US PATENT SUBCLASS 428 / 34.4
.~ Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing (e.g., porcelain, brick, cement, etc.)

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

34.1  DF  HOLLOW OR CONTAINER TYPE ARTICLE (E.G., TUBE, VASE, ETC.) {7}
34.4.~ Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing (e.g., porcelain, brick, cement, etc.) {2}
34.5  DF  .~.~> Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound (e.g., fiber glass, mineral fiber, sand, etc.)
34.6  DF  .~.~> Multilayer (continuous layer) {1}

DEFINITION

Classification: 428/34.4

Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing (e.g., porcelain, brick, cement, etc.):

(under subclass 34.1) Article* which contains glass*, ceramic*, or a metal oxide or metal carbide material which is sintered, fused, fired, or calcined.