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
902
PARTICULATE 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).