US PATENT SUBCLASS 264 / 666
.~.~ Plural sintering steps having specified temperature (e.g., presintering, etc.)

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

603  DF  OUTSIDE OF MOLD SINTERING OR VITRIFYING OF SHAPED INORGANIC ARTICLE OR PREFORM {30}
653  DF  .~ Including plural heating steps {3}
666.~.~ Plural sintering steps having specified temperature (e.g., presintering, etc.)

DEFINITION

Classification: 264/666

Plural sintering steps having specified temperature (e.g., presintering, etc.):

(under subclass 653) Process which has plural sintering steps at least one of which occurs at a specified temperature.