 subclass 314.7

  
[List of Patents for class 548 subclass 315.1]    315.1The additional hetero ring contains sulfur as the only ring hetero atom [e.g., 5-(2-thienyl) hydantoin, etc.]
 This subclass is indented under subclass 311.1.  Compounds wherein sulfur is the only ring hetero atom in the additional hetero ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 315.1

  
[List of Patents for class 548 subclass 315.4]    315.4The additional hetero ring is a five-membered ring having oxygen and four carbons (e.g., pilocarpine; 2-[5-(3,4-dimethoxyphenyl)-2-furyl]imidazole hydrochloride, etc.)
 This subclass is indented under subclass 311.1.  Compounds wherein a five- membered ring having one oxygen and four carbons is the additional hetero ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 315.4

Image 2 for class 548 subclass 315.4

  
[List of Patents for class 548 subclass 315.7]    315.7Acyclic chalcogen bonded directly to ring carbon of the 1,3-diazole ring
 This subclass is indented under subclass 315.4.  Compounds wherein acyclic chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 315.7

  
[List of Patents for class 548 subclass 316.1]    316.1Plural acyclic chalcogens bonded directly at the 2- and at the 4- or 5- positions of the 1,3-diazole ring [e.g., N-(5-nitro-2-furfuryliden)-1- amino-hydantoin, etc.]
 This subclass is indented under subclass 315.7.  Compounds wherein plural acyclic chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly at the 2- and at the 4- or 5- positions of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 316.1

  
[List of Patents for class 548 subclass 316.4]    316.4Chalcogen bonded directly to ring carbon of the diazole ring (e.g., N-vinyl-N, Nethylene urea, etc.)
 This subclass is indented under subclass 300.1.  Compounds wherein chalcogen, (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 316.4

  
[List of Patents for class 548 subclass 316.7]    316.7Additional chalcogen attached directly to ring nitrogen of the diazole ring by nonionic bonding
 This subclass is indented under subclass 316.4.  Compounds containing an additional chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) which is attached directly to ring nitrogen of the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 316.7

  
[List of Patents for class 548 subclass 317.1]    317.1Plural chalcogens bonded directly to ring carbons of the diazole ring
 This subclass is indented under subclass 316.4.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 317.1

(2) Note. Included in this subclass are compounds which have been commonly called hydantoins (i.e., 2,4-imidazolidinedione).
  
[List of Patents for class 548 subclass 317.5]    317.5Three chalcogens bonded directly to ring carbons of the diazole ring
 This subclass is indented under subclass 317.1.  Compounds wherein three chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 317.5

(2) Note. Included in this subclass are compounds which have been commonly called parabanic acids.
  
[List of Patents for class 548 subclass 318.1]    318.1Nitrogen attached directly to the diazole ring by nonionic bonding [e.g., (2,5-dioxo-4-imidazolidinyl)urea or allantoin, etc.]
 This subclass is indented under subclass 317.1.  Compounds wherein nitrogen is attached directly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 318.1

Image 2 for class 548 subclass 318.1

  
[List of Patents for class 548 subclass 318.5]    318.5Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring
 This subclass is indented under subclass 317.1.  Compounds wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 318.5

  
[List of Patents for class 548 subclass 319.1]    319.1Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 317.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 319.1

  
[List of Patents for class 548 subclass 319.5]    319.5The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 319.1.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 319.5

  
[List of Patents for class 548 subclass 320.1]    320.1Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 317.1.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 320.1

  
[List of Patents for class 548 subclass 320.5]    320.5Halogen attached directly or indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 317.1.  Compounds wherein halogen is attached directly or indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 320.5

  
[List of Patents for class 548 subclass 321.1]    321.1Benzene ring bonded directly to the diazole ring
 This subclass is indented under subclass 317.1.  Compounds wherein the diazole ring is bonded directly to a benzene ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 321.1

  
[List of Patents for class 548 subclass 321.5]    321.5Nitrogen attached directly to the diazole ring by nonionic bonding
 This subclass is indented under subclass 316.4.  Compounds wherein nitrogen is attached directly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 321.5

  
[List of Patents for class 548 subclass 322.1]    322.1The nitrogen is attached directly to ring nitrogen of the diazole ring by nonionic bonding (e.g., dinitroethylene urea, etc.)
 This subclass is indented under subclass 321.5.  Compounds wherein the nitrogen is attached directly to one of the nitrogens of the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 322.1

  
[List of Patents for class 548 subclass 322.5]    322.5Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring
 This subclass is indented under subclass 316.4.  Compounds wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 322.5

  
[List of Patents for class 548 subclass 323.1]    323.1Acyclic nitrogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 322.5.  Compounds wherein the group which is bonded directly to the diazole ring is additionally bonded directly to acyclic nitrogen.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 323.1

Image 2 for class 548 subclass 323.1

  
[List of Patents for class 548 subclass 323.5]    323.5Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 316.4.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 323.5

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[List of Patents for class 548 subclass 324.1]    324.1The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 323.5.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 324.1

  
[List of Patents for class 548 subclass 324.5]    324.5Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 316.4.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 324.5

  
[List of Patents for class 548 subclass 325.1]    325.1The chalcogen is sulfur or selenium (e.g., 2-mercaptoimidazoline, ethylenethiourea, etc.)
 This subclass is indented under subclass 316.4.  Compounds wherein the chalcogen which is bonded directly to diazole ring carbon is sulfur or selenium.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 325.1

  
[List of Patents for class 548 subclass 325.5]    325.5Benzene ring bonded directly to the diazole ring
 This subclass is indented under subclass 316.4.  Compounds wherein the diazole ring is bonded directly to a benzene ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 325.5

  
[List of Patents for class 548 subclass 326.1]    326.1The diazole ring is further unsubstituted (e.g., cyclic ethylene urea, etc.)
 This subclass is indented under subclass 316.4.  Compounds wherein the diazole ring is not substituted except for the chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 326.1

SEE OR SEARCH THIS CLASS, SUBCLASS:

316.4,for compounds containing alkyl substituted cyclic ethylene urea.
  
[List of Patents for class 548 subclass 326.5]    326.5Nitrogen attached directly to the diazole ring by nonionic bonding
 This subclass is indented under subclass 300.1.  Compounds wherein nitrogen is attached directly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 326.5

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[List of Patents for class 548 subclass 327.1]    327.1The nitrogen is part of a nitro group (i.e., -NO ), (e.g., 5-nitroimidazole, etc.)
 This subclass is indented under subclass 326.5.  Compounds wherein the nitrogen is part of a nitro group (i.e., -NO2).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 327.1

  
[List of Patents for class 548 subclass 327.5]    327.5The nitro group is bonded directly at the 2-position of the diazole ring
 This subclass is indented under subclass 327.1.  Compounds wherein the nitro group (i.e., -NO2) is bonded directly to the ring carbon in the 2- position of the diazole ring, i.e., the ring carbon between the two ring nitrogens.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 327.5

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[List of Patents for class 548 subclass 328.1]    328.1Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring
 This subclass is indented under subclass 327.1.  Compounds which contain a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 328.1

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[List of Patents for class 548 subclass 328.5]    328.5Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 327.1.  Compounds which contain nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 328.5

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[List of Patents for class 548 subclass 329.1]    329.1The nitrogen is multiply bonded to carbon
 This subclass is indented under subclass 328.5.  Compounds wherein the nitrogen is multiply bonded to carbon.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 329.1

  
[List of Patents for class 548 subclass 329.5]    329.5Benzene ring bonded directly at the 2-position of the diazole ring
 This subclass is indented under subclass 327.1.  Compounds wherein a benzene ring is bonded directly to the ring carbon in the 2- position of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 329.5

  
[List of Patents for class 548 subclass 330.1]    330.1Chalcogen, not part of a nitro group, attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 327.1.  Compounds wherein an additional chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), which is not part of the nitro group, is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 330.1

  
[List of Patents for class 548 subclass 330.5]    330.5The chalcogen is sulfur
 This subclass is indented under subclass 330.1.  Compounds wherein sulfur is the chalcogen that is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 330.5

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[List of Patents for class 548 subclass 331.1]    331.1Chalcogen or the nitrogen attached directly to diazole ring nitrogen by nonionic bonding
 This subclass is indented under subclass 326.5.  Compounds wherein the nitrogen or chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached directly to a diazole ring nitrogen by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 331.1

Image 2 for class 548 subclass 331.1

  
[List of Patents for class 548 subclass 331.5]    331.5The nitrogen is bonded directly at the 2-position of the diazole ring
 This subclass is indented under subclass 326.5.  Compounds wherein the nitrogen is bonded directly to the ring carbon in the 2- position of the diazole ring, i.e., the ring carbon between the two ring nitrogens.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 331.5

Image 2 for class 548 subclass 331.5

  
[List of Patents for class 548 subclass 332.1]    332.1Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring
 This subclass is indented under subclass 331.5.  Compounds which contain a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 332.1

  
[List of Patents for class 548 subclass 332.5]    332.5Chalcogen, additional nitrogen, or -C(=X)-, wherein X is chalcogen or nitrogen, attached directly to the nitrogen by nonionic bonding
 This subclass is indented under subclass 331.5.  Compounds wherein the nitrogen is attached directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), an additional nitrogen or a group, in which X is chalcogen or nitrogen, by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 332.5

  
[List of Patents for class 548 subclass 333.1]    333.1Benzene ring bonded directly to the nitrogen
 This subclass is indented under subclass 331.5.  Compounds wherein the nitrogen is bonded directly to a benzene ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 333.1

Image 2 for class 548 subclass 333.1

  
[List of Patents for class 548 subclass 333.5]    333.5Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring
 Compounds under 300.1 wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 333.5

  
[List of Patents for class 548 subclass 334.1]    334.1The -C(=X)- is bonded directly to ring nitrogen of the diazole ring
 This subclass is indented under subclass 333.5.  Compounds in which the group is bonded directly to a diazole ring nitrogen by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 334.1

  
[List of Patents for class 548 subclass 334.5]    334.5The -C(=X)- is part of a -C(=X)X- group, wherein the Xs are the same or diverse chalcogens (e.g., imidazole- 4,5-dicarboxylic acid, etc.)
 This subclass is indented under subclass 333.5.  Compounds in which the group is part of a X-group, wherein the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 334.5

  
[List of Patents for class 548 subclass 335.1]    335.1Two double bonds between ring members of the diazole ring (i.e., imidazole)
 This subclass is indented under subclass 300.1.  Compounds wherein the 1,3-diazole ring contains two double bonds between its ring members.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 335.1

(2) Note. Compounds within this subclass are referred to as imidazoles, glyoxalines, imineazoles, imideazoles, iminazoles, pyrro[b]monazoles, or 1,3-diaza-2,4- cyclopentadienes.
  
