US PATENT SUBCLASS 528 / 306
.~.~.~ Ethylenically unsaturated carboxylic acid or derivative of an ethylenically unsaturated carboxylic acid


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}
272  DF  .~.~ From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof {15}
306.~.~.~ Ethylenically unsaturated carboxylic acid or derivative of an ethylenically unsaturated carboxylic acid


DEFINITION

Classification: 528/306

(under subclass 272) Subject matter wherein a reactant is an ethylenically unsaturated carboxylic acid or a derivative of an ethylenically unsaturated carboxylic acid (e.g., maleic anhydride, etc.).

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition of the term "ethylenically unsaturated".