US PATENT SUBCLASS 419 / 27
.~.~ Impregnation

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

1  DF  POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING {16}
26  DF  .~ Post sintering operation {3}
27.~.~ Impregnation

DEFINITION

Classification: 419/27

Impregnation:

(under subclass 26) Processes in which the interstices between the sintered particles are at least partially filled by an additional liquid or solid material which was not present during or prior to the sintering step.