US PATENT SUBCLASS 528 / 318
.~.~.~.~ Material is a carboxylic acid, acyl halide thereof, ester thereof, or lactone thereof


Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
271  DF  .~ FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF {10}
310  DF  .~.~ From imide- or lactam-containing compound, or from an amino-nitrogen containing carboxylic acid, or derivative of an amino-nitrogen-containing carboxylic acid {9}
312  DF  .~.~.~ Polymerizing in the presence of a specified material other than reactant {8}
318.~.~.~.~ Material is a carboxylic acid, acyl halide thereof, ester thereof, or lactone thereof


DEFINITION

Classification: 528/318

(under subclass 312) Subject matter wherein the specified material is a carboxylic acid, acyl halide thereof, ester thereof, or lactone thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

271, for a definitions of the types of chemical compounds specified herein.