[List of Patents for class 548 subclass 335.5]    335.5Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 335.1.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 335.5

  
[List of Patents for class 548 subclass 336.1]    336.1The nitrogen is multiply bonded to carbon
 This subclass is indented under subclass 335.5.  Compounds wherein carbon is multiply bonded to the nitrogen.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 336.1

Image 2 for class 548 subclass 336.1

  
[List of Patents for class 548 subclass 336.5]    336.5Having a -C=N group bonded directly to the nitrogen (e.g., N-cyano-N- methyl-N~-{2-(4-methyl-5-imidazolyl)-methylthio]-ethyl}guanidine, etc.)
 This subclass is indented under subclass 336.1.  Compounds wherein the nitrogen is bonded directly to a -CN group.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 336.5

  
[List of Patents for class 548 subclass 337.1]    337.1The nitrogen is part of a -C=N group which is bonded directly to the diazole ring (e.g., 4,5-dicyanoimidazole, etc.)
 This subclass is indented under subclass 336.1.  Compounds containing a -CN group bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 337.1

  
[List of Patents for class 548 subclass 338.1]    338.1Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen
 This subclass is indented under subclass 335.5.  Compounds wherein the nitrogen is bonded directly to a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 338.1

Image 2 for class 548 subclass 338.1

  
[List of Patents for class 548 subclass 338.5]    338.5The chalcogen is sulfur or sulfur attached indirectly to the -C(=X)- group by acyclic nonionic bonding
 This subclass is indented under subclass 338.1.  Compounds in which sulfur is attached indirectly to the group by acyclic nonionic bonding or the chalcogen of the group is sulfur.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 338.5

  
[List of Patents for class 548 subclass 339.1]    339.1The nitrogen and -C(=X)X-, wherein Xs are the same or diverse chalcogens, are bonded directly to the same acyclic carbon atom (e.g., -amino-4(5)- imidazole propionic acid or histidine, etc.)
 This subclass is indented under subclass 335.5.  Compounds wherein a X- group, in which the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium), and the nitrogen are bonded directly to the same acyclic carbon atom.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 339.1

  
[List of Patents for class 548 subclass 339.5]    339.5Halogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 339.1.  Compounds in which halogen (i.e., F, Cl, Br, I, or At) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 339.5

  
[List of Patents for class 548 subclass 340.1]    340.1Chalcogen attached indirectly to the nitrogen by acyclic nonionic bonding
 This subclass is indented under subclass 335.5.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the nitrogen by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 340.1

Image 2 for class 548 subclass 340.1

  
[List of Patents for class 548 subclass 341.1]    341.1Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 335.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 341.1

  
[List of Patents for class 548 subclass 341.5]    341.5The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 341.1.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 341.5

Image 2 for class 548 subclass 341.5

  
[List of Patents for class 548 subclass 342.1]    342.1The chalcogen is sulfur
 This subclass is indented under subclass 341.1.  Compounds wherein sulfur is the chalcogen.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 342.1

Image 2 for class 548 subclass 342.1

  
[List of Patents for class 548 subclass 342.5]    342.5Benzene ring or halogen attached directly to the diazole ring by nonionic bonding (e.g., 1-hydroxyethyl-4,5-diphenyl-imidazole; 1-ethyloxymethyl-2, 4,5-trichloro-imidazole, etc.)
 This subclass is indented under subclass 341.1.  Compounds wherein halogen (i.e., F, Cl, Br, I, or At) or benzene ring is attached directly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 342.5

Image 2 for class 548 subclass 342.5

  
[List of Patents for class 548 subclass 343.1]    343.1Halogen attached directly or indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 335.1.  Compounds wherein halogen (i.e., F, Cl, Br, I, or At) is attached directly or indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 343.1

  
[List of Patents for class 548 subclass 343.5]    343.5Benzene ring bonded directly to the diazole ring
 This subclass is indented under subclass 335.1.  Compounds wherein the diazole ring is bonded directly to a benzene ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 343.5

  
[List of Patents for class 548 subclass 344.1]    344.1The diazole ring and two benzene rings are bonded directly to the same acyclic carbon
 This subclass is indented under subclass 335.1.  Compounds wherein two benzene rings and the diazole ring are bonded directly to the same acyclic carbon.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 344.1

Image 2 for class 548 subclass 344.1

  
[List of Patents for class 548 subclass 345.1]    345.1Cycloaliphatic ring bonded directly to the diazole ring
 This subclass is indented under subclass 335.1.  Compounds wherein the diazole ring is bonded directly to a cycloaliphatic ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 345.1

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[List of Patents for class 548 subclass 346.1]    346.1Benzene ring attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 335.1.  Compounds wherein a benzene ring is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 346.1

  
[List of Patents for class 548 subclass 347.1]    347.1One double bond between ring members of the diazole ring (i.e., imidazoline)
 This subclass is indented under subclass 300.1.  Compounds wherein the 1,3-diazole contains one double bond between its ring members.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 347.1

Image 2 for class 548 subclass 347.1

(2) Note. The 1,3-diazoles provided for in this subclass are generally referred to as 2- imidazolines, 4,5-dihydroimidazoles, or dihydroglyoxalines.
  
[List of Patents for class 548 subclass 348.1]    348.1Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 347.1.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 348.1

Image 2 for class 548 subclass 348.1

  
[List of Patents for class 548 subclass 349.1]    349.1Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 348.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 349.1

Image 2 for class 548 subclass 349.1

  
[List of Patents for class 548 subclass 350.1]    350.1Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding (e.g., hydroxyalkyl glyoxalidine, etc.)
 This subclass is indented under subclass 347.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 350.1

  
[List of Patents for class 548 subclass 351.1]    351.1The chalcogen is sulfur
 This subclass is indented under subclass 350.1.  Compounds wherein sulfur is the chalcogen.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 351.1

  
[List of Patents for class 548 subclass 352.1]    352.1The chalcogen, X, is in a -C(=X)X- group, wherein Xs are the same or diverse chalcogens
 This subclass is indented under subclass 350.1.  Compounds in which the chalcogen, X, is in a X- group, wherein X"s are the same or diverse chalcogens.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 352.1

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[List of Patents for class 548 subclass 353.1]    353.1Benzene ring bonded directly to the chalcogen [e.g., 2-(3- aminophenoxymethyl)imidazoline, etc.]
 This subclass is indented under subclass 350.1.  Compounds in which the chalcogen is bonded directly to a benzene ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 353.1

  
[List of Patents for class 548 subclass 354.1]    354.1Benzene ring bonded directly to the diazole ring
 This subclass is indented under subclass 347.1.  Compounds wherein the diazole ring is bonded directly to a benzene ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 354.1

  
[List of Patents for class 548 subclass 355.1]    355.1Benzene ring and the diazole ring are bonded to the same acyclic carbon atom or carbon chain
 This subclass is indented under subclass 347.1.  Compounds wherein the diazole ring and a benzene ring are bonded to the same acyclic carbon atom or carbon chain.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 355.1

  
[List of Patents for class 548 subclass 356.1]    356.11,2-diazoles (including hydrogenated)
 This subclass is indented under subclass 100.  Compounds wherein nitrogen atoms occupy the 1 and 2 positions and carbon atoms occupy the remaining three positions of the five-membered hetero ring.
(1) Note. This subclass provides for compounds containing the following ring which may have double bonds between its members.

Image 1 for class 548 subclass 356.1

(2) Note. This subclass contains, for example:

Image 2 for class 548 subclass 356.1

(3) Note. Compounds within this subclass are generally referred to as tetrahydropyrazoles or pyrazolidines.
  
