US PATENT SUBCLASS 419 / 35
.~.~ Coating


Current as of: June, 1999
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419 /   HD   POWDER METALLURGY PROCESSES

1  DF  POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING {16}
30  DF  .~ Powder pretreatment (prior to consolidation or sintering) {6}
35.~.~ Coating


DEFINITION

Classification: 419/35

Coating:

(under subclass 30) Processes in which at least some particles of powder or particulate material become covered by a layer of some other material, other than a fugitive material.

SEE OR SEARCH CLASS

148, Metal Treatment, particularly

514, for processes of pre-treatment or post-treatment of a previously sintered or compacted consolidated powder metal starting material to modify or maintain the internal physical structure (i.e., microstructure) or chemical properties of metal combined with a coating operation and wherein there is

no actual sintering or compacting operation present.

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,

80+, for electrolytic coating processes not claimed in combination with a specific sintering operation.

427, Coating Processes, 212+, for processes of coating, flakes, particles, or granules, per se, especially subclass 216 when the base is metal.