US PATENT SUBCLASS 419 / 53
.~ Plural heating steps including sintering

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

1  DF  POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING {16}
53.~ Plural heating steps including sintering {2}
54  DF  .~.~> Different temperatures
55  DF  .~.~> Additional operation between heating steps

DEFINITION

Classification: 419/53

Plural heating steps including sintering:

(under subclass 1) Processes which include a plurality of discrete heating steps, at least one of which must be a sintering step.