US PATENT SUBCLASS 148 / 687
.~.~.~ Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent or denitriding agent, etc.) or vacuum


Current as of: June, 1999
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148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
559  DF  .~ Heating or cooling of solid metal {22}
679  DF  .~.~ Copper(Cu) or copper base alloy {4}
687.~.~.~ Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent or denitriding agent, etc.) or vacuum


DEFINITION

Classification: 148/687

Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent, denitriding agent, etc.) or vacuum:

Process under 679 wherein a vacuum or a treating agent (e.g., heat exchange agent, protective agent, decarburizing agent, denitriding agent, etc.) specified as an element, compound, or composition other than air or water is utilized to treat the copper or copper alloy.

SEE OR SEARCH THIS CLASS, SUBCLASS:

206, for carburizing or nitriding of metal using an externally supplied source.

240, for processes of coating metal utilizing a reactive agent that reacts with the metal substrate.