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:
Mar. 13, 2012
Filed:
Oct. 02, 2007
Hideki Kitaura, Kyoto, JP;
Yukako Doi, Osaka, JP;
Shigeru Furumiya, Hyogo, JP;
Kenichi Nishiuchi, Osaka, JP;
Noboru Yamada, Osaka, JP;
Hideki Kitaura, Kyoto, JP;
Yukako Doi, Osaka, JP;
Shigeru Furumiya, Hyogo, JP;
Kenichi Nishiuchi, Osaka, JP;
Noboru Yamada, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In an optical information recording medium of the present invention, at least one information layer provided on a transparent substrate includes a protective layer and a write-once recording layer that are disposed in this order from the transparent substrate side. The recording layer contains at least one selected from Cr—O, Zn—O, Ga—O, In—O, Sn—O, Sb—O, Bi—O, and Te—O. The protective layer contains at least one selected from Cr—O, Zn—O, Ga—O, In—O, Sn—O, Sb—O, Bi—O, and Te—O. When the total amount of all the atoms other than oxygen atoms contained in the protective layer is taken as 100 atom %, the total amount of atoms of Cr, Zn, Ga, In, Sn, Sb, Bi, and Te in the protective layer is at least 70 atom %.