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:
Jun. 16, 1998
Filed:
Sep. 17, 1996
Applicant:
Inventors:
Katsumi Sasaki, Ichikaimachi, JP;
Noriyuki Kitaori, Ichikaimachi, JP;
Osamu Yoshida, Ichikaimachi, JP;
Junko Ishikawa, Ichikaimachi, JP;
Katsumi Endho, Ichikaimachi, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428408 ; 4286 / ; 4286 / ; 428900 ;
Abstract
In order to improve a corrosion resistance and a running stability of a magnetic recording medium having a protective layer comprising a diamond-like carbon thin film and reduce cupping, the protective layer formed on the magnetic layer is composed of the diamond-like carbon thin film containing a material which fluoresces.