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:
Apr. 17, 2012
Filed:
Jan. 27, 2009
Takashi Nishihara, Osaka, JP;
Rie Kojima, Osaka, JP;
Hideo Kusada, Osaka, JP;
Noboru Yamada, Osaka, JP;
Takashi Nishihara, Osaka, JP;
Rie Kojima, Osaka, JP;
Hideo Kusada, Osaka, JP;
Noboru Yamada, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An optical information recording medium () of the present invention is an optical information recording medium including: N information layers, where N is a natural number of 2 or more; and an intermediate layer for separating the N information layers optically from each other. With the N information layers being referred to as a first information layer () to an N-th information layer () sequentially from an optical beam incident side, a first information layer () corresponding to an L-th information layer included in the N information layers includes a recording layer () on which information can be recorded by irradiation with an optical beam, a reflective layer (), and a transmittance adjusting layer () in this order from the optical beam incident side, where L is an at least one natural number that satisfies 1≦L≦N−1. The transmittance adjusting layer () contains tungsten (W) and oxygen (O).