US PATENT SUBCLASS 424 / 78.28
.~.~.~.~.~ Sulfur heterocycle

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}
78.26  DF  .~.~.~ Chemical treating agent contains element other than C, H, O, alkali, or alkaline earth metal {1}
78.27  DF  .~.~.~.~ Nitrogen or sulfur {2}
78.28.~.~.~.~.~ Sulfur heterocycle

DEFINITION

Classification: 424/78.28

Sulfur heterocycle:

(under subclass 78.27) Subject matter wherein the chemical treating agent contains a sulfur heterocycle; e.g., treating sulfonated polystyrene with thiamine, etc.