US PATENT SUBCLASS 428 / 311.91
.~.~.~.~.~ Plural cellulosic components

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}
311.11  DF  .~.~ Void-containing component has a continuous matrix of fibers only (e.g., porous paper, etc.) {2}
311.51  DF  .~.~.~ Fibers of defined composition {1}
311.71  DF  .~.~.~.~ Cellulosic {1}
311.91.~.~.~.~.~ Plural cellulosic components

DEFINITION

Classification: 428/311.91

Plural cellulosic components:

(under subclass 311.71) Subject matter wherein the composite comprises two or more layers of fibrous cellulose material.