US PATENT SUBCLASS 556 / 79
.~.~.~.~.~ The 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.)

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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}
64  DF  .~.~ Arsenic, antimony, or bismuth containing (As, Sb, or Bi) {5}
76  DF  .~.~.~ Chalcogen bonded directly to the metal {2}
77  DF  .~.~.~.~ Containing -C(=X)X-, wherein the X's are the same or diverse chalcogens {2}
79.~.~.~.~.~ The 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.)

DEFINITION

Classification: 556/79

(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: [figure] [figure]