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. 16, 2009
Filed:
Jul. 18, 2002
Applicants:
Sohmei Endoh, Tokyo, JP;
Tadao Suzuki, Tokyo, JP;
Jun Shimizu, Tokyo, JP;
Jun Nakano, Tokyo, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical recording/reproducing medium having grooves formed along recording tracks and used for recording/reproducing when irradiated with light L with a specified wavelength λ, wherein the track pitch p of a groove is at least 200 nm and up to 350 nm, and a ratio w/p between the width wof a groove and a track pitch p is at least 0.24 and up to 0.67.
Endoh, Sohmei. (2009). Optical recording medium having a relationship between groove width and track pitch (U.S. Patent No. 7548505). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7548505
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile