US PATENT SUBCLASS 556 / 55
.~.~.~.~ Containing -C(=X)X-, 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}
51  DF  .~.~ Titanium, zirconium, or hafnium containing (Ti, Zr, or Hf) {2}
54  DF  .~.~.~ Plural chalcogens bonded directly to the metal (e.g., alkyl titanates, titanic esters, etc.) {2}
55.~.~.~.~ Containing -C(=X)X-, wherein the X's are the same or diverse chalcogens

DEFINITION

Classification: 556/55

(under subclass 54) Compounds which contain a -C(=X)X- group, wherein the X's are the same or diverse chalcogens.