US PATENT SUBCLASS 219 / 121.41
.~.~.~.~.~ Methods

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
121.11  DF  .~ By arc {16}
121.36  DF  .~.~ Using plasma {8}
121.39  DF  .~.~.~ Cutting {2}
121.4  DF  .~.~.~.~ Etching {3}
121.41.~.~.~.~.~ Methods

DEFINITION

Classification: 219/121.41

Methods:

(under subclass 121.4) Subject matter relating to the process of eroding and abrading a workpiece with a plasma torch.

SEE OR SEARCH CLASS

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

345, for differential etching apparatus.

204, Chemistry: Electrical and Wave Energy,

192.32+, for a sputter etching process.

216, Etching a Substrate: Processes,

67+, for chemically etching a substrate with a plasma. 313, Electric Lamp and Discharge Devices,

231.31+, fluid supply with plasma devices.

315, Electric Lamp and Discharge Devices: Systems,

111.21+, for plasma generating systems.