US PATENT SUBCLASS 428 / 527
.~.~.~ Modified or regenerated cellulose

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
524  DF  .~ Of aldehyde or ketone condensation product {2}
526  DF  .~.~ Next to cellulosic {3}
527.~.~.~ Modified or regenerated cellulose

DEFINITION

Classification: 428/527

(under subclass 526) Product in which the cellulosic material is chemically modified (e.g., esterified) or precipitated from a solution.

(1) Note. Viscose, cellophane, cellulose acetate, cellulose nitrate and pyroxylin are exemplary of modified or regenerated cellulose.