US PATENT SUBCLASS 164 / 66.1
.~.~ Applying an inert or reducing gaseous atmosphere to work

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}
66.1.~.~ Applying an inert or reducing gaseous atmosphere to work {2}
67.1  DF  .~.~.~> Atmosphere effected by chemical reaction
68.1  DF  .~.~.~> While melting casting material

DEFINITION

Classification: 164/66.1

Applying an inert or reducing gaseous atmosphere to work:

(under subclass 47) Process wherein the work material is subjected to an inert or reducing gaseous environment either before, during, or after charging the casting material to a mold.

(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 metal.

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.