US PATENT SUBCLASS 428 / 311.71
.~.~.~.~ Cellulosic

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.~.~.~.~ Cellulosic {1}
311.91  DF  .~.~.~.~.~> Plural cellulosic components

DEFINITION

Classification: 428/311.71

Cellulosic:

(under subclass 311.51) Subject matter wherein the fiber is made of cellulose or a cellulose derivative (e.g., paper, etc.).