US PATENT SUBCLASS 428 / 536
.~.~.~.~ Regenerated or modified

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
532  DF  .~ Of carbohydrate {3}
533  DF  .~.~ Of cellulosic next to another carbohydrate {1}
534  DF  .~.~.~ Cellulosic next to another cellulosic {2}
536.~.~.~.~ Regenerated or modified

DEFINITION

Classification: 428/536

(under subclass 534) Product in which at least one of the adjacent cellulosic layers is chemically modified or precipitated from solution.

(1) Note. Patents claiming a laminate of cellulose acetate, cellulose nitrate, cellulose ether or pyroxilin* will be collected here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

439, for cellulosic ester next to glass and subclass 527 for modified or regenerated cellulose next to an aldehyde or ketone condensation product.

535, for a product in which regenerated or modified cellulose may be adjacent to a layer of wood or paper.