[List of Patents for class 548 subclass 356.5]    356.5Polycyclo ring system containing anthracene configured ring system having at least one double bond between ring members and having oxygen single bonded or any atom double bonded directly at the 9- or 10- positions (e.g., anthrone, anthraquinone, etc.)
 This subclass is indented under subclass 356.1.  Compounds having a polycyclo ring system which is or contains the anthracene ring configuration with at least one double bond between ring members and having oxygen single bonded or any atom double bonded directly to the ring system at the 9- and 10- positions (e.g., anthraquinones, etc.) or at the 9- or 10- positions (e.g., anthrones, etc.).
(1) Note. The anthracene configured ring system is numbered as follows:

Image 1 for class 548 subclass 356.5

(2) Note. This subclass contains, for example:

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[List of Patents for class 548 subclass 357.1]    357.1Additional polycyclo ring system having at least three cyclos attached directly or indirectly to the anthrone or anthraquinone by nonionic bonding
 This subclass is indented under subclass 356.5.  Compounds wherein the anthrone or the anthraquinone is attached directly or indirectly to an additional polycyclo ring system having at least three cyclos by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 357.1

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[List of Patents for class 548 subclass 357.5]    357.5Spiro
 This subclass is indented under subclass 356.1.  Compounds which are or contain a spiro ring system.
(1) Note. This subclass provides for compounds containing a 1,2-diazole ring and a spiro ring system whether or not the diazole ring is one of the cyclos in the spiro system.
(2) Note. This subclass contains, for example:

Image 1 for class 548 subclass 357.5

  
[List of Patents for class 548 subclass 358.1]    358.1Polycyclo ring system having the diazole ring as one of the cyclos
 This subclass is indented under subclass 356.1.  Compounds wherein the 1,2-diazole ring is a cyclo in a polycyclo ring system.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 358.1

  
[List of Patents for class 548 subclass 358.5]    358.5Tetracyclo ring system having the diazole ring as one of the cyclos
 This subclass is indented under subclass 358.1.  Compounds in which the polycyclo ring system consists of exactly four rings.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 358.5

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[List of Patents for class 548 subclass 359.1]    359.1Tricyclo ring system having the diazole ring as one of the cyclos
 This subclass is indented under subclass 358.1.  Compounds in which the polycyclo ring system consists of exactly three rings.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 359.1

  
[List of Patents for class 548 subclass 359.5]    359.5At least three ring hetero atoms in the tricyclo ring system
 This subclass is indented under subclass 359.1.  Compounds wherein the tricyclo ring system contains at least one ring hetero atom in addition to the two ring nitrogens of the diazole ring.
(1) Note. This subclass contains, for example:

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[List of Patents for class 548 subclass 360.1]    360.1Bicyclo ring system having the diazole ring as one of the cyclos (e.g., 2, 4-dichloro-5-nitrophenyl-4,5,6,7-tetrahydro-2H-indazole, etc.)
 This subclass is indented under subclass 358.1.  Compounds in which the polycyclo ring system consists of exactly two rings.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 360.1

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[List of Patents for class 548 subclass 360.5]    360.5At least three ring hetero atoms in the bicyclo ring system
 This subclass is indented under subclass 360.1.  Compounds wherein the bicyclo ring system contains at least one ring hetero atom in addition to the two ring nitrogens of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 360.5

  
[List of Patents for class 548 subclass 361.1]    361.1The other ring is a benzene ring
 This subclass is indented under subclass 360.1.  Compounds in which the bicyclo ring system consists of a benzene ring and the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 361.1

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SEE OR SEARCH THIS CLASS, SUBCLASS:

360.1+,for compounds wherein the benzene ring is partially or completely hydrogenated.
  
[List of Patents for class 548 subclass 361.5]    361.5Chalcogen bonded directly to ring carbon of the diazole ring
 This subclass is indented under subclass 361.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 361.5

  
[List of Patents for class 548 subclass 362.1]    362.1Nitrogen attached directly to the diazole ring by nonionic bonding
 This subclass is indented under subclass 361.1.  Compounds wherein nitrogen is attached directly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

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[List of Patents for class 548 subclass 362.5]    362.5Having chalcogen or nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 361.1.  Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 362.5

  
[List of Patents for class 548 subclass 363.1]    363.1Chalcogen bonded directly to ring carbon of the diazole ring
 This subclass is indented under subclass 360.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 363.1

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[List of Patents for class 548 subclass 364.1]    364.1Additional hetero ring attached directly or indirectly to the diazole ring by nonionic bonding
 This subclass is indented under subclass 356.1.  Compounds containing an additional hetero ring which is attached directly or indirectly to the five-membered hetero ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 364.1

  
[List of Patents for class 548 subclass 364.4]    364.4The additional hetero ring is a cyclo in a polycyclo ring system
 This subclass is indented under subclass 364.1.  Compounds wherein the additional hetero ring is one of the cyclos in a polycyclo ring system.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 364.4

  
[List of Patents for class 548 subclass 364.7]    364.7The polycyclo ring system contains nitrogen as the only ring hetero atom
 This subclass is indented under subclass 364.4.  Compounds containing nitrogen as the only ring hetero atom in the polycyclo ring system.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 364.7

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[List of Patents for class 548 subclass 365.1]    365.1Plural 1,2-diazoles (including hydrogenated)
 This subclass is indented under subclass 364.1.  Compounds wherein the additional hetero ring is a five membered hetero ring having two ring nitrogens occupying the 1 and 2 positions (i.e., plural 1,2-diazoles and hydrogenated forms thereof).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 365.1

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[List of Patents for class 548 subclass 365.4]    365.4Two diazole rings are bonded directly to each other, to the same acyclic carbon atom or to the same acyclic carbon chain
 This subclass is indented under subclass 365.1.  Compounds wherein two diazole rings are bonded directly to the same acyclic carbon atom, to the same acyclic carbon chain or are bonded directly to each other.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 365.4

  
[List of Patents for class 548 subclass 365.7]    365.7The additional hetero ring contains chalcogen as the only ring hetero atom
 This subclass is indented under subclass 364.1.  Compounds containing chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) as the only ring hetero atom in the additional hetero ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 365.7

  
[List of Patents for class 548 subclass 366.1]    366.1Chalcogen bonded directly to ring carbon of the diazole ring
 This subclass is indented under subclass 356.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 366.1

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[List of Patents for class 548 subclass 366.4]    366.4Plural chalcogens bonded directly to diazole ring carbons
 This subclass is indented under subclass 366.1.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 366.4

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[List of Patents for class 548 subclass 366.7]    366.7Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 366.4.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 366.7

  
[List of Patents for class 548 subclass 367.1]    367.1Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 366.4.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 367.1

  
[List of Patents for class 548 subclass 367.4]    367.4Nitrogen attached directly to the diazole ring by nonionic bonding
 This subclass is indented under subclass 366.1.  Compounds wherein nitrogen is attached directly to the diazole ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 367.4

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[List of Patents for class 548 subclass 367.7]    367.7The nitrogen is multiply bonded to acyclic carbon or is bonded to nitrogen of the diazole ring
 This subclass is indented under subclass 367.4.  Compounds wherein the nitrogen is bonded directly to diazole ring nitrogen or acyclic carbon is multiply bonded to the nitrogen.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 367.7

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[List of Patents for class 548 subclass 368.1]    368.1Chalcogen attached directly to the nitrogen by nonionic bonding [e.g., 5- (2-carbethoxyphenoxy)-1,3-dimethyl-4-nitropyrazole, etc.]
 This subclass is indented under subclass 367.4.  Compounds wherein the nitrogen is attached directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 368.1

  
[List of Patents for class 548 subclass 368.4]    368.4Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen
 This subclass is indented under subclass 367.4.  Compounds wherein the nitrogen is bonded directly to a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 368.4

  
[List of Patents for class 548 subclass 368.7]    368.7The nitrogen and the chalcogen are directly bonded to non-adjacent carbons of the diazole ring (e.g., pyrazolone imide or imino pyrazolone, etc.)
 This subclass is indented under subclass 367.4.  Compounds wherein the chalcogen and the nitrogen are bonded directly to diazole ring carbons which are nonadjacent to each other.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 368.7

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[List of Patents for class 548 subclass 369.1]    369.1Chalcogen attached indirectly to the nitrogen by acyclic nonionic bonding
 This subclass is indented under subclass 367.4.  Compounds wherein the nitrogen is attached indirectly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 369.1

  
[List of Patents for class 548 subclass 369.4]    369.4Having -C(=X)-, wherein X is chalcogen bonded directly to the diazole ring
 This subclass is indented under subclass 366.1.  Compounds in which a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 369.4

  
[List of Patents for class 548 subclass 369.7]    369.7Acyclic nitrogen or chalcogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 369.4.  Compounds wherein the -C(=X)- group is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or acyclic nitrogen.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 369.7

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[List of Patents for class 548 subclass 370.1]    370.1Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 366.1.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 370.1

  
[List of Patents for class 548 subclass 370.4]    370.4Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 366.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 370.4

  
[List of Patents for class 548 subclass 370.7]    370.7The chalcogen is bonded directly at the 4-position of the diazole ring
 This subclass is indented under subclass 366.1.  Compounds wherein the chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon at the 4- position of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 370.7

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[List of Patents for class 548 subclass 371.1]    371.1Benzene ring is bonded directly to ring nitrogen of the diazole ring (e.g., 1-phenyl-3-methyl-5-pyrazolone; antipyrine, etc.)
 This subclass is indented under subclass 366.1.  Compounds wherein benzene ring is bonded directly to ring nitrogen of the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 371.1

Image 2 for class 548 subclass 371.1

Image 3 for class 548 subclass 371.1

  
[List of Patents for class 548 subclass 371.4]    371.4Nitrogen attached directly to the diazole ring by nonionic bonding
 This subclass is indented under subclass 356.1.  Compounds wherein nitrogen is attached directly to the ring by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 371.4

  
[List of Patents for class 548 subclass 371.7]    371.7Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 371.4.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 371.7

  
[List of Patents for class 548 subclass 372.1]    372.1Chalcogen attached directly to the nitrogen by nonionic bonding [e.g., N-(2-hydroxyethyl)-4-nitropyrazole, etc.]
 This subclass is indented under subclass 371.4.  Compounds wherein the nitrogen is attached directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) by nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 372.1

  
[List of Patents for class 548 subclass 372.5]    372.5Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding [e.g., 1-(2-hydroxyethyl)-3-amino-4(para-chlorophenyl)-pyrazole, etc.]
 This subclass is indented under subclass 371.4.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 372.5

Image 2 for class 548 subclass 372.5

  
[List of Patents for class 548 subclass 373.1]    373.1Two double bonds between ring members of the diazole ring (i.e., pyrazole)
 This subclass is indented under subclass 356.1.  Compounds wherein the 1,2-diazole ring contains two double bonds between ring members.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 373.1

Image 2 for class 548 subclass 373.1

Image 3 for class 548 subclass 373.1

Image 4 for class 548 subclass 373.1

  
[List of Patents for class 548 subclass 374.1]    374.1Having -C(=X)-, wherein X is chalcogen bonded directly to the diazole ring
 This subclass is indented under subclass 373.1.  Compounds wherein, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the diazole ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 374.1

