US PATENT SUBCLASS 373 / 22
.~ Direct furnace (i.e., plasma flame impinges on the melt)

Current as of: June, 1999
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373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

18  DF  PLASMA FURNACE DEVICE {3}
22.~ Direct furnace (i.e., plasma flame impinges on the melt) {3}
23  DF  .~.~> Expanded arc column
24  DF  .~.~> Sidewall mounted plasmatron
25  DF  .~.~> Control system

DEFINITION

Classification: 373/22

Direct furnace (i.e., plasma flame impinges on the melt):

(under subclass 18) Subject matter wherein the plasma flame is in contact with the material being melted.

SEE OR SEARCH CLASS

204, Chemistry: Electrical and Wave Energy,

164+, for chemical processes employing a plasma.

376, Induced Nuclear Reactions: Processes, Systems, and Elements,

100+, for means utilizing plasma to produce a thermonuclear reaction.