US PATENT SUBCLASS 264 / 44
.~.~.~ Burning out components to form pores

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  DF  .~.~ Including vitrification or firing {1}
44.~.~.~ Burning out components to form pores

DEFINITION

Classification: 264/44

(under subclass 43) Processes wherein the pores are formed by burning out an entrained combustible material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

610, for processes directed to firing, sintering or vitrifying in which an embedded part is burned out to leave a void.

656+, wherein a binder is used to hold together particulate material prior to firing and which is removed during firing.