US PATENT SUBCLASS 8 / 523
.~.~ Silica or calcareous substrate, e.g., glass, etc.

Current as of: June, 1999
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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

506  DF  NONTEXTILE, DYEING PROCESS OR PRODUCT, INCLUDING INORGANIC FIBER {12}
522  DF  .~ Inorganic substrate {1}
523.~.~ Silica or calcareous substrate, e.g., glass, etc.

DEFINITION

Classification: 8/523

Silica or calcareous substrate, e.g., glass, etc:

(under subclass 522) Subject matter for coloring a calcareous or siliceous substrate.

(1) Note. Included herein are, e.g., bone, pearl, chips, stone, sand, plaster of Paris, gypsum, plasterboard, glass, etc.

SEE OR SEARCH CLASS

65, Glass Manufacturing,

430+, and 443+ for a process of coating of glass filaments or fibers with a colored material combined with the step of forming the filaments or fibers.

106, Compositions: Coating or Plastic, particularly

712, for the incorporation of coloring matter in the formation of artificial stone.