US PATENT SUBCLASS 106 / 166.43
.~.~.~.~.~.~ The oxygen is part of a -C(=O)- group (e.g., amide, urea, etc.)

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
162.1  DF  .~ Carbohydrate or derivative containing {15}
163.01  DF  .~.~ Cellulosic material {11}
166.01  DF  .~.~.~ Cellulose xanthate or viscose {8}
166.4  DF  .~.~.~.~ With organic compound containing nitrogen {2}
166.42  DF  .~.~.~.~.~ Oxygen and nitrogen in the same compound (e.g., ammonium alkyl sulfonate, tertiary amine oxide, triethanolamine, etc.) {1}
166.43.~.~.~.~.~.~ The oxygen is part of a -C(=O)- group (e.g., amide, urea, etc.)

DEFINITION

Classification: 106/166.43

The oxygen is part of a -C(=O)- group (e.g., amide, urea, etc.):

(under subclass 166.42) Compositions wherein the oxygen is double bonded to a carbon atom.