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. 06, 2006
Filed:
Dec. 31, 2003
Applicants:
Koichiro Kishima, Kanagawa, JP;
Isao Ichimura, Tokyo, JP;
Yuji Kuroda, Tokyo, JP;
Kiyoshi Osato, Chiba, JP;
Inventors:
Koichiro Kishima, Kanagawa, JP;
Isao Ichimura, Tokyo, JP;
Yuji Kuroda, Tokyo, JP;
Kiyoshi Osato, Chiba, JP;
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 3/70 (2006.01);
U.S. Cl.
CPC ...
Abstract
An anti-reflection coating layer is formed on the surface portion of a recording medium. This enables to obtain a margin for the air gap thickness change when recording/reproducing an information signal using the 'near-field technique' as well as minimize a data loss caused by a collision. Furthermore, the present invention provides a film configuration which can easily be produced.