  
[List of Patents for class 548 subclass 375.1]    375.1Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 373.1.  Compounds wherein nitrogen is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 375.1

  
[List of Patents for class 548 subclass 376.1]    376.1Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 373.1.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 376.1

  
[List of Patents for class 548 subclass 377.1]    377.1Benzene ring bonded directly to the diazole ring
 This subclass is indented under subclass 373.1.  Compounds wherein the diazole ring is bonded directly to a benzene ring.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 377.1

  
[List of Patents for class 548 subclass 379.1]    379.1One double bond between ring memebers of the diazole ring (i.e., pyrazoline)
 This subclass is indented under subclass 356.1.  Compounds wherein the 1,2-diazole ring contains one double bond between ring members.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 379.1

Image 2 for class 548 subclass 379.1

  
[List of Patents for class 548 subclass 379.4]    379.4Chalcogen or nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
 This subclass is indented under subclass 379.1.  Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.
(1) Note. This subclass contains, for example:

Image 1 for class 548 subclass 379.4

Image 2 for class 548 subclass 379.4

  
[List of Patents for class 548 subclass 379.7]    379.7Plural benzene rings bonded directly to the diazole ring
 This subclass is indented under subclass 379.1.  Compounds containing at least two benzene rings bonded directly to the diazole ring.
(1) Note. This subclass ring contains, for example:

Image 1 for class 548 subclass 379.7

Image 2 for class 548 subclass 379.7

  
[List of Patents for class 548 subclass 400]    400Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.)
 This subclass is indented under subclass 1.  Compounds under Class 540, which contain a five-membered hetero ring consisting of one nitrogen atom and four carbon atoms.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 400

  
[List of Patents for class 548 subclass 401]    401With preservative or stabilizer
 This subclass is indented under subclass 400.  Products which contain a compound having a hetero ring consisting of one nitrogen and four carbon atoms in admixture with a preserving or stabilizing agent whose sole function is to prevent physical or chemical change.
  
[List of Patents for class 548 subclass 402]    402Heavy metal or aluminum containing
 This subclass is indented under subclass 400.  Compounds which include aluminum or a metal having a specific gravity greater than four.
(1) Note. Arsenic is considered a metal.
(2) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 402

  
[List of Patents for class 548 subclass 403]    403The metal is bonded directly to chalcogen, which chalcogen is attached directly or indirectly to the five-membered hetero ring by nonionic bonding pyrazole ring carbon
 This subclass is indented under subclass 402.  Compounds wherein the metal /is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) which is attached directly or indirectly to the five-membered hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 403

  
[List of Patents for class 548 subclass 404]    404Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., cyclic imides, etc.)
 This subclass is indented under subclass 402.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded to ring carbons of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 404

  
[List of Patents for class 548 subclass 405]    405Boron containing
 This subclass is indented under subclass 400.  Compounds which contain boron.
  
[List of Patents for class 548 subclass 406]    406Silicon containing
 This subclass is indented under subclass 400.  Compounds which contain silicon.
  
[List of Patents for class 548 subclass 407]    407Spiro
 This subclass is indented under subclass 400.  Compounds which contain a spiro ring system.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 407

  
[List of Patents for class 548 subclass 408]    408The spiro includes the five-membered hetero ring
 This subclass is indented under subclass 407.  Compounds wherein the five-membered hetero ring is one of the rings in the spiro ring system.
(1) Note. An Example of a compound provided for herein is:

Image 1 for class 548 subclass 408

  
[List of Patents for class 548 subclass 409]    409Both rings which form the spiro are hetero rings
 This subclass is indented under subclass 408.  Compounds wherein both rings in the spiro ring system are hetero rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 410]    410Acyclic chalcogen attached directly to the five-membered nitrogen containing spiro hetero ring by nonionic bonding
 This subclass is indented under subclass 409.  Compounds wherein acyclic chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached directly to the five-membered nitrogen containing spiro hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 411]    411Polycyclo ring system having one of the two rings which form the spiro as one of the cyclos
 This subclass is indented under subclass 408.  Compounds wherein one of the two rings which form the spiro ring system is additionally one of the cyclos of a polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 412]    412Phosphorus attached directly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 400.  Compounds wherein phosphorus is attached directly to the five-membered hetero ring by nonionic bonding.
  
[List of Patents for class 548 subclass 413]    413Phosphorus attached indirectly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 400.  Compounds wherein phosphorus is attached indirectly to the five-membered hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 414]    414Polycyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 413.  Compounds wherein the five-membered hetero ring is a cyclo in a polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 415]    415Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring
 This subclass is indented under subclass 414.  Compounds wherein at least two chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) atoms are bonded directly to ring carbons of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 416]    416Polycyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 400.  Compounds wherein the five-membered hetero ring is one of the cyclos of a polycyclo ring system.
  
[List of Patents for class 548 subclass 417]    417The polycyclo ring system has at least six cyclos, and has either a ring carbon that is shared by three of the cyclos or has a ring chalcogen
 This subclass is indented under subclass 416.  Compounds wherein the polycyclo ring system contains at least six cyclos and has either a ring carbon that is shared by three of the cyclos of the polycyclo ring system, or has a ring chalcogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 418]    418Pentacyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 416.  Compounds wherein the polycyclo ring system consists of exactly five cyclos.
  
[List of Patents for class 548 subclass 419]    419Two of the cyclos share at least three ring members, or a ring carbon is shared by three of the cyclos (e.g., bridged, peri-fused, etc.)
 This subclass is indented under subclass 418.  Compounds wherein at least three ring members of one cyclo are ring members of an additional cyclo in the pentacyclo ring system, or wherein one ring carbon is a member of three of the cyclos in the pentacyclo system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 420]    420Tetracyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 416.  Compounds wherein the polycyclo ring system consists of exactly four cyclos.
  
[List of Patents for class 548 subclass 421]    421Plural ring hetero atoms in the tetracyclo ring system
 This subclass is indented under subclass 420.  Compounds wherein the tetracyclo ring system contains at least one ring hetero atom in addition to the ring nitrogen of the five-membered hetero ring.
  
[List of Patents for class 548 subclass 422]    422Three-membered nitrogen containing hetero ring is cyclo in the tetracyclo ring system (e.g., mitomycin C, etc.)
 This subclass is indented under subclass 421.  Compounds wherein one of the cyclos of the tetracyclo ring system is a three-membered hetero ring which contains ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 423]    423Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., cyclic imides, etc.)
 This subclass is indented under subclass 421.  Compounds wherein at least two chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) atoms are bonded directly to ring carbons of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 424]    424Two of the cyclos share at least three ring members, or a ring carbon is shared by three of the cyclos (e.g., bridged, peri-fused, etc.)
 This subclass is indented under subclass 420.  Compounds wherein at least three ring members of one cyclo are ring members of an additional cyclo in the tetracyclo ring system, or wherein one ring carbon is a member of three of the cyclos in the tetracyclo ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 425]    425Benzene ring is cyclo in the tetracyclo ring system
 This subclass is indented under subclass 424.  Compounds wherein one of the cyclos of the tetracyclo ring system is a benzene ring.
  
[List of Patents for class 548 subclass 426]    426The five-membered hetero ring shares ring members with one other cyclo only
 This subclass is indented under subclass 420.  Compounds wherein ring members of the five-membered hetero ring are ring members of one additional cyclo only in the tetracyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 427]    427Tricyclo ring system having the five-membered hetero ring as one of the cyclos
 This subclass is indented under subclass 416.  Compounds wherein the polycyclo ring system consists of exactly three cyclos.
  
[List of Patents for class 548 subclass 428]    428Ring nitrogen is shared by two of the cyclos
 This subclass is indented under subclass 427.  Compounds wherein two of the cyclos in the tricyclo ring system share a ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 429]    429Plural ring hetero atoms in the tricyclo ring system
 This subclass is indented under subclass 427.  Compounds wherein the tricyclo ring system contains at least one ring hetero atom in addition to the ring nitrogen of the five-membered hetero ring.
  
[List of Patents for class 548 subclass 430]    430Ring chalcogen in the tricyclo ring system
 This subclass is indented under subclass 429.  Compounds wherein the tricyclo ring system contains ring chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
  
[List of Patents for class 548 subclass 431]    431Chalcogen bonded directly to ring carbon of the five-membered hetero ring (e.g., cyclic imides, etc.)
 This subclass is indented under subclass 430.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 432]    432Pyrano(3,4-b)indoles or thiopyrano(3,4-b) indoles (including hydrogenated)
 This subclass is indented under subclass 430.  Compounds wherein the tricyclo ring system has the following basic structure, which may contain double bonds between ring members and wherein X is oxygen or sulfur:

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[List of Patents for class 548 subclass 433]    433The tricyclo ring system consists of a benzene ring which shares ring carbons with two nitrogen containing hetero rings (e.g., pyromellitic diimide, etc.)
 This subclass is indented under subclass 429.  Compounds wherein the tricyclo ring system consists of a benzene ring which shares ring carbons with two nitrogen containing hetero rings.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 434]    434Two of the cyclos share at least three ring members (i.e., bridged)
 This subclass is indented under subclass 427.  Compounds wherein at least three ring members of one cyclo are ring members of an additional cyclo in the tricyclo ring system.
  
[List of Patents for class 548 subclass 435]    435Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., cyclic imides, etc.)
 This subclass is indented under subclass 434.  Compounds wherein at least two chalcogen atoms (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the five-membered hetero ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 436]    436A ring carbon is shared by three of the cyclos (e.g., peri-fused, etc.)
 This subclass is indented under subclass 427.  Compounds wherein the same ring carbon is a member of each of the three cyclos of the tricyclo ring system.
  
