US PATENT SUBCLASS 164 / 475
.~.~.~ With inert or reducing gaseous atmosphere

Current as of: June, 1999
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164 /   HD   METAL FOUNDING

1  DF  PROCESS {6}
47  DF  .~ Shaping liquid metal against a forming surface {26}
459  DF  .~.~ Continuous or semicontinuous casting {20}
475.~.~.~ With inert or reducing gaseous atmosphere

DEFINITION

Classification: 164/475

With inert or reducing gaseous atmosphere:

(under subclass 459) Process wherein work material is subjected to an inert or reducing gaseous environment.

(1) Note. An ambient atmosphere which may be inert is not included herein.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, various subclasses for processes for gaseous treating of metals.

148, Metal Treatment,

633+, or 712+ for combined processes of significant heat treatment of solid or semi-solid metal and treatment with a special gaseous composition.