The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 1994
Filed:
Jul. 06, 1992
Applicant:
Inventors:
Assignee:
Diafoil Hoechst Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428141 ; 428212 ; 428213 ; 428216 ; 428323 ; 428327 ; 428328 ; 428329 ; 428330 ; 428331 ; 428336 ; 428413 ; 4284259 ; 428480 ; 428481 ; 428483 ; 428522 ; 428523 ; 428532 ; 4286 / ; 4286 / ; 4286 / ; 4286 / ;
Abstract
Disclosed herein is a magnetic recording medium comprising: a stretched polyethylene-2,6-naphthalate multilayered film having a high-roughness surface and a low-roughness surface; a coating layer (A) having specific surface properties and being formed on the high-roughness surface of said multilayered film; a coating layer (B) having a specific surface property and being formed on the low-roughness surface of said multilayered film; and a thin ferromagnetic metal film formed on said coating layer (B).