[List of Patents for class 548 subclass 437]    437Chalcogen bonded directly to ring carbon of the five-membered hetero ring (e.g., naphthostyril, etc.)
 This subclass is indented under subclass 436.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the five-membered hetero ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 438]    438Benzene ring, which is not a cyclo in the tricyclo ring system, bonded directly to ring carbon of the five-membered hetero ring
 This subclass is indented under subclass 436.  Compounds wherein a benzene ring, which is not a cyclo in the tricyclo ring system, is bonded directly to ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 439]    439The five-membered hetero ring shares ring carbons with two carbocyclic rings (e.g., tetrahydrocarbazoles, etc.)
 This subclass is indented under subclass 427.  Compounds wherein each of the two carbocyclic rings in the tricyclo ring system share ring carbons with the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 440]    440The five-membered hetero ring shares ring carbons with two benzene rings (i.e., carbazoles)
 This subclass is indented under subclass 439.  Compounds wherein each of two benzene rings in the tricyclo ring system shares ring carbons with the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 441]    441Having -C(=X)-, wherein X is chalcogen, bonded directly to the tricyclo ring system (e.g., carbazole-3-carboxylic acid, etc.)
 This subclass is indented under subclass 440.  Compounds wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the tricyclo ring system.
  
[List of Patents for class 548 subclass 442]    442One of the benzene rings and an additional carbocyclic ring bonded directly to the same acyclic nitrogen
 This subclass is indented under subclass 440.  Compounds wherein an additional carbocyclic ring and one of the benzene rings of the tricyclo ring system are bonded directly to the same acyclic nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 443]    443Azido or sulfonyl attached directly to the tricyclo ring system by nonionic bonding (e.g., carbazole sulfonic acid, etc.)
 This subclass is indented under subclass 440.  Compounds wherein -N3, or is attached directly to the tricyclo ring system by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 444]    444Chalcogen or nitrogen attached indirectly to the tricyclo ring system by acyclic nonionic bonding
 This subclass is indented under subclass 440.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen is attached indirectly to the tricyclo ring system by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 445]    445The tricyclo ring system is unsubstituted or is hydrocarbyl substituted only (e.g., N-vinyl carbazole, etc.)
 This subclass is indented under subclass 440.  Compounds wherein the tricyclo ring system is either unsubstituted or substituted by hydrocarbyl groups only.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 446]    446Carbazole per se or alkyl substituted only
 This subclass is indented under subclass 445.  Compounds which have the following structure, and which may contain alkyl substitution only:

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[List of Patents for class 548 subclass 447]    447Processes of forming by cyclization or alkylation
 This subclass is indented under subclass 446.  Processes of preparing unsubstituted carbazole or alkyl substituted carbazoles only, by cyclization or by alkylation.
(1) Note. The unsubstituted carbazole is prepared by cyclization (e.g., of o-aminobiphenyl). The alkyl carbazoles are prepared either by cyclization (e.g., of an alkyl substituted o-aminobiphenyl), or by alkylation of carbazole.
  
[List of Patents for class 548 subclass 448]    448Having -C(=X)-, wherein X is chalcogen, bonded directly to ring carbon of the tricyclo ring system (e.g., 1, 2, 3, 4-tetrahydrocarbazole -3 carboxylic acid, etc.)
 This subclass is indented under subclass 439.  Compounds wherein a group, in which X is chalcogen (i.e. oxygen, sulfur, selenium, or tellurium), is bonded directly to ring carbon of the tricyclo ring system.
  
[List of Patents for class 548 subclass 449]    449Chalcogen or nitrogen attached indirectly to ring nitrogen of the five membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 439.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen is attached indirectly to ring nitrogen of the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 450]    450Chalcogen bonded directly to ring carbon of the five-membered hetero ring (e.g., indigoid dyes, etc.)
 This subclass is indented under subclass 427.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 451]    451Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., cyclic imides, naphthisatins, etc.)
 This subclass is indented under subclass 450.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the five-membered hetero ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 452]    452Bicyclo ring system having the five-membered hetero ring as one of the cyclos (e.g., octahydroindoles, etc.)
 This subclass is indented under subclass 416.  Compounds wherein the polycyclo ring system consists of exactly two cyclos.
  
[List of Patents for class 548 subclass 453]    453Plural ring hetero atoms in the bicyclo ring system, or ring nitrogen is shared by the two cyclos of the bicyclo ring system
 This subclass is indented under subclass 452.  Compounds wherein the bicyclo ring system contains at least one ring hetero atom in addition to the ring nitrogen of the five-membered hetero ring, or wherein the ring nitrogen is additionally a member of the other cyclo of the bicyclo ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 454]    454Additional polycyclo heterocyclic ring system attached directly or indirectly to the bicyclo ring system by nonionic bonding
 This subclass is indented under subclass 452.  Compounds wherein an additional polycyclo heterocyclic ring system is attached directly or indirectly to the bicyclo ring system by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 455]    455The additional polycyclo ring system includes a five-membered nitrogen containing hetero ring
 This subclass is indented under subclass 454.  Compounds wherein a five-membered nitrogen containing hetero ring is a cyclo in the additional polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 456]    456Lactone ring containing (e.g., 3,3-bisindolyl phthalides, etc.)
 This subclass is indented under subclass 455.  Compounds which contain a lactone ring, (i.e., a cyclic inner ester wherein -C(=X)O- is part of the ring and X represents chalcogen, i.e., oxygen, sulfur, selenium, tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 457]    457Ring carbon of one of the five-membered hetero rings is bonded directly to ring carbon of the other (e.g., indigo dyes, etc.)
 This subclass is indented under subclass 455.  Compounds wherein a ring carbon of one of the five-membered hetero rings is bonded directly to a ring carbon of the other five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 458]    458By a single bond (e.g., leuco indigo, etc.)
 This subclass is indented under subclass 457.  Compounds wherein the ring carbons are bonded to each other by a single bond.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 459]    459Halogen attached directly or indirectly to the bicyclo ring system by nonionic bonding (e.g., dibromoindigo, etc.)
 This subclass is indented under subclass 457.  Compounds wherein halogen is attached directly or indirectly to the bicyclo ring system ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 460]    460Ring carbon of each of the two five-membered hetero rings is bonded directly to chalcogen or nitrogen (e.g., both rings may be bonded to the same nitrogen atom or to different nitrogen atoms, etc.)
 This subclass is indented under subclass 455.  Compounds wherein a ring carbon of each of the two five-membered hetero rings is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), or nitrogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 461]    461Plural chalcogens bonded directly to ring carbons of each of the two five membered hetero rings (e.g., bisphthalimides, etc.)
 This subclass is indented under subclass 460.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of each of the two five-membered hetero rings.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 462]    462The ring nitrogen of each of the two five-membered hetero rings is bonded directly to the same atom or chain, which chain may include a ring (e.g., N,N'-ethylene-bisphthalimide, etc.)
 This subclass is indented under subclass 461.  Compounds wherein the ring nitrogen of each of the two five-membered hetero rings is bonded directly to the same atom or chain, which chain may include a ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 463]    463The additional polycyclo heterocyclic ring system has a lactone ring as one of the cyclos
 This subclass is indented under subclass 454.  Compounds wherein one of the cyclos of the additional polycyclo heterocyclic ring system is a lactone ring, (i.e., a cyclic inner ester wherein -C(+X)O- is part of the ring and X represents chalcogen, i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 464]    464Ring carbon of the five-membered hetero ring is bonded directly to a ring carbon of the hetero ring which is a cyclo in the additional polycyclo heterocyclic ring system (e.g., indigoid dyes, etc.)
 This subclass is indented under subclass 454.  Compounds wherein a ring carbon of the hetero ring which is a cyclo in the additional polycyclo heterocyclic ring system is bonded directly to a ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 465]    465Additional hetero ring, attached directly or indirectly to the bicyclo ring system by nonionic bonding
 This subclass is indented under subclass 452.  Compounds wherein an additional hetero ring is attached directly or indirectly to the bicyclo ring system by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 466]    466The additional hetero ring is bonded directly to a ring carbon of the bicyclo ring system
 This subclass is indented under subclass 465.  Compounds wherein the additional hetero ring is bonded directly to a ring carbon of the bicyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 467]    467Substituent on ring carbon of the bicyclo ring system contains the additional hetero ring
 This subclass is indented under subclass 465.  Compounds wherein the additional hetero ring is in a substituent on a ring carbon of the bicyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 468]    468The additional hetero ring and the bicyclo ring system are attached directly to the same acyclic carbon or acyclic carbon chain
 This subclass is indented under subclass 467.  Compounds wherein the bicyclo ring system and the additional hetero ring are attached directly to the same acyclic carbon or acyclic carbon chain.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 469]    469The bicyclo ring system consists of the five-membered hetero ring and a benzene ring (e.g., indole, etc.)
 This subclass is indented under subclass 452.  Compounds wherein the five-membered hetero ring and a benzene ring are the cyclos of the bicyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 470]    470The ring nitrogen is bonded directly to two ring carbons of the same cyclo which carbons are members of one cyclo only (i.e., isoindoles or isoindolenines)
 This subclass is indented under subclass 469.  Compounds wherein the ring nitrogen is bonded directly to two ring carbons of the same cyclo, which carbons are members of one cyclo only.
(1) Note. There exists a tautomeric equivalence between isoindoles and insoindolenines, as is shown below. This subclass provided for both isoindoles and isoindolenines.

