US PATENT SUBCLASS 264 / 48
.~ Including surface treatment of porous body

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}
48.~ Including surface treatment of porous body

DEFINITION

Classification: 264/48

(under subclass 41) Processes wherein the exterior or outside surface of a porous body is subjected to a chemical or physical treatment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

232+, and 340+, for processes of treating nonporous bodies.