US PATENT SUBCLASS 528 / 902
PARTICULATE MATERIAL PREPARED FROM AN ISOCYANATE


Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

902PARTICULATE MATERIAL PREPARED FROM AN ISOCYANATE


DEFINITION

Classification: 528/902

Subject matter involving particulate polymers formed from at least one -N=C=C- containing reactant (X is a chalcogen atom).