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:
Aug. 08, 2006
Filed:
Feb. 11, 2003
Applicants:
Hiroshi Kanazawa, Chiba, JP;
Hiroshi Sakai, Chiba, JP;
Hiroshi Ohsawa, Chiba, JP;
Kazunori Ohnami, Tokyo, JP;
Inventors:
Hiroshi Kanazawa, Chiba, JP;
Hiroshi Sakai, Chiba, JP;
Hiroshi Ohsawa, Chiba, JP;
Kazunori Ohnami, Tokyo, JP;
Assignee:
Showa Denko Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/66 (2006.01); B32B 5/70 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a magnetic recording medium, which has excellent magnetic characteristics. The present invention also relates to a method for producing a magnetic recording medium where a plurality of targets are repeatedly sputtered several times in sequential order to form non-magnetic and magnetic films on a substrate.