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. 30, 2007
Filed:
Dec. 01, 2004
Masakazu Ogasawara, Tsurugashima, JP;
Michio Sakano, Tsurugashima, JP;
Satoru Tanaka, Tsurugashima, JP;
Akihiro Tachibana, Tsurugashima, JP;
Yoshihisa Kubota, Tsurugashima, JP;
Yoshihisa Itoh, Tsurugashima, JP;
Michikazu Hashimoto, Tsurugashima, JP;
Kazuo Kuroda, Tsurugashima, JP;
Satoshi Sugiura, Tsurugashima, JP;
Masakazu Ogasawara, Tsurugashima, JP;
Michio Sakano, Tsurugashima, JP;
Satoru Tanaka, Tsurugashima, JP;
Akihiro Tachibana, Tsurugashima, JP;
Yoshihisa Kubota, Tsurugashima, JP;
Yoshihisa Itoh, Tsurugashima, JP;
Michikazu Hashimoto, Tsurugashima, JP;
Kazuo Kuroda, Tsurugashima, JP;
Satoshi Sugiura, Tsurugashima, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A hologram recording medium is a hologram recording medium which is irradiated with light for recording information therein or reproducing information therefrom. The hologram recording medium has a recording layer made of a photo-sensitive material capable of preserving an optical interference pattern, a reflective layer disposed on one side of the recording layer opposite to the side on which an light beam impinges, and a quarter wavelength plate interposed between the recording layer and the reflective layer.