US PATENT SUBCLASS 428 / 431-- .~.~.~ Cross-linked polyester (e.g., glycerol maleate-styrene, etc.)

US PATENT SUBCLASS 428 / 431
.~.~.~ Cross-linked polyester (e.g., glycerol maleate-styrene, etc.)

Current as of: June, 1999
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428 /	HD	STOCK MATERIAL OR MISCELLANEOUS ARTICLES

411.1	DF	COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
426	DF	.~ Of quartz or glass {9}
430	DF	.~.~ Next to polyester (e.g., alkyd) {1}
431		.~.~.~ Cross-linked polyester (e.g., glycerol maleate-styrene, etc.)

DEFINITION

Classification: 428/431

(under subclass 430) Product in which some of the acid and/or the alcohol moieties, from which the polyester is derived are at least trifunctional, permitting a cross-linking of the linear polyester chain.

(1) Note. A patent claiming a laminate including a

polyester layer derived from an acid(s), which is at least tri-basic, or from an alcohol(s), which is at least tri-hydric or in which either the poly basic acid or polyhdric alcohol is unsaturated, will be placed in this subclass.