US PATENT SUBCLASS 75 / 238-- .~.~.~.~.~ Nonmetal is Boron(B) or Nitrogen(N)

US PATENT SUBCLASS 75 / 238
.~.~.~.~.~ Nonmetal is Boron(B) or Nitrogen(N)

Current as of: June, 1999
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75 /	HD	SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

300	DF	COMPOSITIONS {5}
228	DF	.~ Consolidated metal powder compositions {4}
230	DF	.~.~ With nonmetal constituent - Silicon(Si) considered a metal (e.g., cermet, etc.) {5}
236	DF	.~.~.~ Carbide containing {4}
237	DF	.~.~.~.~ With another nonmetal {1}
238		.~.~.~.~.~ Nonmetal is Boron(B) or Nitrogen(N)

DEFINITION

Classification: 75/238

Nonmetal is Boron (B) or Nitrogen (N):

(under subclass 237) Composition in which the nonmetal other than carbon is restricted to boron and/or nitrogen.

(1) Note. This definition is meant to include boron carbide as the sole nonmetal component, as well as metal-carbide compositions containing boron nitride as the only additional nonmetal component.

SEE OR SEARCH THIS CLASS, SUBCLASS:

244, for a consolidated metal powder composition containing B or N without carbide.

SEE OR SEARCH CLASS

419, Powder Metallurgy Processes,

12, for powder metallurgy processes with sintering which include a boride compound; and subclass 13 for similar processes which include a nitride compound.