US PATENT SUBCLASS 264 / 661
.~.~.~ With drying, calcining, or sintering of non-shaped particulate

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}
654  DF  .~.~ Including diverse heating of article prior to outside-mold sintering or vitrifying {5}
661.~.~.~ With drying, calcining, or sintering of non-shaped particulate

DEFINITION

Classification: 264/661

With drying, calcining, or sintering of non-shaped particulate:

(under subclass 654) Process which includes heating of nonshaped loose particular material outside of a mold for purpose of drying, calcining, or sintering.