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:
Jul. 07, 1998
Filed:
Nov. 22, 1996
Toshio Yamazaki, Tochigi-ken, JP;
Shigeaki Wakana, Tochigi-ken, JP;
Satoshi Nagai, Tochigi-ken, JP;
Tetsutaro Inoue, Tochigi-ken, JP;
Kao Corporation, Tokyo, JP;
Abstract
A magnetic recording medium comprising a nonmagnetic substrate, an intermediate layer provided on the nonmagnetic substrate, and a magnetic layer provided on the intermediate layer, wherein the magnetic layer contains, as a lubricant, (A) a fatty acid ester derived from a straight-chain or branched aliphatic alcohol having 3 to 7 carbon atoms and a straight-chain or branched fatty acid having 12 to 18 carbon atoms and (B) a fatty acid ester derived from a straight-chain or branched aliphatic alcohol having 8 to 14 carbon atoms and a straight-chain or branched fatty acid having 12 to 18 carbon atoms.