US PATENT SUBCLASS 148 / 565
.~.~ Utilizing wave energy (e.g., laser, electromagnetic, etc.) plasma or electron arc or beam

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}
565.~.~ Utilizing wave energy (e.g., laser, electromagnetic, etc.) plasma or electron arc or beam

DEFINITION

Classification: 148/565

Utilizing wave energy (e.g., laser, electromagnetic, etc.), plasma or electron arc or beam:

(under subclass 559) Process which utilizes wave energy (e.g., laser, electromagnetic, etc.), plasma or electron arc or beam for (1) modifying or maintaining the internal physical structure (i.e., microstructure) or chemical properties of metal or metal alloy or (2) in a combined process including a step of modifying or maintaining the internal physical structure or chemical properties of a metal or metal alloy, the use of wave energy, plasma, electron arc, or beam for any purpose.

SEE OR SEARCH THIS CLASS, SUBCLASS:

512, for process of using wave energy wherein the surface of the metal is melted as defined for the purposes thereunder.

525, for processes of utilizing electromagnetic wave energy or electron arc or beam to treat layered metal workpieces or articles.

SEE OR SEARCH CLASS

219, Electric Heating, appropriate subclasses for process of heating metal, per se, or for process of working metal that utilizes nonsignificant heating of the metal as set forth hereinabove in the line to the metal working classes.