US PATENT SUBCLASS 528 / 906
FIBER OR ELASTOMER PREPARED FROM AN ISOCYANATE REACTANT

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

906FIBER OR ELASTOMER PREPARED FROM AN ISOCYANATE REACTANT

DEFINITION

Classification: 528/906

Subject matter involving a polymer derived from at least one -N=C=X- containing reactant (X is a chalcogen atom) which is utilizable as a fiber or has elastomeric properties.