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:
Sep. 19, 2006
Filed:
Aug. 05, 2005
Naomasa Nakamura, Yokohama, JP;
Keiichiro Yusu, Yokohama, JP;
Sumio Ashida, Tokyo, JP;
Katsutaro Ichihara, Yokohama, JP;
Naomasa Nakamura, Yokohama, JP;
Keiichiro Yusu, Yokohama, JP;
Sumio Ashida, Tokyo, JP;
Katsutaro Ichihara, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An optical information recording medium of this invention includes a substrate, a light incident surface, a first reflecting layer formed between the substrate and the light incident surface, a second reflecting layer formed between the first reflecting layer and the light incident surface and stacked on the first reflecting layer, the second reflecting layer being made of the same material as that of the first reflecting layer, and a phase change optical recording layer formed between the second reflecting layer and the light incident surface, the phase change optical recording layer transiting between a crystal state and an amorphous state when irradiated with a light beam.