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:
Apr. 12, 2005
Filed:
Feb. 05, 2003
Applicants:
Noriaki Oshima, Kanagawa-ken, JP;
Hideki Oono, Yamagata-ken, JP;
Keiichiro Nishizawa, Kanagawa-ken, JP;
Inventors:
Noriaki Oshima, Kanagawa-ken, JP;
Hideki Oono, Yamagata-ken, JP;
Keiichiro Nishizawa, Kanagawa-ken, JP;
Assignee:
Tosoh Corporation, Yamaguchi-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B005/82 ;
U.S. Cl.
CPC ...
Abstract
An optical recording medium with a circular body including a substrate, a recording layer and a dielectric layer on the substrate, the circular body having a recording/reproducing area and a hub attached to a surface of the circular body. When the circular body stands vertically, the recording/reproducing area of the hub-attached surface is curved in a convex form, and the flexural amount is from 5 μm to 100 μm.