US PATENT SUBCLASS 536 / 59
.~.~.~.~ Sulfur containing acid

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1.11  DF  .~ Carbohydrates or derivatives {15}
56  DF  .~.~ Cellulose or derivative {4}
58  DF  .~.~.~ Esters {3}
59.~.~.~.~ Sulfur containing acid {1}
60  DF  .~.~.~.~.~> Xanthate or viscose {1}

DEFINITION

Classification: 536/59

(under subclass 58) Compounds in which the acid moiety contains sulfur.

SEE OR SEARCH THIS CLASS, SUBCLASS:

33, for nitrogen containing cellulose esters in which the acid moiety contains sulfur.