US PATENT SUBCLASS 521 / 906
POLYURETHANE CELLULAR PRODUCT CONTAINING UNREACTED FLAME-RETARDANT MATERIAL


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

906POLYURETHANE CELLULAR PRODUCT CONTAINING UNREACTED FLAME-RETARDANT MATERIAL


DEFINITION

Classification: 521/906

POLYURETHANE CELLULAR PRODUCT CONTAINING UNREACTED FLAME-RETARDANT MATERIAL:

Subject matter involving a cellular polyurethane polymer having incorporated therein a nonreactive material which enhances the ability of the polyurethane to withstand combustion or the effects of fire.