US PATENT SUBCLASS 264 / 680
.~.~ Clay containing block, tile, or brick

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}
679  DF  .~ Of clay containing material {1}
680.~.~ Clay containing block, tile, or brick

DEFINITION

Classification: 264/680

Clay containing block, tile, or brick:

(under subclass 679) Process wherein articles or preforms undergoing treatment are, often hand-sized, usually rectangular or square, building blocks of material containing clay (i.e., an earthy material that is composed of hydrous aluminum silicates and other materials that are plastic when moist and hard when fired) identified as a block, tile, or brick.

(1) Note. Lacking an indication to the contrary, the mere use of block, tile, or brick will be considered proper for this subclass, whether or not disclosed to contain clay.

SEE OR SEARCH THIS CLASS, SUBCLASS:

601, for heat polishing or glazing of clay containing block, tile, or brick.

609, for a particular or specific manner of positioning, arranging, or conveying of polural clay containing blocks, tiles, or bricks.

644, for process of shaping or treating multi-layered or composite block, tile, or brick combined with sintering, vitrifying, or firing outside the mold.