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 [Search a list of Patent Appplications for class 540]   CLASS 540,ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES
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SUBCLASSES

[List of Patents for class 540 subclass 1]    1HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS
 This subclass is indented under subclass 1.  Compounds under Class 532, ... which are heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium or tellurium) or nitrogen as the only ring hetero atoms.
(1) Note. An example of a compound provided for herein is:

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SEE OR SEARCH CLASS:

506Combinatorial Chemistry Technology: Method, Library, Apparatus,   for a chemical or biological library or a process of creating said library.
588Hazardous or Toxic Waste Destruction or Containment,   appropriate subclasses for the chemical destruction of hazardous or toxic waste.
  
[List of Patents for class 540 subclass 2]    2Cyclopentanohydrophenanthrene ring system containing
 This subclass is indented under subclass 1.  Compounds which additionally contain the cyclopentanohydrophenanthrene ring system, which may contain double bonds between its ring members; i.e.,

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(1) Note. The phenanthrene portion of this tetracyclic ring system cannot be completely aromatic; it must be hydrogenated to some degree.
(2) Note. In the indents hereunder which refer to positions, the numbers shown in the definition are employed.
(3) Note. Although the following structure types are properly classified elsewhere as pentacyclo ring systems and not here as cyclopentanohydrophenanthrenes, they have been crossed into appropriate cyclopentanohydrophenanthrene subclass(es) to make them available to the steroid examiners:

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

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SEE OR SEARCH CLASS:

514Drug, Bio-Affecting and Body Treating Compositions,   subclasses 172+ for a medical composition including a steroid compound with a hetero ring.
552Organic Compounds,   subclasses 502+ for nonheterocyclic cyclopentanohydrophenanthrene compounds.
  
[List of Patents for class 540 subclass 3]    3Heavy metal or aluminum containing
 This subclass is indented under subclass 2.  Compounds which include aluminum or a metal having a specific gravity greater than four.
(1) Note. Arsenic is considered a heavy metal.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 4]    4Boron or silicon containing
 This subclass is indented under subclass 2.  Compounds which contain boron or silicon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 5]    5Phosphorus attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding
 This subclass is indented under subclass 2.  Compounds wherein phosphorus is attached directly or indirectly to the cyclopentanohydrophenanthrene 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 540 subclass 6]    6Spiro
 This subclass is indented under subclass 2.  Compounds which contain a spiro ring system.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 7]    7Plural spiro atoms
 This subclass is indented under subclass 6.  Compounds which contain at least two discrete spiro atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 8]    8The cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos
 This subclass is indented under subclass 7.  Compounds wherein the cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 9]    9Nitrogen containing hetero ring as one of the cyclos of the polycyclo ring system
 This subclass is indented under subclass 8.  Compounds which a nitrogen containing hetero ring is one 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 540 subclass 10]    10The cyclopentanohydrophenanthrene ring system shares spiro atoms with two hetero rings, each of which contains two oxygens (e.g., 3,17-bis-ketals, etc.)
 This subclass is indented under subclass 7.  Compounds in which the cyclopentanohydrophenanthrene ring system shares spiro atoms with two hetero rings, each of which contains two oxygens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 11]    11The cyclopentanohydrophenanthrene ring system shares a spiro atom with a lactone ring (i.e., -C(=X)-O- is part of the ring, wherein X is chalcogen)
 This subclass is indented under subclass 7.  Compounds in which the cyclopentanohydrophenanthrene ring system shares a spiro atom with a lactone ring; i.e., - - O -, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), and is part of the ring.
(1) Note. An example of a compound provide for herein is

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[List of Patents for class 540 subclass 12]    12Plural oxygens in both rings which share a spiro atom (e.g., 17,20;20,21 bismethylenedioxy-pregnanes, etc.)
 This subclass is indented under subclass 7.  Compounds wherein both rings which share a spiro atom contain at least two oxygens.
(1) Note. An example of a compound provide for herein is:

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[List of Patents for class 540 subclass 13]    13Nitrogen, sulfur, cyano or -C(=X)-, wherein X is chalcogen, bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 12.  Compounds in which nitrogen, sulfur, cyano or -C(=X)-, wherein X is chalcogen (i.e, oxygen, sulfur, selenium or tellurium), is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 14]    14Halogen attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding
 This subclass is indented under subclass 12.  Compounds in which halogen is attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 15]    15The cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos
 This subclass is indented under subclass 6.  Compounds wherein the cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 16]    16Hetero ring is one of the cyclos of the polycyclo ring system
 This subclass is indented under subclass 15.  Compounds in which a hetero ring is one 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 540 subclass 17]    17The hetero ring is five-membered, consisting of one oxygen and four carbons, and shares the spiro atom with a six-membered oxygen containing hetero ring (e.g., sapogenins, etc.)
 This subclass is indented under subclass 16.  Compounds wherein the hetero ring is five-membered, consisting of one oxygen and four carbons, and shares the spiro atom with a six-membered hetero ring which contains oxygen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 18]    18Purification or recovery
 This subclass is indented under subclass 17.  Processes wherein the cyclopentanohydrophenanthrene containing compound is separated from impurities or from the reaction medium.
  
[List of Patents for class 540 subclass 19]    19Chalcogen bonded directly at the 12-position of the cyclopentanohydrophenanthrene ring system (e.g., hecogenin, etc.)
 This subclass is indented under subclass 17.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenim or tellurium) is bonded directly at the 12-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provide for herein is

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[List of Patents for class 540 subclass 20]    20Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 17.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 21]    21Chalcogen bonded directly at the 7-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 20.  Compounds wherein chalcogen (i.e, oxygen, sulfur, selenium or tellurium) is bonded directly at the 7-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 22]    22Halogen, cyano, nitrogen or sulfur bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 17.  Compounds wherein halogen, cyano,nitrogen or sulfur is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 23]    23The spiro atom is the 17-position carbon of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 16.  Compounds in which the 17-position carbon of the cyclopentanohydrophenanthrene ring system is the spiro atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 24]    24The hetero ring shares the 11,12,13-positions of the cyclopentanohydrophenanthrene ring system (i.e., bridged; e.g., 11,18-oxido steroids, etc.)
 This subclass is indented under subclass 16.  Compounds in which the hetero ring shares the 11, 12, 13-positions of the cyclopentanohydrophenanthrene ring system (i.e., C-ring bridge).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 25]    25The hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.)
 This subclass is indented under subclass 16.  Compounds in which the hetero ring is three-membered consisting of one oxygen and two carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 26]    26The hetero ring shares the 5,6-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 25.  Compounds wherein the three-membered hetero ring shares the 5, 6-position of the cyclopentanohydrophenanthrene ring system (i.e, ortho-fused to the B-ring).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 27]    27The hetero ring contains two chalcogens which are bonded directly at the 16 and 17-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 16.  Compounds wherein the hetero ring contains two chalcogens (i.e., oxygen, sulfur, selenium or tellurium) which are bonded directly at the 16- and 17-positions of the cyclopentanohydrophenanthrene ring system (i.e., orth-fused to the D-ring).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 28]    28The spiro includes the cyclopentanohydrophenanthrene ring system and a hetero ring
 This subclass is indented under subclass 6.  Compounds in which the cyclopentanohydrophenanthrene ring system shares a spiro atom with a hetero ring.
(1) Note. an example of a compound provided for herein is:

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[List of Patents for class 540 subclass 29]    29Nitrogen in the spiro hetero ring
 This subclass is indented under subclass 28.  Compounds in which the spiro hetero ring contains nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 30]    30Sulfur in the spiro hetero ring
 This subclass is indented under subclass 28.  Compounds in which the spiro hetero ring contains sulfur.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 31]    31Plural oxygens in the spiro hetero ring
 This subclass is indented under subclass 28.  Compounds in which the spiro hetero ring contains at least two oxygens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 32]    32The A ring is a benzene ring
 This subclass is indented under subclass 31.  Compounds in which the A ring of the cyclopentanohydrophenanthrene ring system contains three alternating double bonds (i.e., is a benzene ring).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 33]    33Chalcogen bonded directly to the spiro hetero ring
 This subclass is indented under subclass 31.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the spiro hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 34]    34The spiro hetero ring shares the 3-position carbon of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 31.  Compounds in which the spiro atom is the 3-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 35]    35Halogen bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 34.  Compounds in which halogen is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 36]    36Nitrogen attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding
 This subclass is indented under subclass 34.  Compounds in which nitrogen is attached directly or indirectly to the cyclopentanohydrophenanthrene 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 540 subclass 37]    37Plural cyclic ketal rings containing (e.g., 3,20-bis-ketals, etc.)
 This subclass is indented under subclass 34.  Compounds which contain at least two cyclic ketal rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 38]    38Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 34.  Compounds in which chalogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 39]    39The cyclopentanohydrophenanthrene ring system is fully saturated
 This subclass is indented under subclass 34.  Compounds wherein there are no double bonds between any ring members of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 40]    40Carbon chain having carbon-to-carbon unsaturation bonded directly at the 17 position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 34.  Compounds in which a carbon chain having carbon-to-carbon unsaturation is bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 41]    41The spiro hetero ring contains -C(=X)-O-, wherein X is chalcogen, as part of the ring (e.g., spiro-lactones, etc.)
 This subclass is indented under subclass 28.  Compounds in which-C-O-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is part of the spiro hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 42]    42Sulfur bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 41.  Compounds in which sulfur is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 43]    43Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 41.  Compounds in which chalcogen (i.e., oxygen, sulfur selenium or tellurium) is bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of compound provided for herein is:

