US PATENT SUBCLASS 228 / 220
.~.~.~.~ Reducing gas

Current as of: June, 1999
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228 /   HD   METAL FUSION BONDING

101  DF  PROCESS {38}
214  DF  .~ With protecting of work or filler or applying flux {5}
218  DF  .~.~ Using gas, vapor, vacuum, or reactive flame {2}
219  DF  .~.~.~ Gas or vapor {1}
220.~.~.~.~ Reducing gas

DEFINITION

Classification: 228/220

(under subclass 219) Process wherein the atmosphere replacing the normal atmosphere reacts with any available oxygen to eliminate that gas as an available material from the environment, thereby preventing oxidation of the work or filler.