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:
Feb. 18, 1997
Filed:
May. 10, 1994
Applicant:
Inventors:
Kazuyuki Hayashi, Hiroshima, JP;
Keisuke Iwasaki, Hiroshima, JP;
Yasuyuki Tanaka, Hiroshima, JP;
Minoru Ohsugi, Hiroshima, JP;
Hiroko Morii, Hiroshima, JP;
Mineko Sakoda, Hiroshima, JP;
Norio Sugita, Hiroshima, JP;
Masaaki Maekawa, Hiroshima, JP;
Assignee:
Toda Kogyo Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
428144 ; 428145 ; 428336 ; 428403 ; 428404 ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 428900 ;
Abstract
The disclosure describes a non-magnetic undercoating layer for a magnetic recording medium, coated on the surface of a non-magnetic substrate comprising: