US PATENT SUBCLASS 556 / 147
.~.~.~.~ The chalcogen is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens

Current as of: June, 1999
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556 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
1  DF  .~ HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) {19}
138  DF  .~.~ Iron, cobalt, or nickel containing (Fe, Co, or Ni) {3}
146  DF  .~.~.~ Chalcogen bonded directly to the metal {2}
147.~.~.~.~ The chalcogen is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens {2}
148  DF  .~.~.~.~.~> Nitrogen containing (e.g., ferric chelates of ethylenediaminetetracetic acid, etc.)
149  DF  .~.~.~.~.~> Salts of acyclic monocarboxylic acids (e.g., nickel formate, cobalt acetate, etc.)

DEFINITION

Classification: 556/147

(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.