US PATENT SUBCLASS 419 / 10
.~ Metal and nonmetal in final product

Current as of: June, 1999
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419 /   HD   POWDER METALLURGY PROCESSES

1  DF  POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING {16}
10.~ Metal and nonmetal in final product {5}
11  DF  .~.~> Nonmetal is elemental carbon
12  DF  .~.~> Boride containing
13  DF  .~.~> Nitride containing
14  DF  .~.~> Carbide containing {2}
19  DF  .~.~> Oxide containing {3}

DEFINITION

Classification: 419/10

Metal and nonmetal in final product:

(under subclass 1) Processes which have in the resulting product a free metal and various materials, such as elemental carbon, metal borides, carbides, nitrides, oxides or silicides, or mixtures of same.

(1) Note. This is the generic place for the sintering of mixtures composed of (1) a free metal or a substance which changes chemically to release a free metal (e.g., a metal hydride which decomposes) and (2) nonmetallic materials such as those stated in the indented subclass definitions.

(2) Note. For the purpose of this classification, elemental silicon is considered to be a metal.

SEE OR SEARCH CLASS

51, Abrasive Tool Making Process, Material, or Composition,

309, for abrasive tool making processes, amterials, and compositions comprising a free metal and metal oxides.

76, Metal Tools and Implements, Making, 107.1+, for processes of making dies.

420, Alloys or Metallic Compositions, for a process of producing an alloy which contains a nonmetallic component by melting.