US PATENT SUBCLASS 428 / 326
.~.~ Cellulosic (e.g., wood, paper, cork, rayon, etc.)

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}
323  DF  .~ Including a second component containing structurally defined particles {7}
326.~.~ Cellulosic (e.g., wood, paper, cork, rayon, etc.)

DEFINITION

Classification: 428/326

(under subclass 323) Product wherein the particles comprise carbohydrate material derived from the structural matter of plant life, usually from the stems thereof.

(1) Note. This carbohydrate is commonly termed cellulose* and may be further treated to yield esterified, modified or regenerated substances such as rayon* or viscose*.