US PATENT SUBCLASS 44 / 559-- .~.~ With gypsum or silicon-containing material (e.g., clay, portland cement, water glass, etc.)

US PATENT SUBCLASS 44 / 559
.~.~ With gypsum or silicon-containing material (e.g., clay, portland cement, water glass, etc.)

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

Internet Version by PATENTEC © 1999 Terms of Use

44 /	HD	FUEL AND RELATED COMPOSITIONS

550	DF	CONSOLIDATED SOLIDS (E.G., BRIQUETTE, ETC.) {5}
551	DF	.~ Containing specified binder {15}
559		.~.~ With gypsum or silicon-containing material (e.g., clay, portland cement, water glass, etc.) {4}
560	DF	.~.~.~> With nonfibrous carbohydrate (e.g., molasses, starch, etc.)
561	DF	.~.~.~> With pitch, tar, tar oil, or bitumen
562	DF	.~.~.~> With paraffin, liquid hydrocarbon, or wax hydrocarbon
563	DF	.~.~.~> With fibrous vegetable material, resin, or organic -C(=O)- compound (e.g., rosin, tall oil, tallow, pine resin, etc.)

DEFINITION

Classification: 44/559

With gypsum or silicon-containing material (e.g., clay, portland cement, water glass, etc.):

(under subclass 551) Subject matter wherein gypsum or a silicon-containing material is a component in a consolidated solid fuel composition.

(1) Note. The gypsum or silicon-containing material normally, but not necessarily, serves a binding function.

(2) Note. Gypsum, calcium sulfate, is also known as plaster of paris.

(3) Note. Cement, without further specification, shall be considered a silicon-containing material; there do exist, however, nonsiliceous cements, and such cements specified as being nonsiliceous shall be classified commensurate with their specified nature.