US PATENT SUBCLASS 508 / 219
.~.~ Cellulose ether or cellulose ester (e.g., cellulose nitrate, carboxymethylcellulose, etc.)

Current as of: June, 1999
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508 /   HD   SOLID ANTI-FRICTION DEVICES, MATERIALS THEREFOR, LUBRICANT OR SEPARATE COMPOSITIONS FOR MOVING SOLID SURFACES, AND MISCELLANEOUS MINERAL OIL COMPOSITIONS

110  DF  LUBRICANTS OR SEPARANTS FOR MOVING SOLID SURFACES AND MISCELLANEOUS MINERAL OIL COMPOSITIONS (E.G., WATER CONTAINING, ETC.) {53}
216  DF  .~ Protein, carbohydrate, lignin, plant matter of indeterminate structure, or their reaction product of indeterminate structure {3}
219.~.~ Cellulose ether or cellulose ester (e.g., cellulose nitrate, carboxymethylcellulose, etc.)

DEFINITION

Classification: 508/219

Cellulose ether or cellulose ester (e.g., cellulose nitrate, carboxymethylcellulose, etc.):

(under subclass 216) Compositions which contain esterified or etherified cellulose.