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(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 471]    471Nitrogen bonded directly to ring carbon of the five-membered hetero ring
 This subclass is indented under subclass 470.  Compounds wherein nitrogen is bonded directly to ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 472]    472Chalcogen bonded directly to ring carbon of the five-membered hetero ring (e.g., phthalimidines, etc.)
 This subclass is indented under subclass 470.  Compounds wherein chalcogen (oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 473]    473Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., phthalimides, etc.)
 This subclass is indented under subclass 472.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 474]    474Polycyclo carbocyclic ring system having at least three cyclos
 This subclass is indented under subclass 473.  Compounds which contain a polycyclo carbocyclic ring system having at least three cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 475]    475Chalcogen or nitrogen attached directly to the ring nitrogen of the five membered hetero ring by nonionic bonding
 This subclass is indented under subclass 473.  Compounds wherein the ring nitrogen of the five-membered hetero ring is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 476]    476Benzene ring bonded directly to the ring nitrogen of the five-membered hetero
 This subclass is indented under subclass 473.  Compounds wherein the ring nitrogen of the five-membered hetero ring is bonded directly to a benzene ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 477]    477Nitrogen attached indirectly to the ring nitrogen of the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 473.  Compounds wherein nitrogen is attached indirectly to the ring nitrogen of the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 478]    478Chalcogen attached indirectly to the ring nitrogen of the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 473.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the ring nitrogen of the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 479]    479The chalcogen, X, is in a -C(=X)- group (e.g., beta - phthalimidopropionaldehyde, etc.)
 This subclass is indented under subclass 478.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 480]    480The ring nitrogen of the five-membered hetero ring is unsubstituted or hydrocarbyl substituted only
 This subclass is indented under subclass 473.  Compounds wherein the substituent on the ring nitrogen of the five-membered hetero ring is hydrogen or hydrocarbyl only.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 481]    481Chalcogen or nitrogen attached indirectly to ring carbon of the bicyclo ring system by acyclic nonionic bonding
 This subclass is indented under subclass 480.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen is attached indirectly to ring carbon of the bicyclo ring system by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 482]    482The five-membered hetero ring contains one double bond only (i.e., isoindolines)
 This subclass is indented under subclass 470.  Compounds wherein there is only one double bond between ring members of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 483]    483Nitrogen attached directly to the five-membered hetero ring by nonionic bonding (e.g., 2-amino indoles, etc.)
 This subclass is indented under subclass 469.  Compounds wherein nitrogen is attached directly to the five-membered hetero ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 484]    484Chalcogen bonded directly to ring carbon of the five-membered hetero ring (e.g., 3-indolols, etc.)
 This subclass is indented under subclass 469.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 485]    485Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., isatins, etc.)
 This subclass is indented under subclass 484.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 486]    486The chalcogen is bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., 2-indolinones, etc.)
 This subclass is indented under subclass 484.  Compounds wherein the chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 487]    487Two benzene rings bonded directly to the same ring carbon of the five membered hetero ring
 This subclass is indented under subclass 486.  Compounds wherein a ring carbon of the five-membered hetero ring is bonded directly to two benzene rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 488]    488Polycyclo carbocyclic ring system bonded direcly to a ring carbon of the five-membered hetero ring (e.g., indol-alpha-naphtholindigo, etc.)
 This subclass is indented under subclass 484.  Compounds wherein a ring carbon of the five-membered hetero ring is bonded directly to a polycyclo carbocyclic ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 489]    489Process of forming the bicyclo ring system directly from reactant which contains acyclic nitrogen bonded directly to a benzene ring (e.g., indoxyl from phenylglycine, etc.)
 This subclass is indented under subclass 484.  Processes wherein the bicyclo ring system is formed directly from a reactant which contains a benzene ring bonded directly to an acyclic nitrogen.
(1) Note. This subclass provides for such processes as: the reaction of N-methyl anthranilic acid with sodium amide to form indoxyl, and the reaction of phenylglycine with alkali to form indoxyl.
  
[List of Patents for class 548 subclass 490]    490The five-membered hetero ring contains one double bond only (i.e., indolines)
 This subclass is indented under subclass 469.  Compounds wherein there is only one double bond between ring members of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 491]    491Chalcogen or nitrogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 490.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen is attached indirectly to the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 492]    492Having -C(=X)-, wherein X is chalcogen, bonded directly to ring carbon of the five-membered hetero ring (e.g., indole-2-carboxylic acids, etc.)
 This subclass is indented under subclass 469.  Compounds wherein a ring carbon of the five-membered hetero ring is bonded directly to a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 493]    493Hydrogen or additional carbon bonded directly to the -C(=X)- group (e.g., aldehydes,ketones, etc.)
 This subclass is indented under subclass 492.  Compounds wherein the group is bonded directly to hydrogen, or to an additional carbon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 494]    494Having -C(=X)-, wherein X is chalcogen, attached indirectly to ring carbon of the five-membered hetero ring by an acyclic carbon or acyclic carbon chain (e.g., indole-3-acetic acid, etc.)
 This subclass is indented under subclass 469.  Compounds wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is attached indirectly to a ring carbon of the five-membered hetero ring by an acyclic carbon or an acyclic carbon chain.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 495]    495Acyclic nitrogen bonded directly to the acyclic carbon or acyclic carbon chain
 This subclass is indented under subclass 494.  Compounds wherein an acyclic nitrogen is bonded directly to the acyclic carbon or acyclic carbon chain.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 496]    496The acyclic carbon or acyclic carbon chain is further unsubstituted or alkyl substituted only (e.g., tryptophane, etc.)
 This subclass is indented under subclass 495.  Compounds wherein the acyclic carbon or acyclic carbon chain is further unsubstituted or alkyl substituted only.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 497]    497Processes
 This subclass is indented under subclass 496.  Processes for preparing the compound, or for separating the compound from impurities or from the reaction mixture.
  
[List of Patents for class 548 subclass 498]    498Racemization or optical resolution
 This subclass is indented under subclass 497.  Processes for (a) the formation of a racemic mixture from an enantiomer (optical isomer), or (b) for the resolution (separation) of optical isomers, which may be diastereomers or enantiomers.
  
[List of Patents for class 548 subclass 499]    499Preparing from hydantoins or proteins
 This subclass is indented under subclass 497.  Processes wherein hydantoins or proteins are utilized as reactants in processes of preparation.
  
[List of Patents for class 548 subclass 500]    500Having -C(=X)-, wherein X is chalcogen, bonded directly to ring nitrogen of the five-membered hetero ring (e.g., indomethacin, etc.)
 This subclass is indented under subclass 494.  Compounds wherein a group, in which X is chalcogen (i.e. oxygen, sulfur, selenium, or tellurium), is bonded directly to ring nitrogen of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 501]    501Processes
 This subclass is indented under subclass 500.  Processes for preparing the compound, or for separating the compound from impurities or from the reaction mixture.
  
[List of Patents for class 548 subclass 502]    502Processes
 This subclass is indented under subclass 494.  Processes for preparing the compound, or for separating the compound from impurities, or from the reaction mixture.
  
[List of Patents for class 548 subclass 503]    503Nitrogen attached indirectly to ring carbon of the bicyclo ring system by acyclic nonionic bonding
 This subclass is indented under subclass 469.  Compounds wherein nitrogen is attached indirectly to ring carbon of the bicyclo ring system by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 504]    504Nitrogen attached indirectly to ring carbon of the five-membered hetero ring by acyclic nonionic bonding (e.g., tryptamine, etc.)
 This subclass is indented under subclass 503.  Compounds wherein nitrogen is attached indirectly to a ring carbon of the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 505]    505The nitrogen is double or triple bonded directly to carbon
 This subclass is indented under subclass 504.  Compounds wherein the nitrogen is double or triple bonded directly to carbon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 506]    506Benzene ring bonded directly or attached indirectly by an acyclic carbon or an acyclic carbon chain to ring carbon of the five-membered hetero ring
 This subclass is indented under subclass 504.  Compounds wherein a benzene ring is bonded directly to a ring carbon of the five-membered hetero ring, or a benzene ring is attached indirectly to a ring carbon of the five-membered hetero ring by an acyclic carbon atom or acyclic carbon chain.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 507]    507Chalcogen or additional nitrogen attached indirectly to ring carbon of the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 504.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or an additional nitrogen is attached indirectly to ring carbon of the five-membered hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 508]    508Processes of forming the bicyclo ring system by cyclization (e.g., forming indole from o-ethyl aniline, etc.)
 This subclass is indented under subclass 469.  Processes wherein the bicyclo ring system is formed by ring closure.
(1) Note. Examples of processes provided for herein are: cyclization of o-ethyl aniline to form indole, and cyclization of 3-butyl pyrrole to form indole.
  
[List of Patents for class 548 subclass 509]    509Chalcogen attached indirectly to the bicyclo ring system by acyclic nonionic bonding
 This subclass is indented under subclass 469.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the bicyclo ring system by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 510]    510The chalcogen, X, is in a -C(=X)- group
 This subclass is indented under subclass 509.  Compounds wherein the chalcogen, X (i.e., oxygen, sulfur, selenium, or tellurium), is in a group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 511]    511Benzene ring bonded directly or attached indirectly by an acyclic carbon or an acyclic carbon chain to ring carbon of the five-membered hetero ring
 This subclass is indented under subclass 469.  Compounds wherein a benzene ring is bonded directly to a ring carbon of the five-membered hetero ring, or a benzene ring is attached indirectly to a ring carbon of the five-membered hetero ring by an acylic carbon atom or acyclic carbon chain.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 512]    512Chalcogen bonded directly to ring carbon of the five-membered hetero ring (e.g., adrenochrome, etc.)
 This subclass is indented under subclass 452.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 513]    513Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., imides, etc.)
 This subclass is indented under subclass 512.  Compounds wherein at least two chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) atoms are bonded directly to ring carbons of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 514]    514Chalcogen or nitrogen attached directly to ring nitrogen of the five membered hetero ring by nonionic bonding
 This subclass is indented under subclass 513.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen is attached directly to ring nitrogen of the five-membered hetero ring by nonionic bonding
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 515]    515The ring nitrogen is bonded directly to two ring carbons of the same cyclo which carbons are members of one cyclo only (e.g., cyclopenta(c)pyrroles, etc.)
 This subclass is indented under subclass 452.  Compounds wherein the ring nitrogen is bonded to two ring carbons of the same cyclo, which carbons are members of one cyclo only.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 516]    516Two double bonds between ring members of the five-membered hetero ring (e.g., 4,5,6,7-tetrahydroindoles, etc.)
 This subclass is indented under subclass 452.  Compounds wherein there are two double bonds between ring members of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 517]    517Additional hetero ring, which is attached directly or indirectly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 400.  Compounds wherein an additional hetero ring is attached directly or indirectly to the five-membered hetero ring by nonionic bonding.
(1) Note. An example of compound provided for herein is:

