US PATENT SUBCLASS 428 / 319.1
.~.~.~ Inorganic

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

221  DF  WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT {9}
304.4  DF  .~ Composite having voids in a component (e.g., porous, cellular, etc.) {14}
318.4  DF  .~.~ With nonvoid component of specified composition {3}
319.1.~.~.~ Inorganic

DEFINITION

Classification: 428/319.1

Inorganic:

(under subclass 318.4) Subject matter in which the nonvoid component is free from carbon atoms or contains carbon atoms only as elemental carbon, as a carbide, carbonate, cyanide or cyanate.