US PATENT SUBCLASS 423 / 439-- .~ Binary compound (e.g., carbide, etc.)

US PATENT SUBCLASS 423 / 439
.~ Binary compound (e.g., carbide, etc.)

Current as of: June, 1999
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423 /	HD	CHEMISTRY OF INORGANIC COMPOUNDS

414	DF	CARBON OR COMPOUND THEREOF {3}
439		.~ Binary compound (e.g., carbide, etc.) {3}
440	DF	.~.~> Refractory metal containing
441	DF	.~.~> Calcium containing {1}
443	DF	.~.~> Disulfide {1}

DEFINITION

Classification: 423/439

(under subclass 414) Products or processes wherein the product contains carbon and only one other element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

345, for binary compounds which contain only carbon and silicon.

415.1, for carbon monoxide.

SEE OR SEARCH CLASS

148, Metal Treatment, 16.5, and 316+ for processes for making case hardened (carbided) metals and the corresponding products, the intention being to form such case hardened metal, not to form a definite compound for recovery; see reference to Class 148 in line and Search Note Section of the Class Definition.