US PATENT SUBCLASS 264 / 43
.~.~ Including vitrification or firing

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

41  DF  PORE FORMING IN SITU (E.G., FOAMING, ETC.) {6}
42  DF  .~ Of inorganic materials {1}
43.~.~ Including vitrification or firing {1}
44  DF  .~.~.~> Burning out components to form pores

DEFINITION

Classification: 264/43

(under subclass 42) Processes wherein the inorganic material is heated to a sintering or fusion temperature.

SEE OR SEARCH THIS CLASS, SUBCLASS:

603+, for vitrifying or sintering processes of shaped bodies.