US PATENT SUBCLASS 419 / 36
.~.~ Addition of fugitive material

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}
36.~.~ Addition of fugitive material {1}
37  DF  .~.~.~> Additional material is solid

DEFINITION

Classification: 419/36

Addition of fugitive material:

(under subclass 30) Processes wherein a fugitive ingredient is incorporated in the powder admixture.

SEE OR SEARCH THIS CLASS, SUBCLASS:

40, for processes which use a fugitive liquid carrier vehicle to make a slurry. If the admixture uses a carrier vehicle and the produced preform is subjected to additional mechanical compaction, the patent is placed here (in subclass 36).