US PATENT SUBCLASS 424 / 78.15
.~.~.~.~ Plural nitrogen heteroatoms or rings

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}
78.1  DF  .~ Ion exchange resin {2}
78.12  DF  .~.~ Adsorbate or treating agent contains nitrogen {3}
78.14  DF  .~.~.~ Nitrogen heterocycle {1}
78.15.~.~.~.~ Plural nitrogen heteroatoms or rings

DEFINITION

Classification: 424/78.15

Plural nitrogen heteroatoms or rings:

(under subclass 78.14) Subject matter wherein the adsorbate or treating agent either contains plural nitrogen atoms in the ring or plural nitrogen containing rings; e.g., histamine, phenobarbital, vitamin B-12, vincamine, CDP-choline, etc.