US PATENT SUBCLASS 525 / 909
POLYMER HAVING A HETEROCYCLIC RING WITH AT LEAST THREE DIFFERENT ELEMENTS WITHIN THE RING
Current as of:
June, 1999
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525 /
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SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES
909
POLYMER HAVING A HETEROCYCLIC RING WITH AT LEAST THREE DIFFERENT ELEMENTS WITHIN THE RING
DEFINITION
Classification: 525/909
POLYMER HAVING A HETEROCYCLIC RING WITH AT LEAST THREE
DIFFERENT ELEMENTS WITHIN THE RING:
Subject matter under Class 525 involving a polymer containing a heterocyclic ring with at least three different elements within the ring.
