US PATENT SUBCLASS 428 / 458
.~.~ Next to polyester, polyamide or polyimide (e.g., alkyd, glue, or nylon, 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.~.~ Next to polyester, polyamide or polyimide (e.g., alkyd, glue, or nylon, etc.) {1}
459  DF  .~.~.~> Natural source polyamide (e.g., casein, gelatin, etc.)

DEFINITION

Classification: 428/458

(under subclass 457) Product in which a layer adjacent the metal layer contains a polyamide*, polyimide* or polyester*.

(1) Note. Urea-aldehyde is not considered to be a polyamide or polyimide for purposes of classification in this schedule and will be found in the subclass providing for condensation products of aldehyde and ketone*.