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:
Nov. 09, 1995
Applicant:
Inventors:
Assignee:
Kao Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428212 ; 428336 ; 428422 ; 4286 / ; 4286 / ; 428900 ;
Abstract
A magnetic recording medium comprising a substrate having thereon at least a magnetic layer and a lubricant layer and a process for producing the same are disclosed, in which the lubricant layer is an uppermost layer and comprises a perfluoropolyether lubricant having a number average molecular weight of 800 to 30,000 and represented by formula (I):