US PATENT SUBCLASS 428 / 508
.~.~.~ Regenerated or modified cellulose

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
500  DF  .~ Of addition polymer from unsaturated monomers {6}
507  DF  .~.~ Next to cellulosic {2}
508.~.~.~ Regenerated or modified cellulose {2}
509  DF  .~.~.~.~> Addition polymer of hydrocarbon(s) only
510  DF  .~.~.~.~> Where addition polymer is an ester or halide

DEFINITION

Classification: 428/508

(under subclass 507) Product in which the cellulosic material is chemically modified (e.g., esterified, etc.) or precipitated from a solution (i.e., regenerated).

(1) Note. Examples of modified or regenerated cellulose are: viscose*, cellophane*, cellulose*, acetate, cellulose* nitrate and pryoxylin*.