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[List of Patents for class 548 subclass 518]    518The additional hetero ring also contains nitrogen
 This subclass is indented under subclass 517.  Compounds wherein nitrogen is a ring member of the additional hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 519]    519Ring carbon of each of the two nitrogen containing hetero rings is bonded directly to chalcogen (e.g., both rings may be bonded to the same oxygen atom or to different oxygen atoms, etc.)
 This subclass is indented under subclass 518.  Compounds wherein a ring carbon of each of the two nitrogen containing hetero rings is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 520]    520Plural chalcogens bonded directly to ring carbons of each of the two nitrogen containing hetero rings (e.g., bis-succinimides, etc.)
 This subclass is indented under subclass 519.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of each of the two nitrogen containing hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 521]    521Double bond between ring carbons in each of the two nitrogen containing hetero rings (e.g., bis-maleimides, etc.)
 This subclass is indented under subclass 520.  Compounds wherein there is a double bond between ring carbons in each of the two nitrogen containing hetero rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 522]    522Processes
 This subclass is indented under subclass 521.  Processes for preparing the compound, or for separating the compound from impurities or from the reaction mixture.
  
[List of Patents for class 548 subclass 523]    523Ring nitrogens of the two nitrogen containing hetero rings are bonded directly to the same atom or chain, which chain may include a ring
 This subclass is indented under subclass 518.  Compounds wherein the ring nitrogen of each of the two nitrogen containing hetero rings is bonded to the same atom or chain, which chain may include a ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 524]    524The atom is carbon or the chain consists of carbons
 This subclass is indented under subclass 523.  Compounds wherein the atom is carbon, or the chain consists of carbon atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 525]    525Polycyclo ring system which includes ring chalcogen
 This subclass is indented under subclass 517.  Compounds which contain a polycyclo ring system which has a ring chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 526]    526Plural ring chalcogens in the polycyclo ring sytem (e.g., methylenedioxyphenyl containing, etc.)
 This subclass is indented under subclass 525.  Compounds wherein at least two ring chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are in the polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 527]    527Sulfur containing hetero ring
 This subclass is indented under subclass 517.  Compounds which contain a hetero ring having ring sulfur.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 528]    528Polycyclo carbocyclic ring system having at least three cyclos
 This subclass is indented under subclass 400.  Compounds which contain a polycyclo carbocyclic ring system having at least three cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 529]    529Attached directly to the five-membered hetero ring
 This subclass is indented under subclass 528.  Compounds wherein the polycyclo carbocyclic ring system is attached directly to the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 530]    530Having -C(=X)-, wherein X is chalcogen, bonded directly to the five membered hetero ring (e.g., pyrrole carbonyl halides, pyrrole carboxaldehyde, etc.)
 This subclass is indented under subclass 400.  Compounds wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 531]    531The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens (e.g., pyrrole-3-carboxylic acid, etc.)
 This subclass is indented under subclass 530.  Compounds wherein the is part of a X group, in which the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 532]    532And is bonded directly to a ring carbon which is adjacent to the ring nitrogen of the five-membered hetero ring (e.g., 4-hydroxy proline, etc.)
 This subclass is indented under subclass 531.  Compounds wherein the X group is bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 533]    533Additional -C(=X) bonded directly to the five-membered hetero ring (e.g., N n-butyryl-L-proline, etc.)
 This subclass is indented under subclass 532.  Compounds wherein an additional group is bonded directly to the five-membered hetero ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 534]    534Chalcogen bonded directly to the other ring carbon which is adjacent to the ring nitrogen of the five-membered hetero ring (e.g., 2-pyrrolidone-5 carboxylic acid, etc.)
 This subclass is indented under subclass 532.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the other ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 535]    535The five-membered hetero ring is further unsubstituted or alkyl substituted only (e.g., proline, etc.)
 This subclass is indented under subclass 532.  Compounds wherein the five-membered hetero ring is further unsubstituted, or alkyl substituted only.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 536]    536Additional -C(=X)- bonded directly to the five-membered hetero ring (e.g., pyrrole-3,4-dicarboxylic acid esters, etc.)
 This subclass is indented under subclass 531.  Compounds wherein an additional group is bonded directly to the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 537]    537Acyclic nitrogen bonded directly to the -C(=X)- (e.g., 4,5-dihalopyrrole -2 carboxamides, etc.)
 This subclass is indented under subclass 530.  Compounds wherein the group is bonded directly to acyclic nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 538]    538The -C(=X)- is bonded directly to the ring nitrogen of the five-membered hetero ring (e.g., 1-pyrrolidine carboxanilides, etc.)
 This subclass is indented under subclass 537.  Compounds wherein the group is bonded directly to the ring nitrogen of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 539]    539Carbocyclic ring bonded directly to the -C(=X)- (e.g., 3-benzoyl pyrrolidine, etc.)
 This subclass is indented under subclass 530.  Compounds wherein the group is bonded directly to a carbocyclic ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 540]    540Acyclic carbon bonded directly to the -C(=X)- (e.g., N-oleoylpyrrolidine, etc.)
 This subclass is indented under subclass 530.  Compounds wherein the group is bonded directly to an acyclic carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 541]    541Chalcogen attached directly to the five-membered hetero ring by nonionic bonding (e.g., 3-pyrrolidinols, etc.)
 This subclass is indented under subclass 400.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached directly to the five-membered hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 542]    542Chalcogen attached directly to ring nitrogen of the five-membered hetero ring by nonionic bonding (e.g., pyrrolidine-N-oxides, etc.)
 This subclass is indented under subclass 541.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached directly to ring nitrogen of the five-membered hetero ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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(2) Note. The oxide oxygen of an hetero N-oxide compound is considered to be attached to the ring nitrogen by nonionic bonding.
  
[List of Patents for class 548 subclass 543]    543Chalcogen bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., 2-pyrrolidones, etc.)
 This subclass is indented under subclass 541.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 544]    544And chalcogen bonded directly to a ring carbon of the five membered hetero ring which is not adjacent to the ring nitrogen (e.g., 2,4 pyrrolidinediones, etc.)
 This subclass is indented under subclass 543.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is also bonded to a ring carbon of the five-membered hetero ring which is not adjacent to the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 545]    545And chalcogen bonded directly to the other ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., succinimide, etc.)
 This subclass is indented under subclass 543.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is also bonded to the other ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 546]    546Nitrogen attached directly or indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 545.  Compounds wherein nitrogen is attached to the five-membered hetero ring directly or indirectly by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 547]    547Chalcogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 545.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 548]    548Carbon to carbon unsaturation between ring members of the five-membered hetero ring (e.g., maleimide, etc.)
 This subclass is indented under subclass 545.  Compounds wherein there is a double bond between ring carbons of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 549]    549Benzene ring bonded directly to ring nitrogen of the five-membered hetero ring (e.g., N-phenylmaleimide, etc.)
 This subclass is indented under subclass 548.  Compounds wherein a benzene ring is bonded directly to ring nitrogen of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 550]    550Nitrogen attached directly or indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 543.  Compounds wherein nitrogen is attached to the five-membered hetero ring directly, or indirectly by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 548 subclass 551]    551Chalcogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 543.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 552]    552Processes of forming 2-pyrrolidone which is unsubstituted or alkyl or alkenyl substituted only
 This subclass is indented under subclass 543.  Processes for forming 2-pyrrolidone, which has the following formula, or its alkyl or alkenyl substitution products:

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[List of Patents for class 548 subclass 553]    553Directly from a cyano containing compound (e.g., from succinonitrile, etc.)
 This subclass is indented under subclass 552.  Processes wherein the 2-pyrrolidone compound is prepared directly from a compound which contains the cyano group, -C-N.
  
[List of Patents for class 548 subclass 554]    554Directly from a -COO- containing compound (e.g., from methyl acrylate, etc.)
 This subclass is indented under subclass 552.  Processes wherein the 2-pyrrolidone compound is prepared directly from a compound which contains the -COO- group.
  
[List of Patents for class 548 subclass 555]    555Purification or recovery of 2-pyrrolidone which is unsubstituted or alkyl substituted only
 This subclass is indented under subclass 543.  Processes wherein 2-pyrrolidone, which is unsubstituted or alkyl substituted only, is separated from impurities, or from the reaction medium.
  
[List of Patents for class 548 subclass 556]    556Chalcogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding (e.g., 4-hydroxy -3-pyrrolidinemethanol, etc.)
 This subclass is indented under subclass 541.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 556

  
[List of Patents for class 548 subclass 557]    557Nitrogen attached directly to the five-membered hetero ring by nonionic bonding
 This subclass is indented under subclass 400.  Compounds wherein nitrogen is attached directly to the five-membered hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 557

  
[List of Patents for class 548 subclass 558]    558The nitrogen is bonded directly to a ring carbon which is adjacent to the ring nitrogen of the five-membered hetero ring
 This subclass is indented under subclass 557.  Compounds wherein the nitrogen is bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 558

  
[List of Patents for class 548 subclass 559]    559Carbocyclic ring bonded directly to the nitrogen
 This subclass is indented under subclass 558.  Compounds wherein a carbocyclic ring is bonded directly to the nitrogen which is bonded directly to the ring carbon.
(1) Note. An example of a compound provided for herein is.

