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:
Jan. 11, 2005
Filed:
Mar. 22, 2002
Naomasa Nakamura, Yokohama, JP;
Sumio Ashida, Tokyo, JP;
Keiichiro Yusu, Yokohama, JP;
Katsutaro Ichihara, Yokohama, JP;
Noritake Oomachi, Kashiwa, JP;
Naomasa Nakamura, Yokohama, JP;
Sumio Ashida, Tokyo, JP;
Keiichiro Yusu, Yokohama, JP;
Katsutaro Ichihara, Yokohama, JP;
Noritake Oomachi, Kashiwa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An optical information recording medium includes a substrate, first information recording layer, and second information recording layer. The first information recording layer includes a recording film, first dielectric film whose complex index has a real part n, second dielectric film whose complex index has a real part n, and third dielectric film whose complex index has a real part n. Relationships n>nand n>nare satisfied.