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[List of Patents for class 540 subclass 44]    44Chalcogen, halogen, or nitrogen attached indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding
 This subclass is indented under subclass 41.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium or tellurium), halogen or nitrogen is attached indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 45]    45The spiro hetero ring is four-membered consisting of one oxygen and three carbons
 This subclass is indented under subclass 28.  Compounds in which the spiro hetero ring is four-membered consisting of one oxygen and three carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 46]    46The spiro hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.)
 This subclass is indented under subclass 28.  Compounds wherein the spiro hetero ring is three-membered consisting of one oxygen and two carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 47]    47The cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos
 This subclass is indented under subclass 2.  Compounds in which the cylopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 48]    48Hetero ring is one of the cyclos of the polycyclo ring system
 This subclass is indented under subclass 47.  Compounds wherein a hetero ring is one 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 540 subclass 49]    49The hetero ring contains nitrogen
 This subclass is indented under subclass 48.  Compounds in which the hetero ring contains nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 50]    50Plural nitrogens in the hetero ring
 This subclass is indented under subclass 49.  Compounds in which the hetero ring contains at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 51]    51The hetero ring is five-membered
 This subclass is indented under subclass 50.  Compounds in which the hetero ring is five-membered.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 52]    52The hetero ring consists of two nitrogens and three carbons and is ortho fused to the A ring
 This subclass is indented under subclass 51.  Compounds wherein the hetero ring consists of two nitrogens and three carbons and is ortho-fused to the A ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 53]    53Having -C(=X)-, wherein X is chalcogen, bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 52.  Compounds in which -C- wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 54]    54The hetero ring consists of two nitrogens and three carbons and is ortho fused to the D ring
 This subclass is indented under subclass 51.  Compounds wherein the hetero ring consists of two nitrogens and three carbons and is ortho-fused to the D ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 55]    55Chalcogen in the hetero ring
 This subclass is indented under subclass 49.  Compounds in which the hetero ring contains chalcogen (i.e., oxygen, sulfur, selenium or tellurium) in addition to the nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 56]    56The hetero ring is five-membered
 This subclass is indented under subclass 55.  Compounds in which the hetero ring is five-membered.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 57]    57The hetero ring is ortho-fused to the A ring
 This subclass is indented under subclass 56.  Compounds in which the hetero ring is ortho-fused to the A ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 58]    58The hetero ring is five-membered
 This subclass is indented under subclass 49.  Compounds wherein the hetero ring is five-membered.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 59]    59The hetero ring contains sulfur
 This subclass is indented under subclass 48.  Compounds wherein the hetero ring contains sulfur.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 60]    60The hetero ring is a cyclic anhydride (i.e., containing -C(=X)-O-C(=Y)- as part of the ring, wherein X and Y are chalcogen; e.g., 5,8-maleic anhydride adduct of 5,7,9(11)-pregnatrien-3,20-di-one, etc.)
 This subclass is indented under subclass 48.  Compounds in which - - O - -, wherein X and Y may be the same or diverse chalogens (i.e., oxygen, sulfur, selenium or tellurium), is part of the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 61]    61The hetero ring contains plural oxygens
 This subclass is indented under subclass 48.  Compounds wherein the hetero ring contains at least two oxygens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 62]    62Two 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 61.  Compounds wherein (a) at least three ring members of one cyclo are ring members of an additional cyclo or (b) a ring carbon is a member of three of the cyclos in the polycyclo ring system (e.g., bridged or peri-fused, etc.).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 63]    63The hetero ring is ortho-fused to the D ring
 This subclass is indented under subclass 61.  Compounds wherein the hetero ring is ortho-fused to the D ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 64]    64At least six cyclos in the polycyclo ring system
 This subclass is indented under subclass 63.  Compounds wherein the polycyclo ring system contains at least six cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 65]    65Nitrogen or acyclic chalcogen bonded directly to the hetero ring (e.g., cyclic carbonates, etc.)
 This subclass is indented under subclass 63.  Compounds wherein nitrogen or acyclic 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:

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[List of Patents for class 540 subclass 66]    66The A ring is a benzene ring
 This subclass is indented under subclass 63.  Compounds in which the A ring of the cyclopentanohydrophenanthrene ring system contains three alternating double bonds (i.e., is a benzene ring).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 67]    67Sulfur or nitrogen attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding
 This subclass is indented under subclass 63.  Compounds in which sulfur or nitrogen is attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 68]    68Halogen attached indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding
 This subclass is indented under subclass 63.  Compounds in which halogen is attached indirectly to cyclopentanohydrophenanthrene 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 540 subclass 69]    69Halogen bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 63.  Compounds in which halogen is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 70]    70Oxygen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 69.  Compounds in which oxygen is bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 71]    71Oxygen attached directly to the B ring or indirectly to the A or B ring by acyclic nonionic bonding
 This subclass is indented under subclass 63.  Compounds in which oxygen is either (a) attached directly to the B ring or (b) attached indirectly to the A or B ring by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 72]    72The hetero ring is a lactone (i.e., containing -C(=X)-O- as part of the ring, wherein X is chalcogen)
 This subclass is indented under subclass 48.  Compounds in which - - O -, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is part of the hetero ring (i.e., a lactone ring).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 73]    73The lactone ring shares at least three ring members with one other cyclo of the polycylo ring system (i.e., bridged)
 This subclass is indented under subclass 72.  Compounds wherein the lactone ring shares at least three ring members with an additional cyclo of the polycyclo ring system (i.e., bridged).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 74]    74The lactone ring shares the 11,12,13-positions of the cyclopentanohydrophenanthrene ring system (e.g., 11, 18-lactones, etc.)
 This subclass is indented under subclass 73.  Compounds wherein the lactone ring shares the 11, 12, 13-positions of the cyclopentanohydrophenanthrene ring system (i.e., C ring bridge).
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 75]    75The lactone ring shares a ring carbon with two other cyclos of the polycyclo ring system (e.g., peri-fused, etc.)
 This subclass is indented under subclass 72.  Compounds wherein the lactone ring shares a ring carbon with two other 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 540 subclass 76]    76The hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.)
 This subclass is indented under subclass 48.  Compounds in which the hetero ring is three-membered consisting of one oxygen and two carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 77]    77The polycyclo ring system contains plural oxirane rings
 This subclass is indented under subclass 76.  Compounds in which at least two oxirane rings are cyclos of the polycyclo ring system.
(1) Note. An example of a compound provided is:

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[List of Patents for class 540 subclass 78]    78The hetero ring shares the 1,2-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 76.  Compounds in which the hetero ring is ortho-fused to the A ring of the cyclopentanohydrophenanthrene ring system at the 1,2-positions.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 79]    79The hetero ring shares the 4,5-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 76.  Compounds in which the hetero ring is ortho-fused to the A ring of the cyclopentanohydrophenanthrene ring system at the 4,5-positions.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 80]    80The hetero ring shares the 5,6-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 76.  Compounds in which the hetero ring is ortho-fused to the B ring of the cylopentanohydrophenanthrene ring system at the r6-positions.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 81]    81The hetero ring shares the 6,7-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 76.  Compounds in which the hetero ring is ortho-fused to the B ring of the cyclopentanohydrophenanthrene ring system at the 6,7-positions.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 82]    82The hetero ring shares the 11,12-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 76.  Compounds in which the hetero ring is ortho-fused to the C ring of the cyclopentanohydrophenanthrene ring system at the 11, 12-positions.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 83]    83The hetero ring shares the 14,15-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 76.  Compounds in which the hetero ring is ortho-fused to the D ring of the cyclopentanohydrophenanthrene ring system at the 14, 15-positions.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 84]    84The hetero ring shares the 16,17-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 76.  Compounds in which the hetero ring is ortho-fused to the D ring of the cyclopentanohydrophenanthrene ring system at the 16, 17-positions.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 85]    85Halogen bonded directly to the cyclopentanohydrophenanthrene ring system
 Compounds under subclass in 84 which halogen is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided herein is:

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[List of Patents for class 540 subclass 86]    86Saturated A ring
 This subclass is indented under subclass 84.  Compounds wherein the A ring is completely saturated; i.e., contains nor shares any double bonds between its ring members.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 87]    87The hetero ring shares the 9,11-positions of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 76.  Compounds in which the hetero ring is ortho-fused to the C ring of the cyclopentanohydrophenanthrene ring system at the 9,11-positions.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 88]    88Halogen bonded directly to the cyclopentanohydrophenanthrene ring system
 Compounds under subclass in 87 which halgoen is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 89]    89Having -C(=X)-, wherein X is chalcogen, bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 87.  Compounds in which - C -, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 90]    90The hetero ring shares at least three ring members with one other cyclo of the polycyclo ring system (i.e., bridged)
 This subclass is indented under subclass 48.  Compounds wherein the hetero ring shares at least three ring members with one other cyclo of the polycyclo ring system (i.e., bridged).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 91]    91Bridge consisting of oxygen and carbon between the 6- and 10-positions of the cyclopentanohydrophenanthrene ring system (e.g., 6,19-oxido steroids, etc.)
 This subclass is indented under subclass 90.  Compounds wherein the bridge consists of oxygen and carbon and links the 6 - and 10-positions of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 92]    92Bridge consisting of oxygen and carbon between the 11- and 13-positions of the cyclopentanohydrophenanthrene ring system (e.g., 11,18-oxido steroids, etc.)
 This subclass is indented under subclass 90.  Compounds wherein the bridge consists of oxygen and carbon links the 11- and 13-positions of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 93]    93The hetero ring shares a ring carbon with two other cyclos of the polycyclo ring system (e.g., peri-fused, etc.)
 This subclass is indented under subclass 48.  Compounds wherein the hetero ring shares a ring carbon with two other 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 540 subclass 94]    94Hetero ring attached directly to the cyclopentanohydrophenanthrene ring system by nonionic bonding
 This subclass is indented under subclass 2.  Compounds in which a hetero ring is attached directly to the cyclopentanohydrophenanthrene 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 540 subclass 95]    95The hetero ring contains nitrogen
 This subclass is indented under subclass 94.  Compounds wherein the hetero ring contains nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 96]    96Plural nitrogen containing hetero rings bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 95.  Compounds wherein at least two nitrogens containing hetero rings are bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 97]    97The hetero ring is bonded directly at the 3-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 95.  Compounds in which the hetero ring is bonded directly at the 3-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 98]    98The A ring is a benzene ring
 This subclass is indented under subclass 97.  Compounds in which the A ring of the cyclopentanohydrophenanthrene ring system contains three alternating double bonds (i.e., is a benzene ring).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 99]    99Halogen bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 97.  Compounds in which halogen is bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 100]    100The hetero ring contains plural chalcogens
 This subclass is indented under subclass 94.  Compounds in which the hetero ring contains at least two chalogens (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 540 subclass 101]    101The hetero ring and acyclic chalcogen are both bonded directly at the 17 position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 100.  Compounds wherein both the hetero ring and acyclic chalcogen (i.e., oxygen, sulfur, selenium or tellurium) are bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 102]    102The hetero ring contains -C(=X)-O-, wherein X is chalcogen, as part of the ring (e.g., lactones, etc.)
 This subclass is indented under subclass 94.  Compounds in which - - O -, wherein is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is part of the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 103]    103Additional chalcogen, cyano, or -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring
 This subclass is indented under subclass 102.  Compounds in which - CN, - -, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), or additional chalcogen is bonded directly to the hetero ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 104]    104Nitrogen or sulfur attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding
 This subclass is indented under subclass 102.  Compounds in which nitrogen or sulfur is attached directly or indirectly to the cyclopentanohydrophenanthrene 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 540 subclass 105]    105Chalcogen bonded directly at the 14-position of the cyclopentanohydrophenanthrene ring system or double bond in the D ring (e.g., cardenolides, etc.)
 This subclass is indented under subclass 102.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly at the 14-position of the cyclopentanohydrophenanthrene ring system or the D ring of the cyclopentanohydrophenanthrene ring system contains a double bond.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 106]    106Nitrogen attached directly to the cyclopentanohydrophenanthrene ring system by nonionic bonding
 This subclass is indented under subclass 2.  Compounds wherein nitrogen is attached directly to the cyclopentanohydrophenanthrene 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 540 subclass 107]    107Nitrogen containing hetero ring attached indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding
 This subclass is indented under subclass 2.  Compounds in which a nitrogen containing hetero ring is attached indirectly to the cyclopentanohydrophenanthrene 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 540 subclass 108]    108The hetero ring is five-membered and has plural hetero atoms
 This subclass is indented under subclass 107.  Compounds wherein the hetero ring is five-membered and contains at least two hetero atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 109]    109The hetero ring is in the 17-position substituent of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 107.  Compounds wherein the substituent at the 17-position of the cyclopentanohydrophenanthrene ring system contains the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 110]    110The hetero ring is bonded directly to a -C(=X)- group, wherein X is chalcogen
 This subclass is indented under subclass 108.  Compounds in which thehetero ring is bonded directly to a - C - group, wherein 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 540 subclass 111]    111Having -C(=X)-, wherein X is chalcogen, bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 109.  Compounds in which - C -, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 112]    112Chalcogen or nitrogen in chain between the hetero ring and the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 109.  Compounds wherein nitrogen or chalcogen (i.e, oxygen, sulfur, selenium or tellurium) is in the chain between the hetero ring and cyclopentanohydrophenanthrene ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 113]    113Chalcogen in chain between the hetero ring and the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 107.  Compounds in which chalogen (i.e., oxygen, sulfur, selenium or tellurium) is in the chain between the hetero ring and the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 114]    114Oxygen containing hetero ring attached indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding
 This subclass is indented under subclass 2.  Compounds in which an oxygen containing hetero ring is attached indirectly to the cyclopentanohydrophenanthrene 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 540 subclass 115]    115The hetero ring contains -C(=X)-O-, wherein X is chalcogen, as part of the ring (e.g., lactones, etc.)
 This subclass is indented under subclass 114.  Compounds wherein - - O -, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is part of the hetero ring.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 116]    116Additional hetero atom in the oxygen containing hetero ring
 This subclass is indented under subclass 114.  Compounds wherein the oxygen containing hetero ring contains an additional hetero atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 117]    117The A ring is a benzene ring
 This subclass is indented under subclass 114.  Compounds in which the A ring of the cyclopentanohydrophenanthrene ring system contains three alternating double bonds (i.e., is a benzene ring).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 118]    118The hetero ring is bonded directly to chalcogen which is bonded directly to the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 114.  Compounds wherein the hetero ring is bonded directly to chalcogen (i.e., oxygen, sulfur, selenium or tellurium), which chalcogen is also bonded directly to the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 119]    119The chalcogen is bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system
 This subclass is indented under subclass 118.  Compounds in which the chalcogen is bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 120]    120Chalcogen attached indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding
 This subclass is indented under subclass 2.  Compounds in which chalcogen (i.e., oxygen. sulfur, selenium or tellurium) is attached indirectly to the cyclopentanohydrophenanthrene 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 540 subclass 121]    121Azaporphyrins
 This subclass is indented under subclass 1.  Compounds characterized by the following basic structure, illustrated below, which may contain double bonds between ring members and wherein X is nitrogen or carbon, at least one X is nitrogen.

