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 [Search a list of Patent Appplications for class 556]   CLASS 556,ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
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SUBCLASSES

[List of Patents for class 556 subclass 1]    1HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.)
 This subclass is indented under subclass 1.  Compounds under Class 532, ... , which contain a heavy metal, i.e., a metal having a specific gravity greater than four.
(1) Note. Many subclasses in the 532-570 Series of Classes provide for the combination of a heavy metal with an organic nucleus in a compound. Some examples are Class 534, subclass 692; Class 546, subclass 2; Class 548, subclass 101; and, Class 549, subclass 206.

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588Hazardous or Toxic Waste Destruction or Containment,   subclass 407 for the chemical destruction of organic hazardous or toxic waste containing a heavy metal.
  
[List of Patents for class 556 subclass 2]    2With preservative or stabilizer
 This subclass is indented under subclass 1.  Products wherein the heavy metal containing compound is mixed with a preserving or stabilizing agent whose sole function is to prevent physical or chemical change.
  
[List of Patents for class 556 subclass 3]    3Compound preserved or stabilized contains lead bonded directly to carbon
 This subclass is indented under subclass 2.  Products wherein the compound that is preserved or stabilized contains lead bonded directly to carbon.
(1) Note. Stabilization of the common antiknock compound, tetraethy lead, is provided for herein.
  
[List of Patents for class 556 subclass 4]    4Halogen containing preservative or stabilizer
 This subclass is indented under subclass 3.  Products wherein the preserving or stabilizing agent contains halogen.
  
[List of Patents for class 556 subclass 5]    5Chalcogen containing preservative or stabilizer
 This subclass is indented under subclass 3.  Products wherein the preserving or stabilizing agent contains chalcogen (i.e., oxygen, sulfur, selenium or tellurium).
  
[List of Patents for class 556 subclass 6]    6Nitrogen containing preservative or stabilizer
 This subclass is indented under subclass 2.  Products wherein the preserving or stabilizing agent contains nitrogen.
  
[List of Patents for class 556 subclass 7]    7Boron containing
 This subclass is indented under subclass 1.  Compounds which contain boron.
  
[List of Patents for class 556 subclass 8]    8Hydrogen bonded directly to the boron
 This subclass is indented under subclass 7.  Compounds wherein the boron is bonded directly to hydrogen.
  
[List of Patents for class 556 subclass 9]    9Silicon containing
 This subclass is indented under subclass 1.  Compounds which contain silicon.
  
[List of Patents for class 556 subclass 10]    10Silicon and heavy metal bonded directly to the same chalcogen
 This subclass is indented under subclass 9.  Compounds wherein silicon and the heavy metal are bonded directly to the same 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 556 subclass 11]    11Heavy metal bonded directly to unsaturated five-membered carbocyclic ring
 This subclass is indented under subclass 10.  Compounds wherein an unsaturated five-membered carbocyclic ring is bonded directly to the heavy metal.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 12]    12At least three carbons bonded directly to silicon
 This subclass is indented under subclass 9.  Compounds where at least three carbons are bonded directly to the silicon.
  
[List of Patents for class 556 subclass 13]    13Phosphorus containing
 This subclass is indented under subclass 1.  Compounds which contain phosphorus.
  
[List of Patents for class 556 subclass 14]    14Additional diverse heavy metal or aluminum containing
 This subclass is indented under subclass 13.  Compounds which contain an additional diverse heavy metal or aluminum.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 15]    15The heavy metal is bonded directly to the carbon of a -C(=X)- group, wherein X is chalcogen (e.g., cyclopentadienyl manganese dicarbonyl triphenyl phosphine, etc.)
 This subclass is indented under subclass 13.  Compounds in which the heavy metal is bonded directly to the carbon of a -C(=X)- 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 556 subclass 16]    16Iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, or platinum containing (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir or Pt)
 This subclass is indented under subclass 15.  Compounds in which the heavy metal is iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, or platinum.
  
[List of Patents for class 556 subclass 17]    17Plural phosphori bonded directly to the same nitrogen or chalcogen (e.g., pyrophosphates, etc.)
 This subclass is indented under subclass 13.  Compounds wherein at least two phosphori are bonded directly to the same nitrogen or chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 18]    18Plural phosphori bonded directly to the same carbon or attached to each other by an acyclic chain which chain consists of carbons or of carbons and chalcogens
 This subclass is indented under subclass 13.  Compounds wherein at least two phosphori are bonded directly to the same carbon or attached to each other by an acyclic chain which consists of carbons or of carbons and chalcogens (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 19]    19Carbon bonded directly to the phosphorus
 This subclass is indented under subclass 13.  Compounds wherein carbon is bonded directly to the phosphorus.
  
[List of Patents for class 556 subclass 20]    20Plural carbons bonded directly to the phosphorus
 This subclass is indented under subclass 19.  Compounds wherein at least two carbons are bonded directly to the phosphorus.
  
[List of Patents for class 556 subclass 21]    21Exactly three carbons bonded directly to the phosphorus (e.g., triphenylphosphines, etc.)
 This subclass is indented under subclass 20.  Compounds wherein exactly three carbons are bonded directly to the phosphorus.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 22]    22And carbon bonded directly to the heavy metal
 This subclass is indented under subclass 21.  Compounds wherein carbon is bonded directly to the heavy metal.
  
[List of Patents for class 556 subclass 23]    23Hydrogen or halogen bonded directly to the heavy metal
 This subclass is indented under subclass 21.  Compounds wherein hydrogen or halogen is bonded directly to the heavy metal.
  
[List of Patents for class 556 subclass 24]    24Exactly four chalcogens bonded directly to the phosphorus (e.g., phosphates, orthophosphates, etc.)
 This subclass is indented under subclass 13.  Compounds wherein exactly four chalcogens (i.e., oxygen, sulfur, selenium or tellurium) are bonded directly to the phosphorus.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 25]    25At least two of the chalcogens are sulfur (e.g., zinc dihydrocarbyl dithiophosphates, etc.)
 This subclass is indented under subclass 24.  Compounds wherein at least two of the chalcogens are sulfur.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 26]    26Nitrogen or -C(=X)- containing, wherein X is chalcogen
 This subclass is indented under subclass 24.  Compounds which contain nitrogen or a -C(=X)- group, wherein X is chalcogen.
  
[List of Patents for class 556 subclass 27]    27Aluminum containing
 This subclass is indented under subclass 1.  Compounds which contain aluminum.
  
[List of Patents for class 556 subclass 28]    28Plural diverse heavy metals containing
 This subclass is indented under subclass 1.  Compounds which contain at least two diverse heavy metals.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 29]    29Heavy metal double bonded directly to heavy metal
 This subclass is indented under subclass 28.  Compounds wherein the heavy metal is double bonded directly to heavy metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 30]    30Arsenic, antimony, or bismuth containing (As, Sb, or Bi)
 This subclass is indented under subclass 28.  Compounds which contain arsenic, antimony or bismuth.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 31]    31Containing -C(=X)-, wherein X is chalcogen (e.g., carbonyl containing, etc.)
 This subclass is indented under subclass 28.  Compounds which contain a -C(=X)- group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium).
  
[List of Patents for class 556 subclass 32]    32Nitrogen double bonded directly to carbon
 This subclass is indented under subclass 1.  Compounds which contain carbon double bonded directly to nitrogen.
  
[List of Patents for class 556 subclass 33]    33Carbocyclic ring bonded directly to the nitrogen (e.g., azomethines, etc.)
 This subclass is indented under subclass 32.  Compounds wherein a carbocyclic ring is bonded directly to the nitrogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 34]    34Additonal carbon double bonded to nitrogen (e.g., bisazomethines, etc.)
 This subclass is indented under subclass 33.  Compounds which contain plural groups having carbon double bonded directly to nitrogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 35]    35Additional nitrogen bonded directly to the carbon or nitrogen
 This subclass is indented under subclass 32.  Compounds wherein an additional nitrogen is bonded directly to the carbon or nitrogen is single bonded directly to the nitrogen.
  
[List of Patents for class 556 subclass 36]    36Guanidines
 This subclass is indented under subclass 35.  Compounds which contain a carbon having one nitrogen double bonded and two nitrogens single bonded directly thereto.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 37]    37Chalcogen bonded directly to the carbon or nitrogen (e.g., oximes, etc.)
 This subclass is indented under subclass 32.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the carbon or nitrogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 38]    38Nitrogen and plural sulfurs bonded directly to the same carbon (e.g., thiocarbamates, etc.)
 This subclass is indented under subclass 1.  Compounds which contain nitrogen and at least two sulfurs bonded directly to the same carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 39]    39Plural nitrogens bonded directly to the same carbon or attached to each other by a chain consisting of carbons, which carbons may be part of a ring (e.g., ethylene bis-dithiocarbamates, etc.)
 This subclass is indented under subclass 38.  Compounds wherein at least two nitrogens are bonded directly to the same carbon or are attached to each other by a chain consisting of carbons, which carbons may be part of a ring.
(1) Note. Example of compounds provided for herein are:

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[List of Patents for class 556 subclass 40]    40Plural -C(=X)- groups, wherein X is chalcogen, bonded directly to the same non-benzenoid carbons, or the enolate thereof. (e.g., beta-diketone chelates, acetylacetonates, etc.)
 This subclass is indented under subclass 1.  Compounds which contain at least two -C(=X)- groups, wherein X chalcogen (i.e., oxygen, sulfur, selenium or tellurium) bonded directly to the same nonbenzenoid carbon, or the enolate thereof.
(1) Note. An example of a compound provided for herein is:

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(2) Note. Excluded from this subclass are metal salicylates, ortho-hydroxy-benzoplenones, and hydroxy indanones, such as:

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[List of Patents for class 556 subclass 41]    41Carbon or halogen bonded directly to the metal
 This subclass is indented under subclass 40.  Compounds wherein carbon or halogen is bonded directly to the metal.
  
[List of Patents for class 556 subclass 42]    42Vanadium, niobium, or tantalum containing (V, Nb, or Ta)
 This subclass is indented under subclass 1.  Compounds which contain vanadium, niobium or tantalum.
(1) Note. Niobium has also been known as columbium.
  
[List of Patents for class 556 subclass 43]    43Carbon bonded directly to the metal (e.g., cyclopentadienyl vanadium tetracarbonyl, etc.)
 This subclass is indented under subclass 42.  Compounds wherein carbon is bonded directly to the metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 44]    44The metal is bonded directly to X of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens (e.g., vanadyl xanthate, etc.)
 This subclass is indented under subclass 42.  Compounds wherein the metal is bonded directly to X of a -C(=X) X-group, wherein the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 45]    45Manganese or rhenium containing (Mn or Re)
 This subclass is indented under subclass 1.  Compounds which contain manganese or rhenium.
  
[List of Patents for class 556 subclass 46]    46Carbon bonded directly to the metal (e.g., ethyl thiomanganese tricarbonyl, etc.)
 This subclass is indented under subclass 45.  Compounds wherein carbon is bonded directly to the metal.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 47]    47The metal is bonded directly to an unsaturated 5-membered carbocyclic ring and to at least three -C(=X)- groups, wherein X is chalcogen (e.g., cyclopentadienyl manganese tricarbonyl, indenyl manganese tricarbonyl, etc.)
 This subclass is indented under subclass 46.  Compounds wherein the metal is bonded directly to an unsaturated 5-membered carbocyclic ring and to at least three -C(=X)-groups, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium).
(1) Note. Example of compounds provided for herein are:

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[List of Patents for class 556 subclass 48]    48Chalcogen or -C(=X)-, wherein X is chalcogen, bonded directly to the unsaturated 5-membered carbocyclic ring
 This subclass is indented under subclass 47.  Compounds wherein chalcogen or -C(=X)-, wherein X is chalcogen, are bonded directly to the unsaturated 5-membered carbocyclic ring.
  
[List of Patents for class 556 subclass 49]    49The metal is bonded directly to X of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens (e.g., manganese acetate, etc.)
 This subclass is indented under subclass 45.  Compounds wherein the metal is bonded directly to X of a -C(=X)X-group, wherein the X"s are the same or diverse chalcogens (i.e., oxygen sulfur, selenium or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 50]    50Nitrogen containing
 This subclass is indented under subclass 49.  Compounds which contain nitrogen.
  
[List of Patents for class 556 subclass 51]    51Titanium, zirconium, or hafnium containing (Ti, Zr, or Hf)
 This subclass is indented under subclass 1.  Compounds which contain titanium, zirconium or hafnium.
  
[List of Patents for class 556 subclass 52]    52Carbon bonded directly to the metal
 This subclass is indented under subclass 51.  Compounds wherein carbon is bonded directly to the metal.
  
[List of Patents for class 556 subclass 53]    53Plural unsaturated 5-membered carbocyclic rings bonded directly to the metal
 This subclass is indented under subclass 52.  Compounds wherein at least two unsaturated 5-membered carbocyclic rings are bonded directly to the metal.
  
[List of Patents for class 556 subclass 54]    54Plural chalcogens bonded directly to the metal (e.g., alkyl titanates, titanic esters, etc.)
 This subclass is indented under subclass 51.  Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium or tellurium) are bonded directly to the metal.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 55]    55Containing -C(=X)X-, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 54.  Compounds which contain a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens.
  
[List of Patents for class 556 subclass 56]    56Nitrogen or halogen containing
 This subclass is indented under subclass 54.  Compounds which contain nitrogen or halogen.
  
[List of Patents for class 556 subclass 57]    57Chromium, molybdenum, or tungsten containing (Cr, Mo, or
 This subclass is indented under subclass 51.  Compounds which contain chromium, molybdenum or tungsten.
  
[List of Patents for class 556 subclass 58]    58Carbon bonded directly to the metal
 This subclass is indented under subclass 57.  Compounds wherein carbon is bonded directly to the metal.
  
[List of Patents for class 556 subclass 59]    59Chalcogen double bonded directly to the carbon (e.g., molybdenum pentacarbonyls, etc.)
 This subclass is indented under subclass 58.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium is double bonded directly to the carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 60]    60Carbocyclic ring bonded directly to the metal
 This subclass is indented under subclass 59.  Compounds wherein a carbocyclic ring is bonded directly to the metal.
  
[List of Patents for class 556 subclass 61]    61Containing -C(=X)X-, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 57.  Compounds which contain a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium or tellurium).
  
[List of Patents for class 556 subclass 62]    62The carbons of plural -C(X=)X- groups, are bonded directly to each other, to the same acyclic carbon, (e.g., chromium oxalates, etc.)
 This subclass is indented under subclass 61.  Compounds wherein the carbons of at least two -C(=X)X- groups are bonded directly to each other, to the same acyclic carbon chain.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 63]    63Nitrogen or halogen containing
 This subclass is indented under subclass 61.  Compounds which contain nitrogen or halogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 64]    64Arsenic, antimony, or bismuth containing (As, Sb, or Bi)
 This subclass is indented under subclass 1.  Compounds which contain arsenic, antimony or bismuth.
  
[List of Patents for class 556 subclass 65]    65Arsenic double bonded directly to arsenic (e.g., arsenobenzenes, etc.)
 This subclass is indented under subclass 64.  Compounds wherein arsenic is double bonded directly to arsenic.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 66]    66Containing two benzene rings each having nitrogen, chalcogen and one of the arsenics bonded directly thereto (e.g., arsphenamines, etc.)
 This subclass is indented under subclass 65.  Compounds which contain two benzene rings each having nitrogen, chalcogen (i.e., oxygen, sulfur, selenium or tellurium) and one of the arsenics bonded directly thereto.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 67]    67Sulfur double bonded directly to chalcogen (e.g., neoarsphenamines, etc.)
 This subclass is indented under subclass 66.  Compounds which contain sulfur double bonded directly to chalcogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 68]    68Tricyclo ring system having a six-membered ring, which includes heavy metal and nitrogen or chalcogen, as one of the cyclos (e.g., phenoxarsines, phenarsazines, etc.)
 This subclass is indented under subclass 64.  Compounds which contain a tricyclo ring system having a six-membered ring, which includes the heavy metal and nitrogen or chalcogen (i.e., oxygen, sulfur, selenium or tellurium), as one of the cyclos.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 69]    69Sulfur double bonded directly to chalcogen
 This subclass is indented under subclass 64.  Compounds which contain sulfur double 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 556 subclass 70]    70Carbon bonded directly to the metal
 This subclass is indented under subclass 64.  Compounds wherein carbon is bonded directly to the metal.
  
[List of Patents for class 556 subclass 71]    71Chalcogen bonded directly to the metal (e.g., arsine oxides, etc.)
 This subclass is indented under subclass 70.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the metal.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 72]    72Plural chalcogens bonded directly to the metal
 This subclass is indented under subclass 71.  Compounds wherein at least two chalcogens are bonded directly to the metal.
  
[List of Patents for class 556 subclass 73]    73Exactly three chalcogens bonded directly to the metal (e.g., arsonic acids, arsonates, etc.)
 This subclass is indented under subclass 72.  Compounds wherein exactly three chalcogens are bonded directly to the metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 74]    74Nitrogen and the metal bonded directly to the same benzene ring (e.g., arsanilic acids, etc.)
 This subclass is indented under subclass 73.  Compounds wherein nitrogen and the metal are bonded directly to the same benzene ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 75]    75Having -C(=X)-, wherein X is chalcogen, attached directly or indirectly to the nitrogen by acyclic nononic bonding
 This subclass is indented under subclass 74.  Compounds in which a -C(=X)- group, where X is chalcogen, is attached directly or indirectly to the nitrogen by acyclic nonionic bonding.
  
[List of Patents for class 556 subclass 76]    76Chalcogen bonded directly to the metal
 This subclass is indented under subclass 64.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the metal.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 77]    77Containing -C(=X)X-, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 76.  Compounds which contain a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens.
  
[List of Patents for class 556 subclass 78]    78Carbocyclic ring bonded directly to the carbon of the -C(=X)X- group
 This subclass is indented under subclass 77.  Compounds wherein a carbocyclic ring is bonded directly to the carbon of the -C(=X)X- group.
  
[List of Patents for class 556 subclass 79]    79The carbons of plural -C(=X)X- groups are bonded directly to each other, to the same carbon, or to a chain consisting of carbons, which carbons may be part of a ring (e.g., bismuth tartrates, etc.)
 This subclass is indented under subclass 77.  Compounds wherein the carbons of at least two -C(=X)X- groups are bonded directly to each other, to the same carbon, or to a chain consisting of carbons which carbons may be part of a ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 80]    80Carbocyclic ring bonded directly to the chalcogen
 This subclass is indented under subclass 76.  Compounds wherein a carbocyclic ring is bonded directly to the chalcogen.
  
[List of Patents for class 556 subclass 81]    81Germanium, tin, or lead containing (Ge, Sn, or Pb)
 This subclass is indented under subclass 1.  Compounds which contain germanium, tin or lead.
  
[List of Patents for class 556 subclass 82]    82Tin bonded directly to tin or lead bonded directly to lead
 This subclass is indented under subclass 81.  Compounds wherein tin is bonded directly to tin or lead is bonded directly to lead.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 83]    83Plural heavy metals bonded directly to the same chalcogen (e.g., two germaniums bonded directly to the same oxygen, etc.)
 This subclass is indented under subclass 81.  Compounds wherein at least two heavy metals are bonded directly to the same chalcogen (i.e., oxygen, sulfur, selenium or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 84]    84Exactly three carbons bonded directly to each of the metals (e.g., bis tributyl tin oxides, etc.)
 This subclass is indented under subclass 83.  Compounds wherein exactly three carbons are bonded directly to each of the metals.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 85]    85Sulfur double bonded directly to chalcogen
 This subclass is indented under subclass 81.  Compounds which contain sulfur double bonded directly to chalcogen (i.e., oxygen, sulfur, selenium or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 86]    86Exactly three carbons bonded directly to the metal
 This subclass is indented under subclass 85.  Compounds wherein exactly three carbons are bonded directly to the metal.
  
[List of Patents for class 556 subclass 87]    87Carbon bonded directly to the metal
 This subclass is indented under subclass 81.  Compounds wherein carbon is bonded directly to the metal.
  
[List of Patents for class 556 subclass 88]    88Chalcogen bonded directly to the metal
 This subclass is indented under subclass 87.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the metal.
(1) Note. Examples of compounds provided for herein are:

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SEE OR SEARCH THIS CLASS, SUBCLASS:

83,for polymeric dialkylmetal oxides.
84,for trialkyltin oxides also called bis (trialkyltin) oxides.
  
[List of Patents for class 556 subclass 89]    89Plural chalcogens bonded directly to the metal
 This subclass is indented under subclass 88.  Compounds wherein at least two chalcogens are bonded directly to the metal.
  
[List of Patents for class 556 subclass 90]    90At least one of the chalcogens is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 89.  Compounds in which at least one of the chalcogens is part of a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens.
  
[List of Patents for class 556 subclass 91]    91Sulfur containing (e.g., organotinmercaptio carboxylic acid ester sulfides, etc.)
 This subclass is indented under subclass 90.  Compounds which contain sulfur.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 92]    92Acyclic carbon to carbon unsaturation containing (e.g., diorganotin maleates, etc.)
 This subclass is indented under subclass 90.  Compounds which contain acyclic carbon to carbon unsaturation.
(1) Note. Examples of compounds provided for herein are:

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90,for dibutyltin maleates, e.g.,

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[List of Patents for class 556 subclass 93]    93Having -C(=X)X-, are the same or diverse chalcogens, attached indirectly to the metal by nonionic bonding (e.g., dialkyl tin thioglycollic acid esters, etc.)
 This subclass is indented under subclass 89.  Compounds in which a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens, is attached indirectly to the metal by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 94]    94The chalcogen is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 88.  Compounds in which the chalcogen is part of a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens.
  
[List of Patents for class 556 subclass 95]    95The compound consists of the metal, carbon and hydrogen or the metal, carbon, hydrogen and halogen (e.g., tetraalkylleads, etc.)
 This subclass is indented under subclass 87.  Compounds which consist of the metal, carbon and hydrogen or the metal, carbon, hydrogen and halogen.
(1) Note. Examples of compounds provided for herein are:

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82,for hexaorganodistannanes, e.g., hexabutylidtin and hexaorganodiplumbanes, e.g., hexaethyldilead.
  
[List of Patents for class 556 subclass 96]    96Preparing by utilizing a magnesium containing material (e.g., Grignard reagent, etc.)
 This subclass is indented under subclass 95.  Processes wherein the compound is prepared by utilizing a magnesium containing material in any way, e.g., as a catalyst, reactant, etc.
  
[List of Patents for class 556 subclass 97]    97Preparing by interchange of radicals between heavy metal atoms (e.g., redistribution, disproportionation, etc.)
 This subclass is indented under subclass 95.  Processes wherein the compound is prepared by an interchange of radicals between the heavy metal atoms, i.e., a shift of a radical, unchanged, from one heavy metal atom to another heavy metal atom.
(1) Note. Included in this subclass are the processes of redistribution, disproportionation, etc., e.g.,

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(2) Note. This interchange may occur when plural molecules of the same heavy metal compound are acted upon in such a manner as to produce two different heavy metal compounds via molecular redistribution.
  
[List of Patents for class 556 subclass 98]    98Preparing by reacting free heavy metal or heavy metal containing alloy with hydrocarbyl halide (e.g., reacting Pb-Na alloy with hydrocarbyl chloride, etc.)
 This subclass is indented under subclass 95.  Processes wherein the compound is prepared by reacting a free heavy metal or a heavy metal containing alloy with a hydrocarbyl halide.
(1) Note. Examples of processes provides for herein are:

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[List of Patents for class 556 subclass 99]    99Additional heavy metal containing material or aluminum containing material utilized
 This subclass is indented under subclass 98.  Processes wherein a material containing an additional heavy metal or aluminum is utilized in any way, e.g., as a catalyst, reactant, etc.
  
[List of Patents for class 556 subclass 100]    100Phosphorus containing material or organic nitrogen containing compound utilized
 Processes under 98 wherein a phosphorus containing material or an organic nitrogen containing compound is utilized in any way, e.g., as a catalyst, accelerator, solvent, etc.
  
[List of Patents for class 556 subclass 101]    101Organic chalcogen containing compound or additional organic halogen containing utilized
 This subclass is indented under subclass 98.  Processes wherein an organic chalcogen containing compound or an additional halogen containing compound is utilized in any way, e.g., as a catalyst, accelerator, solvent, etc.
  
[List of Patents for class 556 subclass 102]    102Preparing by utilizing boron, aluminum, gallium, indium, or thallium
 This subclass is indented under subclass 95.  Processes wherein the compound is prepared by utilizing a boron, aluminum, gallium, indium, or thallium containing material any way, e.g., as a catalyst, reactant, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

97,for processes which include the interchange of radicals between heavy metal atoms (e.g., redistribution, disproportionation, etc.).
  
[List of Patents for class 556 subclass 103]    103Purification or recovery
 This subclass is indented under subclass 95.  Processes which include separating the compound from impurities or from the reaction mixture.
  
[List of Patents for class 556 subclass 104]    104Halogen bonded directly to the metal
 This subclass is indented under subclass 95.  Compounds wherein halogen is bonded directly to the metal.
  
[List of Patents for class 556 subclass 105]    105Containing -C(=X)X-, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 81.  Compounds which contain a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur,, selenium or tellurium).
  
[List of Patents for class 556 subclass 106]    106Carbocyclic ring bonded directly to the carbon of the -C(=X)X- group (e.g., lead phthalates, etc.)
 This subclass is indented under subclass 105.  Compounds wherein a carbocyclic ring is bonded directly to the carbon of the -C(=X)X- group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 107]    107Nitrogen containing
 This subclass is indented under subclass 10.  Compounds which contain nitrogen.
  
[List of Patents for class 556 subclass 108]    108Carbocyclic ring and the metal are bonded directly to the same chalcogen (e.g., stannous catecholates, etc.)
 This subclass is indented under subclass 81.  Compounds wherein a carbocyclic ring and the metal are bonded directly to the same 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 556 subclass 109]    109Plural chalcogens and plural nitro groups bonded directly to the same benzene ring (e.g., lead styphnates, lead salts of di-nitroresorcinol, etc.)
 This subclass is indented under subclass 108.  Compounds wherein at least two chalcogens and at least two nitro groups are bonded directly to the same benzene ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 110]    110Copper, silver, or gold containing (Cu, Ag, or Au)
 This subclass is indented under subclass 1.  Compounds which contain copper, silver or gold.
  
[List of Patents for class 556 subclass 111]    111Sulfur double bonded directly to chalcogen
 This subclass is indented under subclass 110.  Compounds which contain sulfur double bonded directly to chalcogen (i.e., oxygen, sulfur, selenium or tellurium).
(1) Note. An example of a compound provided for herein:

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[List of Patents for class 556 subclass 112]    112Carbon bonded directly to the metal
 This subclass is indented under subclass 110.  Compounds wherein carbon is bonded directly to the metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 113]    113Chalcogen bonded directly to the metal
 This subclass is indented under subclass 110.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the metal.
  
[List of Patents for class 556 subclass 114]    114The chalcogen is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 113.  Compounds in which the chalcogen is part of a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens.
  
[List of Patents for class 556 subclass 115]    115Carbocyclic ring bonded directly to the carbon of the -C(=X)X- group
 This subclass is indented under subclass 114.  Compounds wherein a carbocyclic ring is bonded directly to the carbon of the -C(X)X- group.
  
[List of Patents for class 556 subclass 116]    116Nitrogen containing
 This subclass is indented under subclass 114.  Compounds which contain nitrogen.
  
[List of Patents for class 556 subclass 117]    117Containing -C(=X)-, wherein X is chalcogen
 This subclass is indented under subclass 113.  Compounds which contain a -C(X)X- group, wherein X is chalcogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 118]    118Zinc, cadmium, or mercury containing (Zn, Cd, or Hg)
 This subclass is indented under subclass 1.  Compounds which contain zinc, cadmium, or mercury.
  
[List of Patents for class 556 subclass 119]    119Sulfur double bonded directly to chalcogen
 This subclass is indented under subclass 118.  Compounds which contain sulfur double 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 556 subclass 120]    120Containing -C(=X)-, wherein X is chalcogen (e.g., zinc formaldehyde sulphoxylates, etc.)
 This subclass is indented under subclass 119.  Compounds which contain a -C(=X)X- group, wherein X is chalcogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 121]    121Carbon bonded directly to the metal
 This subclass is indented under subclass 118.  Compounds wherein carbon is bonded directly to the metal.
  
[List of Patents for class 556 subclass 122]    122Chalcogen bonded directly to the metal
 This subclass is indented under subclass 121.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the metal.
  
[List of Patents for class 556 subclass 123]    123The carbon is part of a carbocyclic ring (e.g., phenyl mercury nitrate, phenyl mercury phenolates, etc.)
 This subclass is indented under subclass 122.  Compounds wherein the carbon is part of a carbocyclic ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 124]    124Hydrogen or -C(=X)-, wherein X is chalcogen, bonded directly to the chalcogen (e.g., H-X-Metal-Ring-H, -C(=X)X-Metal-Ring-H, phenyl mercury hydroxides, phenyl mercury acetates, etc.)
 This subclass is indented under subclass 123.  Compounds which hydrogen or -C(=X)X-, wherein X is chalcogen, is bonded directly to the chalcogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 125]    125The carbon of the -C(=X)X- group is bonded directly to the carbocyclic ring or to a different carbocyclic ring (e.g., phenyl mercury salicylates, oxymercuric benzoic acid anhydrides, etc.)
 This subclass is indented under subclass 124.  Compounds wherein the carbon of the -C(=X)X- group is bonded directly to the carbocyclic ring or to a different carbocyclic ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 126]    126Additional chalcogen bonded directly to the carbocyclic ring (e.g., acetoxymercury nitrocresols, etc.)
 This subclass is indented under subclass 124.  Compounds wherein an additional chalcogen is bonded directly to the carbocyclic ring.

