US PATENT SUBCLASS 428 / 404-- .~.~.~ Silicic or refractory material containing (e.g., tungsten oxide, glass, cement, etc.)

US PATENT SUBCLASS 428 / 404
.~.~.~ Silicic or refractory material containing (e.g., tungsten oxide, glass, cement, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999 Terms of Use

428 /	HD	STOCK MATERIAL OR MISCELLANEOUS ARTICLES

357	DF	COATED OR STRUCTUALLY DEFINED FLAKE, PARTICLE, CELL, STRAND, STRAND PORTION, ROD, FILAMENT, MACROSCOPIC FIBER OR MASS THEREOF {5}
402	DF	.~ Particulate matter (e.g., sphere, flake, etc.) {3}
403	DF	.~.~ Coated {2}
404		.~.~.~ Silicic or refractory material containing (e.g., tungsten oxide, glass, cement, etc.) {2}
405	DF	.~.~.~.~> Silane, siloxane or silicone coating
406	DF	.~.~.~.~> Glass particles or spheres

DEFINITION

Classification: 428/404

(under subclass 403) Product in which the particulate matter comprises (1) silicon or (2) a material containing a metal* from Group IV B, V B or VI B of the periodic system, known as refractory metals and consisting of Ti, Zi, Hf, V, Nb, Ta, Cr, Mo and W.

(1) Note. The silicon or the refractory metal* can be present as either the free element or as a compound containing the element.

(2) Note. The silicic or refractory material can be present as either the base* (substrate*) or the coating.