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

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[List of Patents for class 540 subclass 122]    122Phthalocyanines
 This subclass is indented under subclass 121.  Compounds which have the following basic structure (phthalocyanine ring system) wherein substitution may be made for hydrogen only:

Image 1 for class 540 subclass 122

SEE OR SEARCH THIS CLASS, SUBCLASS:

121,for hydrogenated phthalocyanines.
  
[List of Patents for class 540 subclass 123]    123Hetero ring attached directly or indirectly to the phthalocyanine ring system by nonionic bonding
 This subclass is indented under subclass 122.  Compounds wherein an additional hetero ring is attached directly or indirectly to the phthalocyanine ring system by nonionic bonding.
(1) Note. Examples of compounds provided for herein are: poly (copper phthalocyanine (see structure below) wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 124]    124The hetero ring is six-membered having nitrogen as a ring member
 This subclass is indented under subclass 123.  Compounds in which the hetero ring is six-membered and contains nitrogen as a ring member.
(1) Note. An example of a compound provided for herein is seen in the structure below,wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 125]    125Plural hetero atoms in the six-membered hetero ring
 This subclass is indented under subclass 124.  Compounds wherein the hetero ring contains at least two hetero atoms.
(1) Note. An example of a compound provided for herein is in the structure below, wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 126]    126Triazines (including hydrogenated)
 This subclass is indented under subclass 125.  Compounds in which the hetero ring consists of three nitrogens and three carbons.
(1) Note. The structure below is an example of a compound provided for herein wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 127]    127The hetero ring is five-membered having plural hetero atoms, at least one of which is nitrogen
 This subclass is indented under subclass 123.  Compounds in which the hetero ring is five-membered and has plural hetero atoms, at least one of which is nitrogen.
(1) Note. The structure below is an example of a compound provided for herein, wherein NiPc is a nickel phthalocyanine radical.

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[List of Patents for class 540 subclass 128]    128Boron, germanium, phosphorus or silicon containing
 This subclass is indented under subclass 122.  Compounds which contain boron, germanium, phosphorus or silicon.
  
[List of Patents for class 540 subclass 129]    129Having -C(=X)-, wherein X is chalcogen, bonded directly to ring carbon of the phthalocyanine ring system (e.g., tetracarboxy copper phthalocyanine, etc.)
 This subclass is indented under subclass 122.  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 phthalocyanine ring system.
(1) Note. The structure below is an example of a compound provided for herein, wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 130]    130Having -C(=X)-, wherein X is chalcogen, attached indirectly to ring carbon of the phthalocyanine ring system by nonionic bonding (e.g., phthalocyanine acetic acids, etc.)
 This subclass is indented under subclass 122.  Compounds wherein a - - group, in which X is a chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is attached indirectly to a ring carbon of the phthalocyanine ring system by nonionic bonding.
(1) Note. The structure below is an example of a compound provided for herein, wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 131]    131Sulfonyl bonded directly to ring carbon of the phthalocyanine ring system
 This subclass is indented under subclass 122.  Compounds wherein- - is attached directly to a ring carbon of the phthalocyanine ring system.
(1) Note. The structure below is an example of a compound provided herein, wherein CoPc is a cobalt phthalocyanine radical.:

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[List of Patents for class 540 subclass 132]    132Chalcogen bonded directly to the sulfonyl group
 This subclass is indented under subclass 131.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the - - group.
(1) Note. The structure below is an example of a compound provided for herein, wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 133]    133Nitrogen bonded directly to the sulfonyl group
 This subclass is indented under subclass 131.  Compounds where nitrogen is bonded directly to the - - group.
(1) Note. The structure below is an example of a compound provided for herein, wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 134]    134Additional nitrogen in the sulfonyl containing substituent
 This subclass is indented under subclass 133.  Compounds wherein the sulfonyl containing substituent contains an additional nitrogen atom.
(1) Note. The structure below is an example of a compound provided for herein, wherein NiPc is a nickel phthalocyanine radical.

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[List of Patents for class 540 subclass 135]    135Nitrogen attached indirectly to ring carbon of the phthalocyanine ring system by acyclic nonionic bonding
 This subclass is indented under subclass 122.  Compounds wherein nitrogen is attached indirectly to ring carbon of the phthalocyanine ring system by acyclic nonionic bonding.
(1) Note. The structure below is an example of a compound provided for herein, wherein CuPc is a copper phthalocyanine radical.

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[List of Patents for class 540 subclass 136]    136Halogen bonded directly to ring carbon of the phthalocyanine ring system
 This subclass is indented under subclass 122.  Compounds wherein halogen (i.e., fluorine, chlorine, bromine, iodine, or astatine) is bonded directly ring carbon of the phthalocyanine ring system.
  
[List of Patents for class 540 subclass 137]    137At least eight halogens bonded directly to ring carbons of the phthalocyanine ring system
 This subclass is indented under subclass 136.  Compounds wherein at least eight halogen (i.e., fluorine, chlorine, bromine, iodine, or astatine) atoms are bonded directly to ring carbons of the phthalocyanine ring system.
  
[List of Patents for class 540 subclass 138]    138Processes of halogenating the phthalocyanine ring system
 This subclass is indented under subclass 136.  Processes for halogenating a ring carbon of the phthalocyanine ring system.
  
[List of Patents for class 540 subclass 139]    139Metal containing
 This subclass is indented under subclass 122.  Compounds wherein the phthalocyanine ring system is bonded to a metal.
(1) Note. An example of a compound provided for herein is: Magnesium phthalocyanine (below)

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[List of Patents for class 540 subclass 140]    140Heavy metal or aluminum containing
 This subclass is indented under subclass 139.  Compounds wherein the metal is aluminum or a metal having a specific gravity greater than 4.
  
[List of Patents for class 540 subclass 141]    141Specified crystalline form or processes of milling (e.g., alpha crystalline form, ball milling, acid milling, etc.)
 This subclass is indented under subclass 140.  Compounds which are in a specified crystalline form, or processes for milling heavy metal or aluminum containing phthalocyanines.
(1) Note. The milling processes usually are for the purpose of obtaining certain crystalline forms.
  
[List of Patents for class 540 subclass 142]    142Processes of forming the phthalocyanine ring system
 This subclass is indented under subclass 140.  Processes which include the formation of the phthalocyanine ring system.
  
[List of Patents for class 540 subclass 143]    143From reactant which contains plural cyano groups (e.g., preparing from phthalonitrile, etc.)
 This subclass is indented under subclass 142.  Processes wherein the phthalocyanine ring system is prepared from a reactant which contains plural cyano groups.
  
[List of Patents for class 540 subclass 144]    144From reactant which contains plural carbonyl groups (e.g., preparing from phthalic anhydride, etc.)
 This subclass is indented under subclass 142.  Processes wherein the phthalocyanine ring system is prepared from a reactant which contains plural carbonyl groups.
  
[List of Patents for class 540 subclass 145]    145Porphyrins (including hydrogenated; e.g., chlorophyll, etc.)
 This subclass is indented under subclass 1.  Compounds which have the following basic structure, which may contain double bonds between ring members:

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(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 200]    200Hetero ring is four-membered containing nitrogen and having chalcogen double bonded directly to a ring carbon which is adjacent to the ring nitrogen
 This subclass is indented under subclass 1.  Compounds in which the hetero ring is four-membered, contains nitrogen and has chalcogen (i.e., oxygen, sulfur, selenium or tellurium) double bonded directly to a ring carbon 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 540 subclass 201]    201Heavy metal containing
 This subclass is indented under subclass 200.  Compounds which include a metal having a specific gravity greater than four.
(1) Note. Arsenic is considered a heavy metal.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 202]    202Plural hetero atoms in the hetero ring
 This subclass is indented under subclass 200.  Compounds wherein the hetero ring contains at least two hetero atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 203]    203Polycyclo ring system containing the hetero ring as one of the cyclos
 This subclass is indented under subclass 200.  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:

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[List of Patents for class 540 subclass 204]    204The ring nitrogen is shared by a ring containing at least seven members
 This subclass is indented under subclass 203.  Compounds in which the ring nitrogen is shared by a ring containing at least seven members.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 205]    205The ring nitrogen is shared by a six-membered ring
 This subclass is indented under subclass 203.  Compounds wherein the ring nitrogen is shared by a six-membered ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 214]    214The six-membered ring contains sulfur
 This subclass is indented under subclass 205.  Compounds wherein the six-membered ring contains sulfur.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 215]    2151-thia-5-aza-bicyclo(4.2.0)octane (including unsaturated; e.g., cepham, etc.)
 This subclass is indented under subclass 214.  Compounds in which the polycyclo ring system has the following basic structure; which may contain double bonds between ring members:

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(1) Note. The Ring Index uses a different system for numbering the ring members. However, in the indents hereunder which refer to positions, the numbers shown in the definition are employed.
  
