US PATENT SUBCLASS 528 / 40-- .~.~ Silicon reactant contains a fused, bridged, or cycloaliphatic ring

US PATENT SUBCLASS 528 / 40
.~.~ Silicon reactant contains a fused, bridged, or cycloaliphatic ring

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

*	DD	SYNTHETIC RESINS (Class 520, Subclass 1) {23}
10	DF	.~ FROM SILICON REACTANT HAVING AT LEAST ONE SILICON-TO-HYDROGEN OR -CARBON BOND {12}
40		.~.~ Silicon reactant contains a fused, bridged, or cycloaliphatic ring

DEFINITION

Classification: 528/40

(under subclass 10) Subject matter wherein a containing compound contains at least one fused or bridged ring system or contains at least one ring composed solely of carbon atoms which is nonaromatic.

(1) Note. A bridged or fused ring system for purposes of this subclass requires that a given ring system be attached at two different nuclear atoms of its system to an atom or chain of atoms which, taken together with the two nuclear atoms, forms an additional ring structure.