US PATENT SUBCLASS 424 / 78.19
.~.~.~ Heterocyclic monomer

Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

78.08  DF  SOLID SYNTHETIC ORGANIC POLYMER AS DESIGNATED ORGANIC ACTIVE INGREDIENT (DOAI) {6}
78.17  DF  .~ Aftertreated polymer (e.g., grafting, blocking, etc.) {2}
78.18  DF  .~.~ Polymer derived from ethylenic monomers only {2}
78.19.~.~.~ Heterocyclic monomer {2}
78.2  DF  .~.~.~.~> Maleic anhydride monomer copolymerized with hydrocarbon monomer {1}
78.22  DF  .~.~.~.~> Nitrogen heterocycle {2}

DEFINITION

Classification: 424/78.19

Heterocyclic monomer:

(under subclass 78.18) Subject matter wherein the ethylenic monomer contains a heterocyclic ring; e.g., a copolymer derived from divinyl ether and maleic anhydride, etc.