[List of Patents for class 540 subclass 216]    216The 1-thia-5-aza-bicyclo(4.2.0)oct-ane is part of a polycyclo ring system having at least three cyclos
 This subclass is indented under subclass 215.  Compounds having a polycyclo ring system which contains at least three cyclos, two of which are the cepham or cephem ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 217]    217Double bond between the 2,3-positions of the bicyclo ring system (e.g., 2 cephem, etc.)
 This subclass is indented under subclass 215.  Compounds in which there is a double bond between the carbon atoms in the 2 - and 3 - positions of the ring system; i.e.,

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[List of Patents for class 540 subclass 218]    218Ring expansion to produce the bicyclo ring system
 This subclass is indented under subclass 215.  Processes in which a cepham or cephem ring system is produced by the enlargement of the corresponding thiazole containing ring system: (i.e., the structure below) in which the rings may contain double bonds.

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[List of Patents for class 540 subclass 219]    2197-amino cephalosporanic acid per se or salt thereof (i.e., 7-ACA or salt thereof)
 This subclass is indented under subclass 215.  Compounds which have the following structure (Fig. 1) or salts thereof.

FIGURE 1.

FIGURE 1.

  
[List of Patents for class 540 subclass 220]    220Purification or recovery
 This subclass is indented under subclass 215.  Processes wherein the cepham or cephem containing compound is separated from impurities or from the reaction medium.
  
[List of Patents for class 540 subclass 221]    2217,7-disubstituted
 This subclass is indented under subclass 215.  Compounds wherein both hydrogen atoms bonded to the carbon atom in the 7-position of the cepham or cephem ring system have been replaced by substituents.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 222]    222Additional hetero ring containing
 This subclass is indented under subclass 215.  Compounds which contain an additional hetero ring.

SEE OR SEARCH THIS CLASS, SUBCLASS:

216,for compounds in which a heterocyclic ring is fused or bridged to the cepham or cephem ring system.
  
[List of Patents for class 540 subclass 223]    2232- or 4-position substituent contains hetero ring
 This subclass is indented under subclass 222.  Compounds in which a substituent on either the 2 - or 4 - carbon atom of the cepham or cephem ring system contains or consists of a hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 224]    2243-position substituent contains a pyridine ring (e.g., quinoline, thienopyridine, lutidines, etc.)
 This subclass is indented under subclass 222.  Compounds in which a substituent on the 3-position substituent contains a pyridine ring (e.g., quinoline, thienopyridine, lutidines, etc.).
  
[List of Patents for class 540 subclass 225]    2257-position substituent contains hetero ring
 This subclass is indented under subclass 224.  Compounds in which a substituent on the 7-position of the cepham or cephem ring system contains or consists of a hetero ring.
(1) Note. The structure below is an example of a compound provided for herein wherein X is an anion.

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[List of Patents for class 540 subclass 226]    2263-position substituent contains sulfur
 This subclass is indented under subclass 22.  Compounds which have sulfur or a sulfur containing group attached to the 3-position of the cepham or cephem ring system.
  
[List of Patents for class 540 subclass 227]    2277-position substituent contains hetero ring
 This subclass is indented under subclass 226.  Compounds in which a sustituent on the 7-position of the cepham or cephem ring system contains or consists of a hetero ring.
  
[List of Patents for class 540 subclass 228]    228Alkyl, hydroxyalkyl, alkoxyalkyl or alkanoyloxyalkyl bonded directly to 3 position
 This subclass is indented under subclass 22.  Compounds in which have -alkyl, -alkyl-OH, -alkyl-O-alkyl, or -alkyl-O--alkyl bonded directly at the 3-position of the cepham or cephem ring system.
(1) Note. An example of the type of compound provided for herein is:

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[List of Patents for class 540 subclass 229]    229Sulfur containing substituent
 This subclass is indented under subclass 215.  Compounds in which include sulfur bonded directly or indirectly to the cepham or cephem ring system.
(1) Note. This subclass provides for salts containing sulfur, such as that formed by reacting Cephalosporin C with sodium thiosulfate, in addition to compounds in which sulfur is attached by nonionic bonding.

SEE OR SEARCH THIS CLASS, SUBCLASS:

226,for compounds which contain a cepham or cephem ring system having a sulfur containing substituent and a hetero ring containing substituent.
  
[List of Patents for class 540 subclass 230]    230Alkyl, hydroxyalkyl, alkoxyalkyl or alkanoyloxyalkyl bonded directly to 3 position
 This subclass is indented under subclass 215.  Compounds which have -alkyl, -alkyl-OH, -alkyl-O-alkyl, or -alkyl-O--alkyl bonded directly to the 3-position of the cepham or cephem ring system.
  
[List of Patents for class 540 subclass 300]    300The six-membered ring contains oxygen
 This subclass is indented under subclass 205.  Compounds wherein the six-membered ring contains oxygen.
  
[List of Patents for class 540 subclass 301]    3011-oxa-5-aza-bicyclo(4.2.0)octane (including unsaturated)
 This subclass is indented under subclass 300.  Compounds in which the polycyclo ring system has the following basic structure, which may contain double bonds between ring members:

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(1) Note. The above ring system may be referred to as 1-oxa-5-aza-bicyclo [4.2.0] octane, 5-oxa-1-aza-bicyclo [4.20] octane, etc. However, compounds having ring systems with this configuration are classified in this subclass regardless how they are named.
  
[List of Patents for class 540 subclass 302]    302The ring nitrogen is shared by a five-membered ring
 This subclass is indented under subclass 203.  Compounds wherein the ring nitrogen is shared by a five-membered ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 303]    303The five-membered ring contains an additional hetero atom
 This subclass is indented under subclass 302.  Compounds wherein the five-membered ring contains an additional hetero atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 304]    3041-thia-4-aza-bicyclo(3.2.0)hep-tane (including unsaturated; e.g., penam, etc.)
 This subclass is indented under subclass 303.  Compounds in which the polycylo ring system has the following basic structure, which may contain double bonds between ring members:

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(1) Note. The Ring Index uses a different system for numbering the ring members. However, in this and indented subclasses which refer to positions, the numbers shown in the definition are employed.
(2) Note. This ring system is referred to as penam or penem (when unsaturated).
(3) Note. An example of a compound provided for herein is:

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SEE OR SEARCH CLASS:

424Drug, Bio-Affecting and Body Treating Compositions,   subclass 114 and 405+ for a medical composition including a penicillin.
435Chemistry: Molecular Biology and Microbiology,   subclasses 43+ for processes of producing penicillin by use of micro-organisms, tissue cell culture or enzymes.
514Drug, Bio-Affecting and Body Treating Compositions,   subclasses 192+ for a medical composition including a penicillin.
  
[List of Patents for class 540 subclass 305]    305The 1-thia-4-aza-bicyclo(3.2.0)hep-tane is part of a polycyclo ring system having at least three cyclos
 This subclass is indented under subclass 304.  Compounds in which the bicyclo ring system is part of a polycyclo ring system containing at least three cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 306]    306Plural 1-thia-4-aza-bicyclo(3.2.0)hep-tane ring systems attached directly or indirectly to each other by nonionic bonding
 This subclass is indented under subclass 304.  Compound in which at least two of the bicyclo ring systems are attached directly or indirectly to each other by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 307]    307Spiro
 This subclass is indented under subclass 304.  Compounds which contain a spiro ring system.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 308]    308The 6-position substituent contains phosphorus attached directly or indirectly to the bicyclo ring system by nonionic bonding
 This subclass is indented under subclass 304.  Compounds wherein the substituent at the 6-position of the bicyclo ring system contains phosphorus which is attached directly or indirectly to the 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 540 subclass 309]    309Nitrogen containing hetero ring attached directly at the 3-position of the bicyclo ring system
 This subclass is indented under subclass 304.  Compounds in which nitrogen containing hetero ring is attached directly at the 3-position 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 540 subclass 310]    310Having -C(=X)-, wherein X is chalcogen, bonded directly at the 3-position of the bicyclo ring system
 This subclass is indented under subclass 304.  Compounds in which - C -, wherein X is chalogen (i.e., oxygen, sulfur, selenium or tellurium), is bonded directly at the 3-position 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 540 subclass 311]    311Nitrogen or hydrogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 310.  Compounds in which nitrogen or hydrogen is bonded directly to

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

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[List of Patents for class 540 subclass 312]    312Nitrogen bonded directly at the 6-position of the bicyclo ring system
 This subclass is indented under subclass 310.  Compounds in which nitrogen is bonded directly at the 6-position of the bicyclo ring system.
(1) Note. 6-APA and esters thereof are provided for in this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 313]    313The 2-position substituent contains chalcogen, nitrogen or halogen
 This subclass is indented under subclass 312.  Compounds wherein the substituent at the 2-position of the bicyclo ring system contains chalcogen, nitrogen or halogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 314]    314Having -C(=X)-, wherein X is chalcogen, single bonded directly to the nitrogen (e.g., penicillin F, etc.)
 This subclass is indented under subclass 312.  Compounds in which - -, wherein X is chalcogen (i.e, oxygen, sulfur, selenium or tellurium), is single bonded directly to the nitrogen at the 6-position; i.e., - - N
(1) Note. Penicillin K, F, dihydro, F, S, and O are provided for in this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 315]    315Processes utilizing penam containing compound
 This subclass is indented under subclass 314.  Processes which utilize penam containing compounds.
  
[List of Patents for class 540 subclass 316]    316Introduction of -C(=X)- group, wherein X is chalcogen, onto nitrogen (e.g., carboxamide formation, etc.)
 This subclass is indented under subclass 315.  Processes for the formation of - - N, group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium).
  
[List of Patents for class 540 subclass 317]    317Boron, silicon or phosphorus containing reactant
 This subclass is indented under subclass 316.  Processes utilizing a boron, silicon or phosphorus containing reactant.
  
[List of Patents for class 540 subclass 318]    318Esterification of the 3-position -C(=X)X- group, wherein the X's may be the same or diverse chalcogens
 This subclass is indented under subclass 315.  Processes whereby the 3-position - - X - group, wherein the X"s may be the same or diverse chalcogens, is esterified.
  
[List of Patents for class 540 subclass 319]    319Sulfur-oxidation, epimerization, 6-alkoxylation, de-esterification or reduction
 This subclass is indented under subclass 315.  Processes whereby the penam compound undergoes oxidation of sulfur, epimerization, de-esterification, reduction or alkoxyation at the 6-position.
  
[List of Patents for class 540 subclass 320]    320Formation of solvate or anhydrous forms, or special crystalline forms
 This subclass is indented under subclass 315.  Processes for the formation of solvate or anhydrous forms, or the formation of special crystalline forms.
(1) Note. Included herein are those processes which effect (a) the formation of hydrate adducts and (b) the modification from the usual crystalline form of a penam compound to another crystalline form.
  
[List of Patents for class 540 subclass 321]    321Conversion of amine salts to metal salts
 This subclass is indented under subclass 315.  Processes whereby amine salts or penam compounds are converted into metal salts.
  
[List of Patents for class 540 subclass 322]    322Purification utilizing solid adsorbent
 This subclass is indented under subclass 315.  Process whereby the penam compound is separated from impurities or from the reaction mixture in an atmosphere which utilizes a solid adsorbant.
  
[List of Patents for class 540 subclass 323]    323Base salt formation of 3-position -COOH group
 This subclass is indented under subclass 315.  Process whereby a base salt of penam compound is formed.
(1) Note. The penam compound represents the acidic moiety in the salt formation; therefore, included herein are those processes directed to the preparation of penicillin salts, such as, the triethyl amine salt of penicllin G, the sodium salt of penicillin X, etc.
  
[List of Patents for class 540 subclass 324]    324Extracting solid from solution
 This subclass is indented under subclass 315.  Processes wherein a solids extracted from solution.
(1) Note. Included herein are those processes wherein penicillin as recovered from aqueous liquors.
  
[List of Patents for class 540 subclass 325]    325The nitrogen is part of a hetero ring
 This subclass is indented under subclass 314.  Compounds in which the nitrogen at the 6-position is part of a hetero ring.
(1) Note. Hetacillin and Hetaamoxicillin are provided for in this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 326]    326Chalcogen, -C(=X)-, wherein X is chalcogen, or additional nitrogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 314.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium), - - , wherein X is chalcogen, or additional nitrogen is bonded directly to the - - group which is bonded directly to the 6-position nitrogen; i.e.,

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

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[List of Patents for class 540 subclass 327]    327Hetero ring or ring system bonded directly to the -C(=X)- group
 This subclass is indented under subclass 314.  Compounds wherein a hetero ring or a polycylo ring system which contains a hetero ring as one of the cyclos is bonded directly to the - - group.
(1) Note. Oxacillin, Floxacillin, Dicloxacillin, Cloxacillin and Flucloxacillin are provided for in this subclass.
(2) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 328]    328Nitrogen containing ring or ring system attached by carbon or acyclic carbon chain to the -C(=X)- group
 This subclass is indented under subclass 314.  Compounds wherein a nitrogen containing hetero ring or a polycyclo ring system having a nitrogen containing ring as one of the cyclos is attached by carbon or an acyclic carbon chain to the - - group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 329]    329Polycyclo heterocyclic ring system in 6-position substituent
 This subclass is indented under subclass 314.  Compounds in which a polycyclo heterocyclic ring system is in the 6-position substituent.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 330]    330The polycyclo ring system is attached directly to a -C(=X)-NH- group, wherein X is chalcogen and substitution may be made for hydrogen only, which group is between the polycyclo ring system and the 1-thia-4-aza bicyclo(3.2.0)hep-tane
 This subclass is indented under subclass 329.  Compounds wherein the polycyclo ring system is attached directly to a - - NH - group, which group is between the polycyclo ring system and the penam ring system; X is 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:

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333,for compounds which contain monocyclic hetero rings in the 6-position substituent.
  
[List of Patents for class 540 subclass 331]    331Acyclic nitrogen or azide attached indirectly to the -C(=X)- group by acyclic nonionic bonding
 This subclass is indented under subclass 314.  Compounds in which acyclic nitrogen or azide is in the 6-position substituent attached indirectly the the - - group by acyclic nonionic bonding.
(1) Note. Metampicillin and Azidocillin are provided for in this subclass.
(2) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 332]    332Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen
 This subclass is indented under subclass 331.  Compounds in which- C - wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is in the 6-position substituent bonded directly to the nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 333]    333Hetero ring bonded directly to the -C(=X)- group
 This subclass is indented under subclass 332.  Compounds in which a hetero ring is in the 6-position substituent bonded directly to the - - group.
(1) Note. An example of a compound provided for herein is:

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330,for compounds which contain polycyclo heterocyclic rings in the 6-position substituent.
  
[List of Patents for class 540 subclass 334]    334Chalcogen, additional nitrogen or additional -C(=X)- bonded directly to the -C(=X)- group
 This subclass is indented under subclass 332.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium or tellurium), additional nitrogen or an additional - - , wherein X is chalcogen, is in the 6-position substituent bonded (i.e., - X - - - , - - - or - - - - indirect the to - - - which is bonded directly at the 6- position.)
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 335]    335Additional acyclic nitrogen or acyclic chalcogen in the 6-position substituent
 This subclass is indented under subclass 331.  Compounds wherein an additional acyclic nitrogen or acyclic chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is in the 6-position substituent attached indirectly to the - - group by nonionic bonding.
(1) Note. Amoxicillin is provided for in this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 336]    336The -C(=X)- group, an unsubstituted benzene ring and -NHH bonded directly to the same carbon atom (e.g., ampicillin, etc.)
 This subclass is indented under subclass 331.  Compounds wherein the - C - group, an unsubstituted benzene ring and the acyclic nitrogen, as a - NH2 group, are all bonded directly to the same carbon atom.
(1) Note. Ampicillin and Pivampicillin are provided for in this subclass.
(2) Note. An example of a compound provided for here is:

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[List of Patents for class 540 subclass 337]    337Cycloaliphatic ring in 6-position substituent
 This subclass is indented under subclass 314.  Compounds which contain a cycloaliphatic ring in the 6-position substituent.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 338]    338Benzene or hetero ring in 6-position substituent
 This subclass is indented under subclass 314.  Compounds which contain a benzene ring or a hetero ring in the 6-position substituent.
(1) Note. Carbenicillin is provided for in this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 339]    339The ring is bonded directly to the -C(=X)- group
 This subclass is indented under subclass 338.  Compounds wherein the ring is bonded directly to the - - group.
(1) Note. Nafcillin and Methicillin are provided for in this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 340]    340Having -C(=X)X-, wherein the X's may be the same or diverse chalcogens, in chain between the ring and the -C(=X)- group
 This subclass is indented under subclass 338.  Compounds wherein the chain between the ring and the - - group is a - - X - group, wherein the X"s may be the same or diverse chalcogens, (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 540 subclass 341]    341Chalcogen in the chain between the ring and the -C(=X)- group
 This subclass is indented under subclass 338.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is in the chain between the ring and the - - group.
(1) Note. Penicillin V, Phenethicillin and Propicillin are provided for in this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 342]    342Unsubstituted hydrocarbyl chain between the ring and the -C(=X)- group
 This subclass is indented under subclass 338.  Compounds wherein the ring is bonded directly to a hydrocarbyl chain which chain is bonded directly to the -- group.
(1) Note. Penicillin G, Penicillin X, and Penamecillin are provided for in this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 343]    343Amine addition salts of 3-position -COOH group
 This subclass is indented under subclass 342.  Compounds which are amine addition salts of the 3-position-COOH group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 344]    344Nitrogen containing hetero ring in the cation (i.e., amine moiety)
 This subclass is indented under subclass 343.  Compounds wherein a nitrogen containing hetero ring is in the cation; i.e., the penam compound is in the acid moiety, and the nitrogen containing hetero ring is in the amine moiety.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 345]    345Plural nitrogens in the cation (i.e., amine moiety)
 This subclass is indented under subclass 343.  Compounds wherein at least two nitrogens are in the cation; the penam compound is in the anion.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 346]    346Processes
 This subclass is indented under subclass 312.  Processes for producing, purifying or recovering a compound which contains the 1-thia-4aza-bicyclo[3.2.0]-heptane ring system (penam) having - - bonded directly at the 3-position and nitrogen bonded directly at the 6-position.
  
[List of Patents for class 540 subclass 347]    347Bicyclo ring system which is 1-oxa-4-aza-bicyclo(3.2.0)hep-tane (including unsaturated)
 This subclass is indented under subclass 303.  Compounds containing a bicyclo ring system having the following basic structure, which may contain double bonds between ring members:

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(1) Note. The above ring system may be referred to as 1-oxa-4aza-bicyclo [3.2.0]heptane, 4-oxa-1-aza-bicyclo [3.2.0]heptane, etc. However, compounds having ring systems with this configuration are classified in this and indented subclasses regardless how they are named.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 348]    348Acyclic carbon double bonded directly at the 2-position of the bicyclo ring system
 This subclass is indented under subclass 347.  Compounds in which acyclic carbon is double bonded directly at the 2-position 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 540 subclass 349]    349Chalcogen attached directly by a single bond to the carbon or to an acyclic carbon chain which contains the carbon
 This subclass is indented under subclass 348.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached directly by a single bond to the carbon or to an acyclic carbon chain which contains the carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 350]    350The ring system is 4-aza-bicyclo(3.2.0)heptane (including unsaturated) and has sulfur bonded directly at the 2-position
 This subclass is indented under subclass 302.  Compounds in which the ring system has the following basic structure, which may contain double bonds between ring members, and has sulfur bonded directly at the 2-position:

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(1) Note. The above ring system may be referred to as 4-aza-bicyclo[3.2.0]- heptane, 1-aza-bicyclo[3.2.0]-heptane, etc. However, compounds having ring systems with this configuration are classified in this and indented subclasses regardless how they are named.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 351]    351Thienamycin per se or salt thereof
 This subclass is indented under subclass 350.  Compounds which have the following structure, or salts thereof:

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[List of Patents for class 540 subclass 352]    352Five-membered hetero ring consisting of one nitrogen, one sulfur and three carbons as one of the cyclos of the polycyclo ring system
 This subclass is indented under subclass 203.  Compounds wherein one of the cyclos of the polycyclo ring system is a five-membered hetero ring consisting of one nitrogen, one sulfur and three carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 353]    353Double bond between ring members of the five-membered hetero ring
 This subclass is indented under subclass 352.  Compounds which contain a 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 540 subclass 354]    354Additional chalcogen bonded directly to the hetero ring
 This subclass is indented under subclass 200.  Compounds wherein additional chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the hetero ring.
(1) Note. An example of a compound provided herein is:

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[List of Patents for class 540 subclass 355]    355The additional chalcogen is bonded directly to the ring nitrogen
 This subclass is indented under subclass 354.  Compounds wherein the additional chalcogen is bonded directly to the ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 356]    356The additional chalcogen is double bonded directly to the hetero ring
 This subclass is indented under subclass 354.  Compounds wherein the additional chalcogen is double bonded directly to the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 357]    357Having -C(=X)-, wherein X is chalcogen, bonded directly to the additional chalcogen
 This subclass is indented under subclass 354.  Compounds in which- - wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the additional chalcogem; i.e., -X-- bonded directly to the four-membered hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 358]    358The additional chalcogen is sulfur which is bonded directly to chalcogen
 This subclass is indented under subclass 354.  Compounds wherein the additional chalcogen is sulfur which also 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 540 subclass 359]    359The sulfur is double bonded directly to the chalcogen
 This subclass is indented under subclass 358.  Compounds in which the sulfur is double bonded directly to the additional chalcogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 360]    360Additional carbon bonded directly to the additional chalcogen
 This subclass is indented under subclass 354.  Compounds wherein an additional carbon is bonded directly to the addition chalcogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 361]    361Halogen attached directly at the 4-position of the hetero ring by nonionic bonding
 This subclass is indented under subclass 200.  Compounds wherein halogen is attached directly at the 4-position of the hetero ring by nonionic boinding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 362]    362The 4-position of the hetero ring is unsubstituted or alkyl substituted only
 This subclass is indented under subclass 200.  Compounds in which the 4-position of the hetero ring is either unsubstituted or substituted by alkyl only.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 363]    363Nitrogen bonded directly at the 3-position of the hetero ring
 This subclass is indented under subclass 362.  Compounds in which nitrogen is bonded directly at the 3-position of the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 364]    364Nitrogen bonded directly at the 3-position of the hetero ring
 This subclass is indented under subclass 200.  Compounds in which nitrogen is bonded directly at the 3-position of the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 450]    450The hetero ring contains at least eight members including nitrogen and carbon
 This subclass is indented under subclass 1.  Compounds wherein the hetero ring contains at least eight members and has nitrogen and carbon as ring members.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 451]    451Chalcogen double bonded directly to a ring carbon of the hetero ring which is adjacent to the ring nitrogen (e.g., laurolactam, etc.)
 This subclass is indented under subclass 450.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is double bonded directly to a carbon of the hetero ring which is adjacent to the nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 452]    452Heavy metal, aluminum, boron or silicon containing
 This subclass is indented under subclass 451.  Compounds which include a metal having a specific gravity greater than four, aluminum, boron or silicon.
(1) Note. Arsenic is considered a metal for purposes of this subclass.
  
[List of Patents for class 540 subclass 453]    453Spiro
 This subclass is indented under subclass 451.  Compounds which include a spiro ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 454]    454Chalcogen in the hetero ring
 This subclass is indented under subclass 451.  Compounds wherein the hetero ring contains 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 540 subclass 455]    455Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 454.  Compounds in which the hetero ring is 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 540 subclass 456]    456Two of the cyclos share at least three ring members or a ring member is shared by three of the cyclos (e.g., bridged, peri-fused, etc.)
 This subclass is indented under subclass 455.  Compounds wherein (a) at least three members of one cyclo are members of an additional cyclo in the polycyclo ring system, or (b) one ring member is a member of three of the cyclos in the polycyclo ring system (e.g., bridged, peri-fused, etc.).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 457]    457A five-membered cyclo of the polycyclo ring system consists of four ring carbons and one ring oxygen (e.g., fused rifamycins, etc.)
 This subclass is indented under subclass 456.  Compounds wherein the polycyclo ring system contains a five-membered cyclo which consists of four carbons and one oxygen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 458]    458Tetracyclo ring system which contains the hetero ring as one of the cyclos (e.g., rifamycin S, etc.)
 This subclass is indented under subclass 457.  Compounds in which the polycyclo ring system consists of exactly four rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 459]    459Nitrogen, sulfur or halogen attached directly to the tetracyclo ring system by nonionic bonding
 This subclass is indented under subclass 458.  Compounds in which nitrogen, sulfur or halogen is attached directly to the tetracyclo 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 540 subclass 460]    460Plural nitrogens in the hetero ring
 This subclass is indented under subclass 451.  Compounds in which the hetero ring contains at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 461]    461Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 451.  Compounds wherein the 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 540 subclass 462]    462Oxirane ring is one of the cyclos in the polycyclo ring system (e.g., maytansinol, etc.)
 This subclass is indented under subclass 461.  Compounds wherein one of the cyclos of the polycyclo ring system is three-membered consisting of one oxygen and two carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 463]    463Nitrogen or additional chalcogen attached directly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 451.  Compounds wherein nitrogen or additional chalcogen is attached directly to the 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 540 subclass 464]    464Utilizing oximes, oxime salts, hydroxylamines, hydroxylamine salts or nitrosating agents to form the hetero ring (i.e., formation of the lactam ring)
 This subclass is indented under subclass 451.  Processes which utilize oximes (=NOH), oxime salts (=NO-cation), hedroxylamines (-N-OH), hydroxylamine salts (-N-O-cation) or nitrosating agents to form the lactam ring.
  
[List of Patents for class 540 subclass 465]    465Heavy metal or aluminum containing
 This subclass is indented under subclass 450.  Compounds which include aluminum or a metal having a specific gravity greater that four.
(1) Note. Arsenic is considered a metal for purposes of this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 466]    466Spiro
 This subclass is indented under subclass 450.  Compounds which include a spiro ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 467]    467The hetero ring contains chalcogen
 This subclass is indented under subclass 450.  Compounds in which the hetero ring contains 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 540 subclass 468]    468Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 467.  Compounds in which the hetero ring is 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 540 subclass 469]    469Plural nitrogens in the hetero ring
 This subclass is indented under subclass 468.  Compounds in which the hetero ring contains at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 470]    470The hetero ring contains plural nitrogens
 This subclass is indented under subclass 450.  Compounds in which the hetero ring contains at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 471]    471Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 470.  Compounds in which the hetero ring is 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 540 subclass 472]    472Two of the cyclos share at least three ring members or a ring member is shared by three of the cyclos (e.g., bridged, peri-fused, etc., toxiferin)
 This subclass is indented under subclass 471.  Compounds wherein (a) at least three members of one cycol in the polycyclo ring system, or (b) one ring member is a member of three of the cyclos in the polycyclo ring system (e.g., bridged, perl-fused, etc.).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 473]    473Bicyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 471.  Compounds in which the polycyclo ring system consists of exactly two rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 474]    474The hetero ring contains at least three nitrogens
 This subclass is indented under subclass 470.  Compounds in which the hetero ring contains at least three nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 475]    475Nitro bonded directly to ring nitrogen of the hetero ring (e.g., HMX, etc.)
 This subclass is indented under subclass 474.  Compounds in which nitro (i.e., -NO2) is bonded directly to a ring nitrogen of the hetero ring.
(1) Note. This subclass includes HMX (1,3,5,7-tetranitro-1,3,5,7,- tetraazacycloctane

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[List of Patents for class 540 subclass 476]    476Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 450.  Compounds in which the hetero ring is 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 540 subclass 477]    477Two of the cyclos share at least three ring members or a ring member is shared by three of the cyclos (e.g., bridged, peri-fused, etc.)
 This subclass is indented under subclass 476.  Compounds wherein (a) at least three members of one cyclo are members of an additional cyclo in the polycyclo ring system, or (b) one ring member is a member of three of the cyclos in the polycycol ring system (e.g., bridged, peri-fused, etc.).
(1) Note. examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 478]    478Containing additional heterocyclic polycyclo ring system having plural ring nitrogens (e.g., vinblastine, vincristine, etc.)
 This subclass is indented under subclass 477.  Compounds which contain an additional polycyclo ring system having at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 479]    479Tricyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 476.  Compounds in which the polycyclo ring system consists of exactly three rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 480]    480Additional hetero ring attached directly or indirectly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 450.  Compounds wherein an additional hetero ring is attached directly or indirectly to the 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 540 subclass 481]    481The additional hetero ring is six-membered and contains nitrogen
 This subclass is indented under subclass 480.  Compounds in which the additional hetero ring is six-membered and contains nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 482]    482Chalcogen or nitrogen attached directly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 450.  Compounds in which nitrogen 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:

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[List of Patents for class 540 subclass 483]    483Plural nitrogens attached indirectly to the hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 450.  Compounds in which at least two nitrogens are attached indirectly to the 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 540 subclass 484]    484The hetero ring contains seven members including nitrogen and carbon
 This subclass is indented under subclass 1.  Compounds wherein the hetero ring contains seven members and has nitrogen and carbon as ring members.
  
[List of Patents for class 540 subclass 485]    485Chalcogen double bonded directly to a ring carbon adjacent to the ring nitrogen (e.g., caprolactam, etc.)
 This subclass is indented under subclass 484.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is double bonded directly to one of the ring carbons of the 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 540 subclass 486]    486Heavy metal or aluminum containing
 This subclass is indented under subclass 485.  Compounds which contain aluminum or a metal having a specific gravity greater than four.
(1) Note. Arsenic is considered a metal for the purposes of this subclass.
  
[List of Patents for class 540 subclass 487]    487Silicon or phosphorus attached directly or indirectly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 485.  Compounds in which phosphorus or silicon is attached directly or indirectly to the hetero ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 488]    488Chalcogen in the hetero ring
 This subclass is indented under subclass 485.  Compounds in which the hetero ring contains chalcogen (i.e., oxygen, sulfur, selenium or telluriun).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 489]    489Plural nitrogens in the hetero ring
 This subclass is indented under subclass 488.  Compounds in which the hetero ring contains at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 490]    490Bicyclo ring system having the hetero ring as one of the cyclos
 This subclass is indented under subclass 488.  Compounds wherein the hetero ring is in a polycyclo ring system which contains exactly two cyclos.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 491]    491The chalcogen and the nitrogen are in the 1,5-positions of the bicyclo ring system (e.g., 1,5-benzothiazepinone, etc.)
 This subclass is indented under subclass 490.  Compounds wherein the chalcogen and the nitrogen are in the 1,5-positions of the bicyclo ring system; i.e.,

Image 1 for class 540 subclass 491

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

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[List of Patents for class 540 subclass 492]    492Plural nitrogens in the hetero ring
 This subclass is indented under subclass 485.  Compounds in which the hetero ring contains at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 493]    493Tetracyclo ring system having the hetero ring as one of the cyclos
 This subclass is indented under subclass 492.  Compounds wherein the hetero ring is in a polycyclo ring system which contains exactly four cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 494]    494Nitrogen of the hetero ring is shared by an additional cyclo of the tetracyclo ring system
 This subclass is indented under subclass 493.  Compounds wherein a nitrogen of the hetero ring is a member of two of the cyclos 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 540 subclass 495]    495Tricyclo ring system having the hetero ring as one of the cyclos
 This subclass is indented under subclass 492.  Compounds wherein the hetero ring is in a polycyco ring system which contains exactly three cyclos.
(1) Note. An example of a compound provided for herein is

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[List of Patents for class 540 subclass 496]    496Nitrogen of the hetero ring is shared by an additional cyclo of the tricyclo ring system
 This subclass is indented under subclass 495.  Compounds wherein a nitrogen of the hetero ring is a member of an additional cyclo the the tricyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 497]    497Additional hetero atom in the additional cyclo of the tricyclo ring system
 This subclass is indented under subclass 496.  Compounds in which the additional cyclo of the tricyclo ring system contains an additional hetero atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 498]    498The additional cyclo is five-membered consisting of nitrogen and carbon (e.g., imidazobenzodiazepinones, etc.)
 This subclass is indented under subclass 497.  Compounds in which the additional cyclo is five-membered and consists of nitrogen and carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 499]    499The additional cyclo consists of three nitrogens and two carbons (e.g., triazolobenzodiazepinones, etc.)
 This subclass is indented under subclass 498.  Compounds wherein the additional hetero ring consists of three nitrogens and two carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 500]    500Bicyclo ring system having the hetero ring as one of the cyclos
 This subclass is indented under subclass 492.  Compounds wherein the hetero ring is in a polycylo ring system which contains exactly two cyclos.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 501]    501At least three nitrogens in the hetero ring
 This subclass is indented under subclass 500.  Compounds in which the hetero ring contains at least three nitrogen atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 502]    502At least three hetero atoms in the bicyclo ring system
 This subclass is indented under subclass 500.  Compounds wherein the other cyclo of the bicyclo ring system contains a hetero atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 503]    503Chalcogen in the bicyclo ring system
 This subclass is indented under subclass 502.  Compounds wherein the other cyclo of the bicyclo ring system contains 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 540 subclass 504]    504The bicyclo ring system is 1,4-benzodiazepine (including hydrogenated)
 This subclass is indented under subclass 500.  Compounds wherein the bicyclo ring system has the following structure, which may contain double bonds between its members

Image 1 for class 540 subclass 504

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

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[List of Patents for class 540 subclass 505]    505The chalcogen double bonded directly to the hetero ring is sulfur
 This subclass is indented under subclass 504.  Compounds wherein the chalcogen double bonded directly to the hetero ring is sulfur.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 506]    506Additional chalcogen bonded directly to ring carbon of the hetero ring
 This subclass is indented under subclass 504.  Compounds wherein an additional chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to a ring carbon of the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 507]    507The additional chalcogen is bonded directly at the 3-position of the bicyclo ring system
 This subclass is indented under subclass 506.  Compounds wherein the additional chalcogen is bonded directly at the 3-position 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 540 subclass 508]    508Nitrogen or -C(=X)-, wherein X is chalcogen, attached indirectly to the chalcogen by acyclic nonionic bonding
 This subclass is indented under subclass 507.  Compounds in which nitrogen or - -, wherein X is chalcogen (i.e., oxygen, sulfur selenium or tellurium), is in the 3-position substituent and attached indirectly to the 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 540 subclass 509]    509Acyclic nitrogen bonded directly to the hetero ring
 This subclass is indented under subclass 504.  Compounds in which acyclic nitrogen is bonded directly to the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 510]    510Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring
 This subclass is indented under subclass 504.  Compounds in which- C - 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:

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[List of Patents for class 540 subclass 511]    511Halogen bonded directly to the hetero ring
 This subclass is indented under subclass 504.  Compounds in which halogen is bonded directly to the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 512]    512Chalcogen attached indirectly to nitrogen of the hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 504.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached indirectly to a nitrogen of the hetero ring by acyclic nonionic bonding.
(1) Note. An example of compound provided for herein is:

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[List of Patents for class 540 subclass 513]    513Sulfur, -C(=X)-, wherein X is chalcogen, or nitrogen, other than as nitro or nitroso, bonded directly to the carbocyclic ring of the bicyclo ring system
 This subclass is indented under subclass 504.  Compounds in which sulfur, - - , wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), or nitrogen, other than as nitro or nitroso (-NO2 or -NO) is bonded directly to the carbocyclic ring of the bicyclo ring system.
(1) Note. Examples of compounds provided here herein are:

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[List of Patents for class 540 subclass 514]    514Nitrogen in the 1-position substituent of the bicyclo ring system
 This subclass is indented under subclass 504.  Compounds wherein the 1-position substituent of the bicyclo ring system contains nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 515]    515Preparation by cyclizing benzophenones or imine derivatives thereof
 This subclass is indented under subclass 504.  Processes whereby benzophenones or imine derivative thereof are cyclized to form the bicyclo ring system.
  
[List of Patents for class 540 subclass 516]    516Preparation from a compound containing a different hetero ring
 This subclass is indented under subclass 504.  Processes whereby the compound containing the bicyclo ring system is prepared from a compound containing a different hetero ring.
  
[List of Patents for class 540 subclass 517]    517The bicyclo ring system is 1,5-benzodiazepine (including hydrogenated)
 This subclass is indented under subclass 500.  Compounds wherein the bicyclo ring system has the following structure, which may contain double bonds between its members:

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

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[List of Patents for class 540 subclass 518]    518Additional chalcogen double bonded directly to ring carbon of the hetero ring
 This subclass is indented under subclass 517.  Compounds wherein an additional chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is double donded directly to a ring carbon of the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 519]    519Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 485.  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:

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[List of Patents for class 540 subclass 520]    520Two of the cyclos share at least three ring members or a ring member is shared by three of the cyclos (e.g., bridged, peri-fused, etc.)
 This subclass is indented under subclass 519.  Compounds wherein (a) at least three members of one cyclone are members of an additional cyclone in the polycyclo ring system or (b) one ring member is a member of three of the cyclos in the polycyclo ring system (e.g., bridged, peri-fused, etc.).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 521]    521Plural hetero atoms in the polycyclo ring system
 This subclass is indented under subclass 519.  Compounds wherein the polycyclo ring system contains at least two hetero atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 522]    522Tricyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 519.  Compounds in which the polycyclo ring system consists of exactly three rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 523]    523Bicyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 519.  Compounds in which the polycyclo ring system consists of exactly two rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 524]    524Additional hetero ring containing
 This subclass is indented under subclass 485.  Compounds which contain at least two hetero rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 525]    525Plural seven-membered hetero rings
 This subclass is indented under subclass 524.  Compounds which contains at least two seven-membered hetero rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 526]    526Additional chalcogen bonded directly to the hetero ring
 This subclass is indented under subclass 485.  Compounds wherein additional 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:

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[List of Patents for class 540 subclass 527]    527Nitrogen bonded directly to the hetero ring
 This subclass is indented under subclass 485.  Compounds in which nitrogen is bonded directly to the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 528]    528The nitrogen is bonded additionally only to hydrogen
 This subclass is indented under subclass 527.  Compounds wherein the nitrogen is bonded additionally only to hydrogen, i.e., -NH2.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 529]    529Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring
 This subclass is indented under subclass 485.  Compounds in which- C - where 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:

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[List of Patents for class 540 subclass 530]    530Halogen bonded directly to the hetero ring
 This subclass is indented under subclass 485.  Compounds wherein halogen is bonded directly to the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 531]    531Chalcogen or nitrogen attached indirectly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 485.  Compounds in which nitrogen or 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:

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[List of Patents for class 540 subclass 532]    532Preparing from a compound containing a hetero ring
 This subclass is indented under subclass 485.  Processes whereby the compound containing the seven-membered hetero ring is prepared from a heterocyclic compounds.
  
[List of Patents for class 540 subclass 533]    533The hetero ring is a lactam (i.e., -C(=X)-NH- is part of the ring, wherein X is chalcogen and substitution may be made for the hydrogen only)
 This subclass is indented under subclass 532.  Processes wherein the hetero ring in the heterocyclic reactant is a lactam; i.e., contains - - NH - as part of the ring, wherein X is chalcogen (i.e., oxygen, selenium or telluriun) and substitution may be made for the hydrogen only.
  
[List of Patents for class 540 subclass 534]    534Preparing from a compound containing a cycloaliphatic ring
 This subclass is indented under subclass 485.  Processes whereby the compound containing the seven-membered hetero ring is prepared from a compound containing a cycloaliphatic ring.
  
[List of Patents for class 540 subclass 535]    535The reactant is a cyclic oxime
 This subclass is indented under subclass 534.  Processes wherein the reactant is a cyclic oxime.
  
[List of Patents for class 540 subclass 536]    536Gas phase rearrangement
 This subclass is indented under subclass 535.  Processes wherein the reaction involves a rearrangement which occurs in a gaseous phase.
  
[List of Patents for class 540 subclass 537]    537Acyclic -C(=X)X-, wherein the X's are the same or diverse chalcogens, attached directly to the cycloaliphatic ring by nonionic bonding
 Processes under 534 wherein acyclic - - X - , wherein the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium or tellurium), is attached directly to the cycloaliphatic ring of the reactant by nonionic bonding.
  
[List of Patents for class 540 subclass 538]    538Cyclization to form the hetero ring
 This subclass is indented under subclass 485.  Processes whereby the hetero ring is formed by cyclization.
  
[List of Patents for class 540 subclass 539]    539Reactant contains a cyano group
 This subclass is indented under subclass 538.  Processes wherein a reactant contains a cyano group (i.e., -CN).
  
[List of Patents for class 540 subclass 540]    540Purification or recovery
 This subclass is indented under subclass 485.  Processes wherein the lactam is separated from impurities or from the reaction medium.
  
[List of Patents for class 540 subclass 541]    541Heavy metal or boron containing
 This subclass is indented under subclass 484.  Compounds which contain boron or a metal having a specific gravity greater than four.
(1) Note. Arsenic is considered a metal for purposes of this subclass.
(2) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 542]    542Phosphorus attached directly or indirectly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 484.  Compounds wherein phosphorus is attached directly or indirectly to the 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 540 subclass 543]    543Spiro
 This subclass is indented under subclass 484.  Compounds which contain a spiro ring system.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 544]    544The hetero ring contains chalcogen
 This subclass is indented under subclass 484.  Compounds in which the hetero ring contains 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 540 subclass 545]    545Plural nitrogens in the heterocyclic ring
 This subclass is indented under subclass 544.  Compounds wherein the hetero ring contains at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 546]    546Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 544.  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:

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[List of Patents for class 540 subclass 547]    547Tricyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 546.  Compounds in which the polycyclo ring system consists of exactly three rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 548]    548At least three ring hetero atoms in the tricyclo ring system
 This subclass is indented under subclass 547.  Compounds wherein the tricyclo ring system contains at least three hetero atoms.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 549]    549Sulfur and nitrogen are bonded directly to each other in the hetero ring
 This subclass is indented under subclass 547.  Compounds wherin sulfur and nitrogen are bonded directly to each other in the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 550]    550The nitrogen of the hetero ring is bonded directly to both remaining rings of the tricyclo ring system (e.g., dibenzo(b,e)(1,4)thiazepine, etc.)
 This subclass is indented under subclass 547.  Compounds wherein the nitrogen of the hetero ring is bonded directly to both carbocyclic rings of the tricyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 551]    551Nitrogen bonded directly to ring carbon of the hetero ring
 This subclass is indented under subclass 547.  Compounds in which nitrogen is bonded directly to a ring carbon of the seven-membered hetero ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 552]    552Bicyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 546.  Compounds wherein the polycyclo ring system consists of exactly two rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 553]    553The hetero ring contains plural nitrogens (e.g., 1,3-diazepines, etc.)
 This subclass is indented under subclass 484.  Compounds in which the hetero ring contains at least two nitrogens.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 554]    554The hetero ring contains at least three nitrogens
 This subclass is indented under subclass 553.  Compounds in which the hetero ring contains three or more nitrogens.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 555]    555Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 553.  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:

