US PATENT SUBCLASS 536 / 98
.~.~.~.~.~ Carboxymethyl or salts thereof

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}
84  DF  .~.~.~ Ethers {7}
97  DF  .~.~.~.~ Carboxyalkyl or salts thereof {1}
98.~.~.~.~.~ Carboxymethyl or salts thereof

DEFINITION

Classification: 536/98

(under subclass 97) Compounds wherein the etherifying radical is the carboxymethyl radical or a salt thereof.