Image 1 for class 548 subclass 559

  
[List of Patents for class 548 subclass 560]    560Two double bonds between ring members of the five-membered hetero ring
 This subclass is indented under subclass 400.  Compounds wherein there are two double bonds between ring members of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 560

  
[List of Patents for class 548 subclass 561]    561Nitrogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 560.  Compounds wherein nitrogen is attached indirectly to the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 561

  
[List of Patents for class 548 subclass 562]    562Chalcogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 560.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 562

  
[List of Patents for class 548 subclass 563]    563Benzene ring bonded directly to ring nitrogen of the five -membered hetero ring
 This subclass is indented under subclass 560.  Compounds wherein a benzene ring is bonded directly to the ring nitrogen of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 563

  
[List of Patents for class 548 subclass 564]    564The five-membered hetero ring is unsubstituted or alkyl substituted only (e.g., pyrrole, etc.)
 This subclass is indented under subclass 560.  Compounds wherein the five-membered hetero ring is unsubstituted, or alkyl substituted only.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 564

  
[List of Patents for class 548 subclass 565]    565One double bond between ring members of the five-membered hetero ring (i.e., pyrrolines)
 This subclass is indented under subclass 400.  Compounds wherein there is one double bond only between ring members of the five-membered hetero ring.
  
[List of Patents for class 548 subclass 566]    566Nitrogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 400.  Compounds wherein nitrogen is attached indirectly to the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 566

  
[List of Patents for class 548 subclass 567]    567The nitrogen is bonded directly to -C(=X)-, wherein X is chalcogen (e.g., 2 benzamidomethyl - pyrrolidines, etc.)
 This subclass is indented under subclass 566.  Compounds wherein a group, in which X is chalcogen (i.e. oxygen, sulfur, selenium, or tellurium), is bonded directly to the nitrogen.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 567

  
[List of Patents for class 548 subclass 568]    568Hydrogen or acyclic carbon bonded directly to the -C(=X)- (e.g., 2 pyrrolidine acrylamide, etc.)
 This subclass is indented under subclass 567.  Compounds wherein the group is additionally bonded to hydrogen, or to acyclic carbon.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 568

  
[List of Patents for class 548 subclass 569]    569The nitrogen is in a substituent attached to the ring nitrogen of the five membered hetero ring
 This subclass is indented under subclass 566.  Compounds wherein the nitrogen is part of a substituent that is attached to the ring nitrogen of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 569

  
[List of Patents for class 548 subclass 570]    570Chalcogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 400.  Compounds wherein chalcogen (i.e. oxygen, sulfur, selenium, or tellurium) is attached indirectly to the five-membered hetero ring by acyclic nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 570

  
[List of Patents for class 548 subclass 571]    571The chalcogen, X, is in a -C(=X)- group (e.g., 1-phenyl -2-pyrrolidino hexanone-1, etc.)
 This subclass is indented under subclass 570.  Compounds wherein the chalcogen, X (i.e. oxygen, sulfur, selenium, or tellurium), is in a group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 572]    572The -C(=X)- is part of a -C(=X)X- group wherein the X's are the same or diverse chalcogens (e.g., 3-pyrrolidinemethanol propionates, etc.)
 This subclass is indented under subclass 571.  Compounds wherein is part of a X group, in which the X"s are the same, or diverse chalcogens (i.e. oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 572

  
[List of Patents for class 548 subclass 573]    573The -C(=X)X- group is in a substituent attached to the ring nitrogen of the five-membered hetero ring (e.g., beta-pyrrolidyl ethyl ester of benzoic acid, etc.)
 This subclass is indented under subclass 572.  Compounds wherein the X group is part of a substituent attached to the ring nitrogen of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 574]    574The chalcogen is in a substituent attached to the ring nitrogen of the five membered hetero ring
 This subclass is indented under subclass 570.  Compounds wherein the chalcogen (i.e. oxygen, sulfur, selenium, or tellurium) is part of a substituent which is attached to the ring nitrogen of the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 575]    575Carbocyclic ring bonded directly to the chalcogen
 This subclass is indented under subclass 574.  Compounds wherein the chalcogen (i.e. oxygen, sulfur, selenium, or tellurium) is bonded directly to a carbocyclic ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 575

  
[List of Patents for class 548 subclass 576]    576The substituent on the ring nitrogen of the five-membered hetero ring contains a bicyclo carbocyclic ring system
 This subclass is indented under subclass 575.  Compounds wherein a bicyclo carbocyclic ring system is part of the substituent on the ring nitrogen of the five-membered hetero ring.
  
[List of Patents for class 548 subclass 577]    577Benzene ring bonded directly to the five-membered hetero ring
 This subclass is indented under subclass 400.  Compounds wherein a benzene ring is bonded directly to the five-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 577

  
[List of Patents for class 548 subclass 578]    578Benzene ring in a substituent attached to the ring nitrogen of the five membered hetero ring by nonionic bonding
 This subclass is indented under subclass 400.  Compounds wherein a benzene ring is part of a substituent attached to the ring nitrogen of the five-membered hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 578

  
[List of Patents for class 548 subclass 579]    579The five-membered hetero ring is unsubstituted or is alkyl substituted only (e.g., pyrrolidine, etc.)
 This subclass is indented under subclass 400.  Compounds wherein the five-membered hetero ring is unsubstituted, or is alkyl substituted only.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 579

  
[List of Patents for class 548 subclass 950]    950The hetero ring contains four members including nitrogen and carbon
 This subclass is indented under subclass 1.  Compounds under Class 540, wherein the hetero ring contains four members and has nitrogen and carbon as ring members.
  
[List of Patents for class 548 subclass 951]    951Plural hetero atoms in the hetero ring
 This subclass is indented under subclass 950.  Compounds in which the hetero ring contains at least two hetero atoms
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 951

  
[List of Patents for class 548 subclass 952]    952Chalcogen bonded directly to ring carbon of the hetero ring
 This subclass is indented under subclass 950.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to ring carbon of the hetero ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 952

  
[List of Patents for class 548 subclass 953]    953Nitrogen or -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring
 This subclass is indented under subclass 950.  Compounds in which nitrogen or -C(=X)-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the hetero ring.
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 953

Image 2 for class 548 subclass 953

  
[List of Patents for class 548 subclass 954]    954Hetero ring is three-membered including nitrogen and carbon
 This subclass is indented under subclass 1.  Compounds under Class 540, wherein the hetero ring contains three members and has nitrogen and carbon as ring members.
(1) Note. An example of a compound provided for herein:

Image 1 for class 548 subclass 954

  
[List of Patents for class 548 subclass 955]    955Heavy metal, boron or silicon containing
 This subclass is indented under subclass 954.  Compounds which contain boron, silicon or a metal having a specific gravity greater then four.
(1) Note. Arsenic is considered a metal for purposes of this subclass.
(2) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 955

Image 2 for class 548 subclass 955

  
[List of Patents for class 548 subclass 956]    956Phosphorus attached directly or indirectly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 954.  Compounds in which phosphorus is attached directly or indirectly to the hetero ring by nonionic bonding.
(1) Note. Example of compounds provided for herein are:

Image 1 for class 548 subclass 956

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[List of Patents for class 548 subclass 957]    957Plural phosphori
 This subclass is indented under subclass 956.  Compounds which contain at least two phosphorus atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 958]    958Spiro
 This subclass is indented under subclass 954.  Compounds which contain a spiro ring system.
  
[List of Patents for class 548 subclass 959]    959Plural hetero atoms in the hetero ring
 This subclass is indented under subclass 954.  Compounds wherein the hereto ring contains two hetero atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 960]    960Plural nitrogens in the hetero ring
 Compounds under subclass 959 wherein the hetero ring consists of two nitrogens and one carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 548 subclass 961]    961Polycyclo ring system having the hetero ring as one of the cyclos
 This subclass is indented under subclass 954.  Compounds wherein the hetero ring is one of the cyclos of a polycyclo ring system.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 961

  
[List of Patents for class 548 subclass 962]    962Additional hetero ring containing
 This subclass is indented under subclass 954.  Compounds which contain an additional hetero ring.
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 962

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[List of Patents for class 548 subclass 963]    963Plural three-membered nitrogen containing hetero rings bonded directly to the same ring
 This subclass is indented under subclass 962.  Compounds wherein at least two three-membered nitrogen containing hetero rings are bonded directly to the same ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 963

  
[List of Patents for class 548 subclass 964]    964Having -C(=X)-, wherein X is chalcogen, in chain between the hetero rings
 This subclass is indented under subclass 962.  Compounds in which a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is in a chain between the hetero rings.
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 964

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[List of Patents for class 548 subclass 965]    965Chalcogen, nitrogen or halogen attached directly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 954.  Compounds wherein nitrogen, halogen or chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached directly to the hetero ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

Image 1 for class 548 subclass 965

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[List of Patents for class 548 subclass 966]    966Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring
 This subclass is indented under subclass 954.  Compounds in which, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the hetero ring.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 966

  
[List of Patents for class 548 subclass 967]    967Nitrogen, other than as nitro or nitroso, attached indirectly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 954.  Compounds wherein nitrogen, other than as nitro (-NO2) for nitroso (-NO), is attached indirectly to the hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 967

  
[List of Patents for class 548 subclass 968]    968Chalcogen attached indirectly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 954.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached indirectly to the hetero ring by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 968

  
[List of Patents for class 548 subclass 969]    969The three-membered hetero ring is unsubstituted or alkyl substituted only
 This subclass is indented under subclass 954.  Compounds wherein the hetero ring is either unsubstituted or alkyl substituted only.
(1) Note. An example of a compound provided for herein is:

Image 1 for class 548 subclass 969

  

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