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:
Feb. 26, 2008
Filed:
Mar. 09, 2004
Applicants:
Yutaka Yamanaka, Tokyo, JP;
Ryuichi Katayama, Tokyo, JP;
Takeharu Shibatoko, Tokyo, JP;
Masatsugu Ogawa, Tokyo, JP;
Daisuke Eto, Tokyo, JP;
Chosaku Noda, Tokyo, JP;
Hiroharu Satoh, Tokyo, JP;
Hideaki Ohsawa, Tokyo, JP;
Inventors:
Yutaka Yamanaka, Tokyo, JP;
Ryuichi Katayama, Tokyo, JP;
Takeharu Shibatoko, Tokyo, JP;
Masatsugu Ogawa, Tokyo, JP;
Daisuke Eto, Tokyo, JP;
Chosaku Noda, Tokyo, JP;
Hiroharu Satoh, Tokyo, JP;
Hideaki Ohsawa, Tokyo, JP;
Assignees:
Kabushiki Kaisha Toshiba, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an optical disk medium, land recording tracks () are coupled by first and second coupling portions (and) at a particular radial position to form a tilt detecting mark SM.