US PATENT SUBCLASS 264 / 658
.~.~.~ Including reaction of precursor to form new inorganic compound or composition

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}
658.~.~.~ Including reaction of precursor to form new inorganic compound or composition {1}
659  DF  .~.~.~.~> Forming nitride or oxynitride containing product

DEFINITION

Classification: 264/658

Including reaction of precursor to form new inorganic compound or composition:

(under subclass 654) Process wherein decomposition or combination of original material to form a new compound or composition occurs.