US PATENT SUBCLASS 428 / 65.5
.~.~.~ Protective layer containing

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

64.1  DF  CIRCULAR SHEET OR CIRCULAR BLANK {8}
64.2  DF  .~ Recording medium or carrier {5}
65.3  DF  .~.~ Magnetic recording medium or carrier {4}
65.5.~.~.~ Protective layer containing

DEFINITION

Classification: 428/65.5

Protective layer containing:

(under subclass 65.3) Subject matter wherein the magnetic recording medium or carrier layer is covered by a resistant layer; e.g., resistant to heat, cold, oxidation, pollution, etc.