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:
Nov. 11, 2003
Filed:
Sep. 20, 2001
Applicant:
Inventors:
Shuichi Okubo, Tokyo, JP;
Tatsunori Ide, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/24 ;
U.S. Cl.
CPC ...
G11B 7/24 ;
Abstract
An optical storage medium includes a substrate having grooves and lands. A first dielectric layer overlies the substrate. A recording layer overlies the first dielectric layer. A second dielectric layer overlies the recording layer, and a light transmitting layer overlying the second dielectric layer. Each of the grooves is larger in width than adjacent two of the lands.