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[List of Patents for class 556 subclass 127]    127Hydrogen or -C(=X)-, wherein X is chalcogen, bonded directly to the chalcogen (e.g., H-X-Metal-HCH-, -C(=X)X-Metal-HCH-, etc.)
 This subclass is indented under subclass 122.  Compounds which hydrogen or -C(=X), wherein X is chalcogen is bonded directly to the chalcogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 128]    128Cyano, nitrogen or halogen bonded directly to the metal
 This subclass is indented under subclass 121.  Compounds wherein cyano, nitrogen or halogen are bonded directly to the metal.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 129]    129The compound consists of the metal, carbon and hydrogen (e.g., dialkyl zinc, etc.)
 This subclass is indented under subclass 121.  Compounds which consist of the metal, carbon and hydrogen.
(1) Note. Examples of compounds provided for herein is:

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[List of Patents for class 556 subclass 130]    130Chalcogen bonded directly to the metal
 This subclass is indented under subclass 118.  Compounds wherein chalcogen (i.e., oxygen sulfur, selenium, or tellurium) is bonded directly to the metal.
  
[List of Patents for class 556 subclass 131]    131The chalcogen is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 130.  Compounds in which the chalcogen is part of a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens.
  
[List of Patents for class 556 subclass 132]    132Carbocyclic ring bonded directly to the carbon of the -C(=X)X- group
 This subclass is indented under subclass 131.  Compounds wherein a carbocyclic ring is bonded directly to the carbon of the -C(=X)X- group.
  
[List of Patents for class 556 subclass 133]    133The carbons of plural -C(=X)X- groups are bonded directly to each other, to the same carbon, or to a chain consisting of carbons, which carbons, which carbons may be part of a ring (e.g., zinc glutamates, etc.)
 This subclass is indented under subclass 131.  Compounds wherein the carbons of at least two -C(=X)X- groups are bonded directly to each other, to the same carbon, or to a chain consisting of carbons, which carbons may be part of a ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 134]    134Nitrogen containing (e.g., zinc ethionates, etc.)
 This subclass is indented under subclass 131.  Compounds which contain nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 135]    135Carbocyclic ring bonded directly to the chalcogen (e.g., zinc phenolates, zinc thiophenates, etc.)
 This subclass is indented under subclass 130.  Compounds wherein a carbocyclic ring is bonded directly to the chalcogen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 136]    136Ruthenium, rhodium, palladium, osmium, iridium, or platinum containing (Ru, Rh, Pd, Os, Ir, or Pt)
 This subclass is indented under subclass 1.  Compounds which contain ruthen, rhodium, palladium, osmium, iridium, or platinum.
  
[List of Patents for class 556 subclass 137]    137Nitrogen bonded directly to the metal
 This subclass is indented under subclass 136.  Compounds wherein nitrogen is bonded directly to the metal.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 138]    138Iron, cobalt, or nickel containing (Fe, Co, or Ni)
 This subclass is indented under subclass 1.  Compounds which contain iron, cobalt or nickel.
  
[List of Patents for class 556 subclass 139]    139Sulfur double bonded directly to chalcogen
 This subclass is indented under subclass 138.  Compounds wherein carbon is bonded directly to the metal.
(1) Note. An example of a compounds provided for herein are:

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[List of Patents for class 556 subclass 140]    140Carbon bonded directly to the metal
 This subclass is indented under subclass 138.  Compounds wherein carbon is bonded directly to the metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 141]    141Chalcogen double bonded directly to the carbon (e.g., butadiene iron tricarbonyls, etc.)
 This subclass is indented under subclass 140.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is double bonded directly to the carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 142]    142Carbocyclic ring bonded directly to the metal
 This subclass is indented under subclass 141.  Compound s wherein a carbocyclic ring is bonded directly to the metal.
  
[List of Patents for class 556 subclass 143]    143Plural unsaturated five-membered carbocyclic rings bonded directly to the metal (e.g., ferrorcenes, bis indenyl iron, etc.)
 This subclass is indented under subclass 140.  Compounds wherein at least two unsaturated five-membered carbocyclic rings are bonded directly to the metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 144]    144Chalcogen, nitrogen or halogen containing
 This subclass is indented under subclass 143.  Compounds which contain chalcogen (i.e., oxygen, sulfur, selenium or tellurium), nitrogen or halogen.
  
[List of Patents for class 556 subclass 145]    145Chalcogen, nitrogen, halogen or -C(=X)-, wherein X is chalcogen, bonded directly to at least one of the carbocyclic rings
 This subclass is indented under subclass 144.  Compounds in which a chalcogen, nitrogen, halogen or -C(=X)-, wherein X is chalcogen, is bonded directly to at least one of the carbocyclic rings.
(1) Note. Example of compounds provided for herein are:

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[List of Patents for class 556 subclass 146]    146Chalcogen bonded directly to the metal
 This subclass is indented under subclass 138.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the metal.
  
[List of Patents for class 556 subclass 147]    147The chalcogen is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 146.  Compounds in which the chalcogen is part of a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens.
  
[List of Patents for class 556 subclass 148]    148Nitrogen containing (e.g., ferric chelates of ethylenediaminetetracetic acid, etc.)
 This subclass is indented under subclass 147.  Compounds which contain nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 149]    149Salts of acyclic monocarboxylic acids (e.g., nickel formate, cobalt acetate, etc.)
 This subclass is indented under subclass 147.  Compounds which are salts of acyclic monocarboxylic acids.
(1) Note. Examples of compounds provided for herein are:

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146,for iron, nickel, or cobalt gluconates, e.g.,

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[List of Patents for class 556 subclass 150]    150Carbocyclic ring bonded directly to the chalcogen
 This subclass is indented under subclass 146.  Compounds wherein a carbocyclic ring is bonded directly to the chalcogen.
  
[List of Patents for class 556 subclass 170]    170ALUMINUM CONTAINING
 This subclass is indented under subclass 1.  Compounds under Class 532, ... , which contain aluminum.

SEE OR SEARCH CLASS:

588Hazardous or Toxic Waste Destruction or Containment,   subclasses 405 through 409for the chemical destruction of organic hazardous or toxic waste containing aluminum.
  
[List of Patents for class 556 subclass 171]    171With preservative or stabilizer
 This subclass is indented under subclass 170.  Products wherein the aluminum containing compound is mixed with a preserving or stabilizing agent whose sole function is to prevent physical or chemical change.
  
[List of Patents for class 556 subclass 172]    172Boron containing
 This subclass is indented under subclass 170.  Compounds which contain boron.
  
[List of Patents for class 556 subclass 173]    173Silicon containing
 This subclass is indented under subclass 170.  Compounds which contain silicon.
  
[List of Patents for class 556 subclass 174]    174Phosphorus containing
 This subclass is indented under subclass 170.  Compounds which contain phosphorus.
  
[List of Patents for class 556 subclass 175]    175Ring aluminum containing
 This subclass is indented under subclass 170.  Compounds wherein the aluminum is a member of a ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 176]    176Nitrogen bonded directly to the aluminum
 This subclass is indented under subclass 170.  Compounds wherein nitrogen is bonded directly to the aluminum.
(1) Note. Examples of compounds provided for herein are:

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175,for aluminum salts of polyaminopolycarboxylic acids, e.g., the aluminum chelate of ethylenediaminetetracetic acid.
  
[List of Patents for class 556 subclass 177]    177Oxygen double bonded directly to sulfur
 This subclass is indented under subclass 170.  Compounds which contain oxygen double bonded directly to sulfur.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 178]    178Plural aluminums containing
 This subclass is indented under subclass 170.  Compounds which contain at least two aluminums.
  
[List of Patents for class 556 subclass 179]    179Chalcogen bonded directly to aluminum
 This subclass is indented under subclass 178.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to at least one of the aluminums.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 180]    180Halogen bonded directly to aluminum (e.g., sesquihalides, etc.)
 This subclass is indented under subclass 178.  Compounds wherein halogen is bonded directly to at least one of the aluminums.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 181]    181Chalcogen bonded directly to aluminum
 This subclass is indented under subclass 170.  Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the aluminum.
  
[List of Patents for class 556 subclass 182]    182Plural chalcogens bonded directly to the same aluminum
 This subclass is indented under subclass 181.  Compounds wherein at least two chalcogens are bonded directly to the same aluminum.
(1) Note. Examples of compounds provided for herein are:

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175,for aluminum catracholates, aluminum acetylacetonates, and aluminum glycerates.
  
[List of Patents for class 556 subclass 183]    183At least one of the chalcogens is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 182.  Compounds in which at least one of the chalcogens is part of a -C(=X)X- group, wherein the X"s are the same or diverse chalcogens.
(1) Note. An example of a compound provided for herein is:

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175,for aluminum salts of alfa-hydroxy carboxylic acids, e.g., aluminum lactate:

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,since a consideration of the patents involved does not make unequivocally clear whether the aluminum involved is cyclic or acyclic; and, for aluminum salts of polyaminopolycarboxylic acids, e.g., the aluminum chelate of ethylenediaminetetracetic acid.
  
[List of Patents for class 556 subclass 184]    184Ring bonded directly to the carbon of the -C(=X)X- group
 This subclass is indented under subclass 183.  Compounds wherein a ring is bonded directly to the carbon of the-C (=X) X- group.
(1) Note. An example of a compound provided for herein is:

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175,for aluminum salts of salicyclic acids such as:

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,since it is not clear whether the aluminum involved is cyclic or acyclic.
  
[List of Patents for class 556 subclass 185]    185Preparing by oxidation
 This subclass is indented under subclass 182.  Processes wherein the compound is prepared by an oxidation reaction.
  
[List of Patents for class 556 subclass 186]    186Halogen bonded directly to the aluminum
 This subclass is indented under subclass 170.  Compounds wherein halogen is bonded directly to the aluminum.

SEE OR SEARCH THIS CLASS, SUBCLASS:

180,for aluminum sesquihalides.
  
[List of Patents for class 556 subclass 187]    187Processes of preparing, purifying or recovering compounds having plural carbons bonded directly to the same aluminum
 This subclass is indented under subclass 170.  Processes which are directed tot he preparation, purification, recovery, or treatment of a compound having at least two carbons bonded directly to the same aluminum.
  
[List of Patents for class 556 subclass 188]    188Aluminum containing alloy or elemental aluminum utilized
 This subclass is indented under subclass 187.  Processes wherein an aluminum containing alloy or elemental aluminum is utilized.
  
[List of Patents for class 556 subclass 189]    189And utilizing a material which contains a metal other than aluminum
 This subclass is indented under subclass 188.  Processes wherein a material which contains a metal other than aluminum is utilized.
  
[List of Patents for class 556 subclass 190]    190Reactants include unsaturated hydrocarbon and compound having carbon bonded directly to aluminum
 This subclass is indented under subclass 187.  Processes wherein the compound is prepared by reacting an unsaturated hydrocarbon with a compound having carbon bonded directly to the aluminum.
(1) Note. Examples of processes provided for herein are:

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[List of Patents for class 556 subclass 400]    400SILICON CONTAINING
 This subclass is indented under subclass 1.  Compounds under Class 532, ... , which contain silicon.

SEE OR SEARCH CLASS:

588Hazardous or Toxic Waste Destruction or Containment,   subclasses 405 through 409for the chemical destruction of organic hazardous or toxic waste containing at least Si.
  
[List of Patents for class 556 subclass 401]    401With preservative or stabilizer
 This subclass is indented under subclass 400.  Products wherein the silicon-containing compound is mixed with a preserving or stabilizing agent whose sole function is to prevent physical or chemical change.
  
[List of Patents for class 556 subclass 402]    402Boron containing
 This subclass is indented under subclass 400.  Compounds which contain boron.
  
[List of Patents for class 556 subclass 403]    403Boron is ring member
 This subclass is indented under subclass 402.  Compounds in which the boron is a member of a ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 404]    404Phosphorus attached directly or indirectly to silicon by nonionic bonding
 This subclass is indented under subclass 400.  Compounds in which phosphorous is attached directly or indirectly to silicon by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 405]    405Chalcogen bonded directly to silicon
 This subclass is indented under subclass 404.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to silicon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 406]    406Ring consisting of carbon and silicon
 This subclass is indented under subclass 400.  Compounds containing a ring which includes at least one atom each of carbon and silicon, and contains no other elements as ring members. Note examples below:

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[List of Patents for class 556 subclass 407]    407Nitrogen is ring member
 This subclass is indented under subclass 400.  Compounds which contain a ring having nitrogen as a ring member.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 408]    408Chalcogen is member of the ring
 This subclass is indented under subclass 407.  Compounds in which the ring additionally contains chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) as a ring member.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 409]    409Plural silicons in the ring
 This subclass is indented under subclass 407.  Compounds in which the ring additionally contains at least two silicons as ring members.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 410]    410Nitrogen attached directly to silicon by nonionic bonding
 This subclass is indented under subclass 400.  Compounds in which nitrogen is attached directly to silicon by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 411]    411Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen
 This subclass is indented under subclass 410.  Compounds wherein the nitrogen is bonded directly to a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 412]    412Plural silicons bonded directly to the nitrogen
 This subclass is indented under subclass 410.  Compounds in which at least two silicons are 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 556 subclass 413]    413Nitrogen attached indirectly to silicon by nonionic bonding
 This subclass is indented under subclass 400.  Compounds in which nitrogen is attached indirectly to silicon by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 414]    414The nitrogen is in an isocyanato or isothiocyanato group (i.e., -NCO or -NCS)
 This subclass is indented under subclass 413.  Compounds wherein the nitrogen is a part of an isocyanato or isothiocyanato group (i.e., -NCO or -NCS, respectively).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 415]    415The nitrogen is in a cyano group (i.e., -CN)
 This subclass is indented under subclass 413.  Compounds in which the nitrogen is part of a -C=N group.
(1) Note. An example of a compound provided herein is:

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[List of Patents for class 556 subclass 416]    416Chalcogen bonded directly to plural carbons or double-bonded directly to carbon
 This subclass is indented under subclass 415.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to plural carbons or is double-bonded directly to a single carbon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 417]    417Chalcogen bonded directly to silicon
 This subclass is indented under subclass 415.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to silicon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 418]    418Having -C(=X)-, wherein X is chalcogen, attached indirectly to silicon by nonionic bonding
 This subclass is indented under subclass 413.  Compounds in which a group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is attached indirectly to silicon by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 419]    419Nitrogen is bonded directly to the -C(=X)- group
 This subclass is indented under subclass 418.  Compounds in which the group is 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 556 subclass 420]    420The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
 This subclass is indented under subclass 419.  Compounds in which the is part of aX- group, wherein the X"s are the same or diverse chalcogens (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 421]    421Additional nitrogen bonded directly to the -C(=X)- group
 This subclass is indented under subclass 419.  Compounds in which the group is bonded directly to an additional nitrogen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 422]    422Chalcogen attached directly to the nitrogen by nonionic bonding
 This subclass is indented under subclass 413.  Compounds in which the nitrogen is attached directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 423]    423Plural carbons bonded directly to the same chalcogen
 This subclass is indented under subclass 413.  Compounds wherein plural carbons are bonded directly to the same chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 424]    424Plural nitrogens bonded directly to the same carbon or attached by a chain consisting of carbons, which carbons may be part of a ring
 This subclass is indented under subclass 413.  Compounds in which at least two nitrogens are bonded directly to the same carbon or are attached to each other by a chain consisting of carbons, which carbons may be part of a ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 425]    425Two silicons bonded directly to the same oxygen
 This subclass is indented under subclass 413.  Compounds in which two silicons are bonded directly to the same oxygen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 426]    426Sulfur bonded directly to silicon
 This subclass is indented under subclass 400.  Compound in which sulfur is bonded directly to silicon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 427]    427Sulfur attached indirectly to silicon by nonionic bonding
 This subclass is indented under subclass 400.  Compounds in which sulfur is attached indirectly to silicon by nonionic bonding.
  
[List of Patents for class 556 subclass 428]    428Chalcogen bonded directly to sulfur
 This subclass is indented under subclass 427.  Compounds in which chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to sulfur.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 429]    429The sulfur is part of a -SH or -SC(=X)- group, wherein X is chalcogen (H of -SH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
 This subclass is indented under subclass 427.  Compounds in which the sulfur is part of a -Sgroup, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), and wherein H of the -SH may be replaced by a substituted, or unsubstituted ammonium ion, or by a Group IA or IIA light metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 430]    430Plural silicons bonded directly to each other
 This subclass is indented under subclass 400.  Compounds in which at least two silicons are bonded directly to each other.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 431]    431Plural silicons bonded directly to the same carbon or attached by a chain consisting of carbons, which carbons may be part of a ring
 This subclass is indented under subclass 400.  Compounds in which at least two silicons are bonded directly to the same carbon or are attached by a chain consisting of carbons, which carbons may be part of a ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 432]    432Plural silicons bonded directly to the same or different benzene rings that form all or part of the chain
 This subclass is indented under subclass 431.  Compounds wherein the silicons are bonded directly to the same benzene ring or to different benzene rings, which rings form all or part of the chain.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 433]    433Two silicons bonded directly to the same oxygen
 This subclass is indented under subclass 432.  Compounds in which two silicons are bonded directly to the same oxygen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 434]    434Two silicons bonded directly to the same oxygen
 This subclass is indented under subclass 431.  Compounds in which two silicons are bonded directly to the same oxygen.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 435]    435Two silicons bonded directly to the same acyclic saturated hydrocarbon
 This subclass is indented under subclass 431.  Compounds in which two silicons are bonded directly to the same acyclic saturated hydrocarbon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 436]    436Carbonyl attached directly or indirectly to silicon by nonionic bonding
 This subclass is indented under subclass 400.  Compounds in is attached directly or indirectly to silicon by nonionic bonding.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 437]    437The carbonyl is part of a -COO- group
 This subclass is indented under subclass 436.  Compounds in which the carbonyl is in a -COO- group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 438]    438Silicon and the carbon of the -COO- group are bonded directly to the same hydrocarbon group
 This subclass is indented under subclass 437.  Compounds in which silicon and the carbon of the -COO- group are bonded directly to the same hydrocarbon group.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 439]    439Two silicons bonded directly to the same oxygen
 This subclass is indented under subclass 438.  Compounds in which two silicons are bonded directly to the same oxygen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 440]    440Silicon and the oxy of the -COO- group are bonded directly to the same hydrocarbon group
 This subclass is indented under subclass 437.  Compounds in which silicon and the oxy of the -COO- group are bonded directly to the same hydrocarbon group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 441]    441Carbocyclic ring having silicon as part of one substituent and the -COO- as part of another substituent
 This subclass is indented under subclass 437.  Compounds containing a carbocyclic ring which has at least two substituents, one of which contains silicon and another one of which contains the -COO- group.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 442]    442Silicon is bonded directly to the oxy of the -COO- group
 This subclass is indented under subclass 437.  Compounds in which silicon is bonded directly to the oxy of the -COO- group.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 443]    443Plural silicons attached by a chain consisting of oxygen and carbon, which chain may be part of a ring
 This subclass is indented under subclass 400.  Compounds in which at least two silicons are attached to each other by a chain consisting of oxygen and carbon, which chain may be part of a ring.
(1) Note. Examples of compounds provided for herein are:

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SEE OR SEARCH CLASS:

552Organic Compounds,   subclass 653 for silicon derivatives of Vitamin D compounds, cholecalciferols, activated 7-dehydrocholesterols, dihydrotachysterols, 3-5 cyclovitamin D compounds, etc.
  
[List of Patents for class 556 subclass 444]    444Two carbons bonded directly to the same oxygen
 This subclass is indented under subclass 443.  Compounds in which two carbons are bonded directly to the same oxygen, i.e., compounds containing an ether linkage.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 445]    445Two carbons bonded directly to the same oxygen
 This subclass is indented under subclass 400.  Compounds in which two carbons are bonded directly to the same oxygen, i.e., compounds containing an ether linkage.

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[List of Patents for class 556 subclass 446]    446Additional oxygen bonded directly to the silicon and to a group containing the oxygen and two carbons
 This subclass is indented under subclass 445.  Compounds wherein an additional oxygen is bonded directly both to the silicon and to the group which contains the oxygen and two carbons.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 447]    447Two carbocyclic rings bonded directly to the oxygen
 This subclass is indented under subclass 445.  Compounds in which the two carbons are ring members in carbocyclic rings.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 448]    448One of the two carbons is part of a substituent on the oxygen, which substituent contains halogen and does not contain silicon or a benzene ring
 This subclass is indented under subclass 445.  Compounds in which one of the carbons is part of a substituent which contains halogen but does not contain either silicon or a benzene ring.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 449]    449Hydroxy bonded directly to carbon or peroxy bonded directly to two carbons or to hydrogen and carbon (H of the hydroxy or the H bonded to the peroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
 This subclass is indented under subclass 400.  Compounds in which an -OH group is bonded directly to carbon or an -O-O group is bonded directly either to two carbons or to hydrogen and carbon; wherein the H of the hydroxy or the H bonded to the peroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 450]    450Two silicons bonded directly to the same oxygen
 This subclass is indented under subclass 400.  Compounds in which two silicons are bonded directly to the same oxygen.
  
[List of Patents for class 556 subclass 451]    451Hydrogen bonded directly to silicon
 This subclass is indented under subclass 450.  Compounds in which hydrogen is bonded directly to silicon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 452]    452Halogen bonded directly to silicon
 This subclass is indented under subclass 450.  Compounds in which halogen is bonded directly to silicon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 453]    453Three carbons bonded directly to the same silicon
 This subclass is indented under subclass 450.  Compounds in which three carbons are bonded directly to the same silicon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 454]    454Halogen attached indirectly to silicon by nonionic bonding
 This subclass is indented under subclass 453.  Compounds in which halogen is attached indirectly to silicon by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 455]    455Three oxygens bonded directly to the same silicon
 This subclass is indented under subclass 453.  Compounds in which three oxygens are bonded directly to the same silicon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 456]    456Three identical hydrocarbon groups bonded directly to the same silicon
 This subclass is indented under subclass 453.  Compounds in which the three carbons are members of identical hydro-carbon groups.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 457]    457Silicon and carbon bonded directly to the same oxygen
 This subclass is indented under subclass 450.  Compounds in which silicon and carbon are bonded directly to the same oxygen.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 458]    458Three oxygens each bonded directly to the same silicon and to carbon
 This subclass is indented under subclass 457.  Compounds in which three oxygens are each bonded directly to the same silicon and to carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 459]    459Hydroxy bonded directly to silicon (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) may be replaced by a substituted or unsubstituted ammonium ion or a Group
 This subclass is indented under subclass 450.  Compounds in which -OH is bonded directly to silicon; wherein the -H of the hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal.
(1) Note. Included herein are those compounds which are specifically disclosed as having hydroxy bonded directly to at least one of the silicon atoms in the siloxane compound. A search of subclass 450 is necessary to find those compounds which may be end-blocked with hydroxy groups but are not explicitly disclosed as being so terminated.
(2) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 460]    460Ring consisting of silicon and oxygen
 This subclass is indented under subclass 450.  Compounds containing a ring which includes at least one atom each of oxygen and silicon, and contains no other elements as ring members.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 461]    461Benzene ring containing
 This subclass is indented under subclass 460.  Compounds which contain a benzene ring.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 462]    462Preparing by utilizing a siloxane reactant
 This subclass is indented under subclass 450.  Processes of preparing a siloxance compound utilizing a siloxance reactant.
  
[List of Patents for class 556 subclass 463]    463Hydroxy or peroxy bonded directly to the silicon (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
 This subclass is indented under subclass 400.  Compounds in which -OH or -O-O- is bonded directly to the silicon; wherein the -H of the hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 464]    464Ring consisting of silicon, oxygen, and carbon
 This subclass is indented under subclass 400.  Compounds containing a ring which includes at least one atom each of silicon, oxygen, and carbon, and contains no other elements as ring members.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 465]    465Carbon attached directly or indirectly to the silicon by nonionic bonding (e.g., silanes, etc.)
 This subclass is indented under subclass 400.  Compounds in which carbon is attached directly or indirectly to the silicon by nonionic bonding.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 466]    466Processes
 This subclass is indented under subclass 465.  Processes for the preparation of the silicon-containing compounds or for the treatment of such compounds.
  
[List of Patents for class 556 subclass 467]    467Plural silicons in a reactant
 This subclass is indented under subclass 466.  Processes in which a compound containing at least two silicons is utilized as a reactant.
  
[List of Patents for class 556 subclass 468]    468Bonded directly to each other
 This subclass is indented under subclass 467.  Processes in which plural silicons are bonded directly to each other.
  
[List of Patents for class 556 subclass 469]    469Interchange of radicals between silicon atoms (e.g., redistribution, disproportionation, transesterification, etc.)
 This subclass is indented under subclass 466.  Processes in which there is an interchange of radicals between silicon atom, i.e., a shift of a radical, unchanged, from one silicon atom to another silicon atom.
(1) Note. Included in this subclass are the processes of redistribution, disproportionation, transesterification, etc., e.g.,

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(2) Note. This interchange may occur when plural molecules of the same silicon compound are acted upon in such a manner as to produce two different silicon compounds via molecular redistribution, e.g.,

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[List of Patents for class 556 subclass 470]    470Forming group containing silicon and carbon bonded directly to the same oxygen (e.g., esters, etc.)
 This subclass is indented under subclass 466.  Processes by which a group containing silicon and carbon bonded directly to the same oxygen is formed.
(1) Note. Included herein are those replacement reactions whereby one silicon-to-oxygen-to-carbon linkage is replaced by another such linkage.
  
[List of Patents for class 556 subclass 471]    471A silicon halide reacted with a hydroxy or oxirane-containing compound (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
 This subclass is indented under subclass 470.  Processes in which a silicon halide is reacted with a hydroxy or oxirane-containing compound; wherein the -H of the hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal.
  
[List of Patents for class 556 subclass 472]    472Elemental silicon, silicon-containing alloy or metal silicide reactant
 This subclass is indented under subclass 466.  Processes in which elemental silicon, a silicon-containing alloy or a metal silicide reactant is utilized.
  
[List of Patents for class 556 subclass 473]    473Halogen, hydrogen halide, or a silicon halide utilized
 This subclass is indented under subclass 472.  Processes which additionally utilize halogen, hydrogen halide, or a silicon halide.
  
[List of Patents for class 556 subclass 474]    474Silicon to hydrogen bond formed
 This subclass is indented under subclass 466.  Processes whereby a silicon to hydrogen bond is formed.
  
[List of Patents for class 556 subclass 475]    475Dehydrohalogenation to produce carbon to carbon unsaturation
 This subclass is indented under subclass 466.  Processes in which carbon to carbon unsaturation is produced by dehydrohalogenation; i.e., the creation of a double or triple bond between adjacent carbon atoms by the removal of hydrogen and halogen.
  
[List of Patents for class 556 subclass 476]    476Halogenation of silicon-containing compound
 This subclass is indented under subclass 466.  Processes wherein a silicon-containing compound is halogenated.
  
[List of Patents for class 556 subclass 477]    477Silicon to halogen bond formed
 This subclass is indented under subclass 476.  Processes whereby a silicon to halogen bond is formed.
(1) Note. Included herein are those processes wherein the silicon to halogen bond which is formed is by the replacement of a halogen bonded to silicon by a diverse halogen.
  
[List of Patents for class 556 subclass 478]    478Silicon to carbon bond formed
 This subclass is indented under subclass 466.  Processes whereby a silicon to carbon bond is formed.
(1) Note. Included herein are those processes wherein the silicon to carbon bond which is formed is by the replacement of a carbon-containing radical bonded directly to silicon by a diverse carbon-containing radical.
  
[List of Patents for class 556 subclass 479]    479Carbon to carbon unsaturation reduced by addition of a silicon hydride
 This subclass is indented under subclass 478.  Processes in which carbon to carbon unsaturation is reduced by the addition of a silicon hydride to the adjacent carbon atoms with the subsequent formation of a silicon to carbon bond.
  
[List of Patents for class 556 subclass 480]    480Magnesium-containing reactant
 This subclass is indented under subclass 478.  Progress wherein a magnesium-containing reactant is utilized.
  
[List of Patents for class 556 subclass 481]    481By substitution of silicon bonded hydrogen
 This subclass is indented under subclass 478.  Processes whereby the silicon to carbon bond which is formed takes the place of a silicon to hydrogen bond.
  
[List of Patents for class 556 subclass 482]    482Silicon and carbon bonded directly to the same oxygen
 This subclass is indented under subclass 465.  Compounds in which both silicon and carbon are bonded directly to the same oxygen.
(1) Note. Examples of compounds provided for herein are:

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SEE OR SEARCH CLASS:

552Organic Compounds,   subclass 653 for silicon derivatives of Vitamin D compounds, cholecalciferols, activated 7-dehydrocholesterols, dihydrotachysterols, 3-5 cyclovitamin D compounds, etc.
  
[List of Patents for class 556 subclass 483]    483Four oxygens bonded directly to the silicon
 This subclass is indented under subclass 482.  Compounds in which four oxygens are bonded directly to the silicon.
(1) Note. Examples of compounds provided for herein are:

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[List of Patents for class 556 subclass 484]    484Halogen bonded directly to the silicon
 This subclass is indented under subclass 482.  Compounds in which halogen is bonded directly to the silicon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 485]    485Halogen bonded directly to acyclic carbon
 This subclass is indented under subclass 482.  Compounds in which halogen is bonded directly to an acyclic carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 486]    486Silicon and benzene ring bonded directly to the same oxygen
 This subclass is indented under subclass 482.  Compounds in which oxygen is bonded directly to benzene and silicon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 487]    487Hydrogen bonded directly to the silicon
 This subclass is indented under subclass 465.  Compounds in which hydrogen is bonded directly to the silicon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 488]    488Halogen bonded directly to acyclic carbon
 This subclass is indented under subclass 465.  Compounds in which halogen is bonded directly to an acyclic carbon.
(1) Note. An example of a compound provided for herein is:

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[List of Patents for class 556 subclass 489]    489Unsaturated carbocyclic ring containing
 This subclass is indented under subclass 465.  Compounds which contain an unsaturated carbocyclic ring.
(1) Note. An example of a compound provided for herein is:

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