US PATENT SUBCLASS 101 / 455
.~.~.~ Surface contains silica or glass

Current as of: June, 1999
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101 /   HD   PRINTING

130  DF  PLANOGRAPHIC {8}
453  DF  .~ Lithographic printing plates {2}
454  DF  .~.~ Including metal support having printing or non-printing surface {4}
455.~.~.~ Surface contains silica or glass

DEFINITION

Classification: 101/455

(under subclass 454) Articles or devices in which the ink-repellent or ink-receptive layer or impregnation includes (A) fused silica, (B) a mixture of fused silica and alkali or alkaline silicates, or (C) the salts of the silicic acids, commonly known as glass.