US PATENT SUBCLASS 428 / 292.1
.~ Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity


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}
292.1.~ Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity {7}
292.4  DF  .~.~> Fiber-containing wood product (e.g., hardboard, lumber, or wood board, etc.)
292.7  DF  .~.~> Including paper layer
293.1  DF  .~.~> Fiber embedded in a metal matrix
293.4  DF  .~.~> Fiber embedded in a ceramic, glass, or carbon matrix {2}
294.7  DF  .~.~> Fiber embedded in a layer derived from a water-settable material (e.g., cement, gypsum, etc.)
295.1  DF  .~.~> Fiber embedded in or on the surface of a natural or synthetic rubber matrix {4}
297.4  DF  .~.~> Fiber embedded in or on the surface of a polymeric matrix {5}


DEFINITION

Classification: 428/292.1

Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity:

(under subclass 221) Product wherein a fiber-containing web or sheet comprises of one or more structurally defined fibers embedded in or on the surface of a matrix wherein the fibers are not interengaged with one another or formed into a fabric having structural integrity prior to association with the matrix material, the fiber-containing web or sheet being neither paper nor of specified porosity.

(1) Note. Matrix materials containing fiber as a filler material do not belong in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

311.11, 311.31, 311.51, 311.71, and 311.91, for articles of specified porosity wherein the article comprises solely a continuous matrix of fibers (e.g., porous paper, etc.).

317.9, for articles of specified porosity wherein the article contains fibers.

SEE OR SEARCH CLASS

162, Paper Making and Fiber Liberation,

100, 231, for paper products, per se.