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[List of Patents for class 540 subclass 556]    556Two of the cyclos share at least three ring members or a ring member is shared by three of the cyclos (e.g., bridged, peri-fused, etc.)
 This subclass is indented under subclass 555.  Compounds wherein (a) at least three members of one cyclo are members of an additional cyclo in the polycyclo ring system, or (b) one ring member is a member of three of the cyclos in the polycyclo ring system (e.g., bridged, peri-fused, etc.).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 557]    557Tricyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 555.  Compounds wherein the polycyclo ring system consists of exactly three rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 558]    558Nitrogen of the hetero ring is shared by an additional cyclo of the tricyclo ring system
 This subclass is indented under subclass 557.  Compounds wherein a nitrogen of the hetero ring is a member of an additional cyclo in the tricyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 559]    559The additional cyclo has at least six ring members
 This subclass is indented under subclass 558.  Compounds in which the additional cyclo has at least six ring members.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 560]    560Chalcogen in the tricyclo ring system
 This subclass is indented under subclass 558.  Compounds wherein one of the remaining cyclos of the tricyclo ring system contains 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 540 subclass 561]    561The additional cyclo consists of one nitrogen and four carbons (e.g., diazepinoindoles, etc.)
 This subclass is indented under subclass 558.  Compounds wherein the additional cyclo is five-membered consisting of one nitrogen and four carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 562]    562The additional cyclo consists of two nitrogens and three carbons (e.g., imidazobenzodiazepines, etc.)
 This subclass is indented under subclass 558.  Compounds wherein the additional cyclo is five-membered consisting of two nitrogens and three carbons.
(1) Note. An example and compound provided for herein is:

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[List of Patents for class 540 subclass 563]    563s-Triazolo(4,3-a)(1,4)-benzodi-azepines (including hydrogenated)
 This subclass is indented under subclass 558.  Compounds wherein the tricyclo ring system has the following structure, which may contain double bonds between its members:

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

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[List of Patents for class 540 subclass 564]    564Chalcogen, nitrogen, cyano or halogen bonded directly to ring carbon of the triazolo ring
 This subclass is indented under subclass 563.  Compounds wherein nitrogen, halogen, cyano (i.e., -CN) or chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to a ring carbon of the triazolo ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 565]    565Nitrogen attached indirectly to ring carbon of the triazolo ring by acyclic nonionic bonding
 This subclass is indented under subclass 563.  Compounds wherein nitrogen is attached indirectly to ring carbon of the triazolo 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 540 subclass 566]    566The unshared ring carbon of the triazolo ring is unsubstituted or alkyl substituted only
 This subclass is indented under subclass 563.  Compounds in which the unshared ring carbon of the triazolo ring is unsubstituted or substituted by alkyl only.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 567]    567Bicyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 555.  Compounds wherein the polycyclo ring system consists of exactly two rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 568]    568At least three ring hetero atoms in the bicyclo ring system
 This subclass is indented under subclass 567.  Compounds wherein the other cyclo of the bicyclo ring system contains a hetero atom.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 569]    5691,4-benzodiazepines (including hydrogenated)
 This subclass is indented under subclass 567.  Compounds wherein the bicyclo ring system has the following structure, which may contain double bonds between its members:

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

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[List of Patents for class 540 subclass 570]    570Chalcogen bonded directly to ring carbon of the hetero ring
 This subclass is indented under subclass 569.  Compounds in which 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:

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[List of Patents for class 540 subclass 571]    571Nitrogen bonded directly to ring carbon of the hetero ring
 This subclass is indented under subclass 569.  Compounds wherein nitrogen is bonded directly to ring carbon of the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 572]    572Chalcogen or nitrogen attached indirectly to ring carbon of the hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 571.  Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached indirectly to ring carbon of the 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 540 subclass 573]    573Chalcogen or nitrogen attached indirectly to ring carbon of the hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 569.  Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached indirectly to ring carbon of the hetero ring by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 574]    574Formation of the 1,4-benzodiazepine ring system
 This subclass is indented under subclass 569.  Processes for the formation of the 1,4-benzodiazepine ring system, or hydrogenated forms thereof.
  
[List of Patents for class 540 subclass 575]    575The nitrogens are in the 1,4-positions of the hetero ring
 This subclass is indented under subclass 553.  Compounds wherein the hetero ring has the following structure, which may contain double bonds between its members:

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

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[List of Patents for class 540 subclass 576]    576Polycyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 484.  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:

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[List of Patents for class 540 subclass 577]    577Plural nitrogens in the polycyclo ring system
 This subclass is indented under subclass 576.  Compounds wherein an additional cyclo of the polycyclo ring system contains nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 578]    578Three or more hetero atoms in the polycyclo ring system
 This subclass is indented under subclass 577.  Compounds wherein the polycyclo ring system contains at least three hetero atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 579]    579Nitrogen of the hetero ring is shared by an additional cyclo of the polycyclo ring system
 This subclass is indented under subclass 578.  Compounds wherein the nitrogen of the hetero ring is a member of an additional cyclo 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 540 subclass 580]    580The seven-membered hetero ring shares ring members with one other cyclo only
 This subclass is indented under subclass 577.  Compounds wherein the seven-membered hetero ring shares ring members with one other cyclo only.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 581]    581Two 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 576.  Compounds wherein (a) at least three members of one cyclo are members of an additional cyclo in the polycyclo ring system, or (b) one ring carbon is a member of three of the cyclos in the polycyclo ring system (e.g., bridged, peri-fused, etc.).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 582]    582Bicyclo ring system which contains the hetero ring as one of the cyclos (e.g., 3-azabicyclo-(3.2.2)nonanes, etc.)
 This subclass is indented under subclass 581.  Compounds wherein the polycylo ring system consists of exactly two rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 583]    583Having -C(=X)-, wherein X is chalcogen, bonded directly to ring nitrogen of the bicyclo ring system
 This subclass is indented under subclass 582.  Compounds in which- - wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is bonded directly to the ring nitrogen 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 540 subclass 584]    584Chalcogen or nitrogen attached directly to ring nitrogen of the bicyclo ring system by nonionic bonding
 This subclass is indented under subclass 582.  Compounds wherein nitrogen of chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached directly to the ring nitrogen of 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 540 subclass 585]    585Chalcogen or nitrogen attached indirectly to ring nitrogen of the bicyclo ring system by acyclic nonionic bonding
 This subclass is indented under subclass 582.  Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached indirectly to the ring nitrogen 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 540 subclass 586]    586Tricyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 576.  Compounds wherein the polycylo ring system consists of exactly three rings.
(1) Note. An example of a compounds provided for herein is:

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[List of Patents for class 540 subclass 587]    587The hetero ring shares ring members with each of two benzene rings in the tricyclo ring system (e.g., morphanthridines, etc.)
 This subclass is indented under subclass 586.  Compounds wherein the hetero ring shares ring members with each of two benzene rings in the tricyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 588]    588The nitrogen of the hetero ring is bonded directly to each of the two benzene rings (e.g., iminodibenzyl, etc.)
 This subclass is indented under subclass 587.  Compounds wherein the nitrogen of the hetero ring is bonded directly to each of the two benzene rings.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 589]    589Having -C(=X)-, wherein X is chalcogen, bonded directly to ring nitrogen of the tricyclo ring system
 This subclass is indented under subclass 588.  Compounds in which- C - wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), is bonded directly to the ring nitrogen of the tricyclo ring system.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 590]    590Nitrogen attached directly or indirectly to ring carbon of the hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 588.  Compounds wherein nitrogen is attached directly or indirectly to carbon of the hetero ring by acyclic nonionic bonding.
(1) Note. Example of compounds provided for herein are:

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[List of Patents for class 540 subclass 591]    591Chalcogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 588.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached directly or indirectly to the hetero ring by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 592]    592Nitrogen attached indirectly to ring nitrogen of the hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 588.  Compounds wherein nitrogen is attached indirectly to the nitrogen of the hetero ring by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 593]    593Bicyclo ring system which contains the hetero ring as one of the cyclos
 This subclass is indented under subclass 576.  Compounds wherein the polycyclo ring system consists of exactly two rings.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 594]    5943-Benzazepines (including hydrogenated)
 This subclass is indented under subclass 593.  Compounds wherein the cicyclo ring system has the following structure, which may contain double bonds between its members:

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

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[List of Patents for class 540 subclass 595]    595Benzene ring bonded directly to ring carbon of the hetero ring
 This subclass is indented under subclass 594.  Compounds in which a benzene ring is bonded directly to a ring carbon of the hetero ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 596]    596Additional hetero ring attached directly or indirectly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 484.  Compounds wherein an additional hetero ring is attached directly or indirectly to the hetero ring by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 597]    597The additional hetero ring is six-membered and contains nitrogen
 This subclass is indented under subclass 596.  Compounds wherein the additional hetero ring is six-membered and contains nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 598]    598Plural hetero atoms in the additional hetero ring
 This subclass is indented under subclass 597.  Compounds wherein the additional hetero rings contains at least two hetero atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 599]    599Polycyclo ring system having the additional hetero ring as one of the cyclos
 This subclass is indented under subclass 598.  Compounds wherein the additional hetero ring is 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 540 subclass 600]    600The additional hetero ring is 1,3-diazine (including hydrogenated)
 This subclass is indented under subclass 599.  Compounds wherein the additional hetero ring has the following structure, which may contain double bonds between its members:

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

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[List of Patents for class 540 subclass 601]    601The additional hetero ring is 1,3-diazine (including hydrogenated)
 This subclass is indented under subclass 598.  Compounds wherein the additional hetero ring has the following structure, which may contain double bonds between its members:

Image 1 for class 540 subclass 601

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

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[List of Patents for class 540 subclass 602]    602The additional hetero ring is five-membered and contains nitrogen
 This subclass is indented under subclass 596.  Compounds wherein the additional hetero ring is five-membered and contains nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 603]    603Plural hetero atoms in the additional hetero ring
 This subclass is indented under subclass 602.  Compounds wherein the additional hetero atoms.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 604]    604Chalcogen attached directly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 484.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached directly to the 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 540 subclass 605]    605Nitrogen attached directly to the hetero ring by nonionic bonding
 This subclass is indented under subclass 484.  Compounds in which nitrogen is attached directly to the 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 540 subclass 606]    606Chalcogen, additional nitrogen, or -C(=X)-, wherein X is chalcogen, attached directly to the nitrogen by nonionic bonding
 This subclass is indented under subclass 605.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium), - - , wherein X is chalcogen, or additional nitrogen 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 540 subclass 607]    607Having -C(=X)-, wherein X is chalcogen, bonded directly to nitrogen of the hetero ring
 This subclass is indented under subclass 484.  Compounds in which- - wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the hetero ring nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 540 subclass 608]    608Chalcogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 607.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) 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 540 subclass 609]    609Chalcogen or nitrogen attached indirectly to the hetero ring by acyclic nonionic bonding
 This subclass is indented under subclass 484.  Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur,selenium or tellurium) is attached indirectly to the hetero ring by acyclic nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 610]    610The chalcogen or nitrogen is multiple bonded to a carbon (e.g., cyano or carbonyl groups, etc.)
 This subclass is indented under subclass 609.  Compounds in which the chalcogen or nitrogen is attached directly to carbon by a multiple bond (i.e., double or triple bond).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 611]    611Benzene ring bonded directly to the hetero ring
 This subclass is indented under subclass 484.  Compounds in which a benzene ring is bonded directly to the hetero ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 540 subclass 612]    612The hetero ring is unsubstituted or alkyl substituted only
 This subclass is indented under subclass 484.  Compounds wherein the hetero ring is either unsubstituted or alkyl substituted only.
(1) Note. An example of a compound provided for herein is:

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