US PATENT SUBCLASS 556 / 429
.~.~.~ The 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)

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556 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
400  DF  .~ SILICON CONTAINING {19}
427  DF  .~.~ Sulfur attached indirectly to silicon by nonionic bonding {2}
429.~.~.~ The 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)

DEFINITION

Classification: 556/429

(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: [figure] [figure]