US PATENT SUBCLASS 514 / 48
.~.~.~.~.~ Phosphorus containing

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

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
23  DF  .~ Carbohydrate (i.e., saccharide radical containing) DOAI {6}
42  DF  .~.~ N-glycoside {1}
43  DF  .~.~.~ Nitrogen containing hetero ring {4}
45  DF  .~.~.~.~ Purines (including hydrogenated) (e.g., adenine, guanine, etc.) {2}
48.~.~.~.~.~ Phosphorus containing

DEFINITION

Classification: 514/48

Phosphorus containing:

(under subclass 45) Subject matter wherein the purine compound contains phosphorus.