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. 26, 1996
Filed:
Nov. 01, 1994
Applicant:
Inventors:
Yoshiaki Kai, Neyagawa, JP;
Naoko Mizuno, Hirakata, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
4286 / ; 4286 / ; 4286 / ; 428695 ; 428900 ;
Abstract
A magnetic recording medium comprising a lubricating layer comprising a fluorine-containing alkylsuccinic acid diester of the formula: ##STR1## wherein R.sub.1 is an aliphatic alkyl or alkenyl group, and one of R.sub.2 and R.sub.3 is a fluoroalkylether group and the other is a fluoroalkyl group, a fluoroalkenyl group, a fluorophenyl group, an aliphatic alkyl group or an aliphatic alkenyl group, which has excellent lubricity in an atmosphere having low to high humidity.