US PATENT SUBCLASS 422 / 186.06
.~.~.~.~ Surface is metal

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

129  DF  CHEMICAL REACTOR {28}
186  DF  .~ With means applying electromagnetic wave energy or corpuscular radiation to reactants for initiating or perfecting chemical reaction {3}
186.04  DF  .~.~ Electrostatic field or electrical discharge {4}
186.05  DF  .~.~.~ Treating surface of solid substrate {1}
186.06.~.~.~.~ Surface is metal

DEFINITION

Classification: 422/186.06

Surface is metal:

(under subclass 186.05) Subject matter wherein the solid is a metal.

(1) Note. Particularly included in this subclass is apparatus for ion nitriding (or other ion bombardment treatment) of metal workpieces.

SEE OR SEARCH CLASS

148, Metal Treatment, appropriate subclasses for processes of heat treatment of solid metal to modify or maintain the internal physical structure (i.e., microstructure) or chemical property of metal. Particularly, see

222, for processes of carburizing or nitriding of metal from an external source of carbon or nitrogen and subclass 239 for a process of ion implantation of solid metal. Also, see Class 148, subclasses 224, 525, and 565 for other processes which use electromagnetic wave energy, plasma, electron arcs, or beams to treat solid metal for purposes of that class.