US PATENT SUBCLASS 556 / 127
.~.~.~.~.~ Hydrogen or -C(=X)-, wherein X is chalcogen, bonded directly to the chalcogen (e.g., H-X-Metal-HCH-, -C(=X)X-Metal-HCH-, 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}
118  DF  .~.~ Zinc, cadmium, or mercury containing (Zn, Cd, or Hg) {3}
121  DF  .~.~.~ Carbon bonded directly to the metal {3}
122  DF  .~.~.~.~ Chalcogen bonded directly to the metal {2}
127.~.~.~.~.~ Hydrogen or -C(=X)-, wherein X is chalcogen, bonded directly to the chalcogen (e.g., H-X-Metal-HCH-, -C(=X)X-Metal-HCH-, etc.)

DEFINITION

Classification: 556/127

(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: [figure] [figure]