US PATENT SUBCLASS 264 / 662
.~.~ Including diverse heating of article subsequent to sintering

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}
662.~.~ Including diverse heating of article subsequent to sintering {2}
663  DF  .~.~.~> Subsequent hot pressing (i.e., press molding or by gas pressure) {1}
665  DF  .~.~.~> Silicon nitride containing product

DEFINITION

Classification: 264/662

Including diverse heating of article subsequent to sintering:

(under subclass 653) Process which includes at least one nonsintering heating step that follows a sintering or firing step.