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:
Apr. 21, 1998
Filed:
May. 17, 1991
Applicant:
Inventor:
Hirofumi Kondo, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428422 ; 4286 / ; 428900 ;
Abstract
Disclosed herein is a magnetic recording medium comprising a nonmagnetic substrate, a magnetic thin film layer on said substrate, and a lubricant layer on said magnetic layer, wherein said lubricant layer contains a compound having the formula: