US PATENT SUBCLASS 428 / 459
.~.~.~ Natural source polyamide (e.g., casein, gelatin, etc.)

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
457  DF  .~ Of metal {8}
458  DF  .~.~ Next to polyester, polyamide or polyimide (e.g., alkyd, glue, or nylon, etc.) {1}
459.~.~.~ Natural source polyamide (e.g., casein, gelatin, etc.)

DEFINITION

Classification: 428/459

(under subclass 458) Product in which the layer comprises a polyamide and is derived from a natural source, e.g., glue*, from milk or a vegetable, or albumin or gelatin from animal tissue.