US PATENT SUBCLASS 514 / 81
.~.~.~.~ Nonshared hetero atoms in at least two rings of the polycyclo ring system

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}
75  DF  .~ Phosphorus containing other than solely as part of an inorganic ion in an addition salt DOAI {22}
79  DF  .~.~ Nitrogen containing hetero ring {6}
80  DF  .~.~.~ Polycylo ring system having a ring nitrogen in the system {2}
81.~.~.~.~ Nonshared hetero atoms in at least two rings of the polycyclo ring system

DEFINITION

Classification: 514/81

Nonshared hetero atoms in at least two rings of the polycyclo ring system:

(under subclass 80) Subject matter in which the organo-phosphorus compound contains a polycyclo ring system which contains nonshared hetero atoms in at least two rings of the polycyclo ring systems, e.g., [figure] [caption], etc.