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. 15, 2008
Filed:
Jul. 17, 2002
Applicants:
Akira Iso, Nagano, JP;
Makoto Isozaki, Nagano, JP;
Inventors:
Akira Iso, Nagano, JP;
Makoto Isozaki, Nagano, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 14/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetic recording medium using a plastic substrate as a non-magnetic substrate includes an adhesive layer that prevents film expansion even under severe conditions. The adhesive layer has a chemical affinity to the plastic substrate and is formed on the surface of the plastic substrate, and an underlayer and subsequent layers are formed over the adhesive layer. A polymerized carbon film is used as the adhesive layer.