US PATENT SUBCLASS 264 / 642
.~ Shaping or treating of multilayered, impregnated, or composite-structured article

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}
642.~ Shaping or treating of multilayered, impregnated, or composite-structured article {2}
643  DF  .~.~> Shaping followed by article coating or impregnating
644  DF  .~.~> Clay containing block, tile, or brick

DEFINITION

Classification: 264/642

Shaping or treating of multilayered, impregnated, or composite-structured article:

(under subclass 603) Process which includes forming or treating of an article or preform having plural layers, forming an infused or permeated article, or having mechanically engaged macrostructural portions.