US PATENT SUBCLASS 106 / 31.77
.~.~.~.~.~.~ Six-ring members in the heterocyclic ring

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
31.01  DF  .~ Marking {14}
31.13  DF  .~.~ Inks {6}
31.6  DF  .~.~.~ Pigment containing {9}
31.75  DF  .~.~.~.~ Organic nitrogen compound containing {3}
31.76  DF  .~.~.~.~.~ The nitrogen is a ring member of a heterocyclic ring {3}
31.77.~.~.~.~.~.~ Six-ring members in the heterocyclic ring

DEFINITION

Classification: 106/31.77

Six-ring members in the heterocyclic ring:

(under subclass 31.76) Subject matter wherein the heterocyclic ring is six-membered and has at least one ring nitrogen.