US PATENT SUBCLASS 148 / 514
.~ Treating consolidated metal powder, per se (i.e., no sintering or compacting step present)

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}
514.~ Treating consolidated metal powder, per se (i.e., no sintering or compacting step present)

DEFINITION

Classification: 148/514

Treating consolidated metal powder, per se (i.e., no sintering or compacting step present):

(under subclass 95) Process wherein a metal or metal alloy powder in a preconsolidated state is treated and there is no sintering or no consolidating step present.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, etc.,

228+, for consolidated metal powder compositions.

419, Powder Metallurgy Processes, appropriate subclasses for processes of consolidating metal powder compositions having a sintering or compacting step therein and which may additionally have post-consolidating treatment therein.

(1) Note. If a sintering or compacting step is present, placement goes to Class 419 even if there is a subsequent treatment controlling the microstructure or chemical properties. However, if in the recited process the starting material is preconsolidated and no further sintering or consolidating is included, Class 148 will control.