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:
Oct. 07, 2008
Filed:
May. 30, 2003
Hideyoshi Horimai, Yokohama, JP;
Masaharu Kinoshita, Yokohama, JP;
Yoshinobu Tanaka, Akeno-machi, JP;
Yoshihiro Takatani, Akeno-machi, JP;
Hideyoshi Horimai, Yokohama, JP;
Masaharu Kinoshita, Yokohama, JP;
Yoshinobu Tanaka, Akeno-machi, JP;
Yoshihiro Takatani, Akeno-machi, JP;
Memory-Tech Corporation, Ibaraki, JP;
Optware Corporation, Yokohama-shi, JP;
Abstract
An optical disc recording medium of the present invention comprises a first substrate () having a physically pre-formatted surface; a reflective film () formed on the pre-formatted surface of the first substrate (); a transparent layer () with a thickness of 50-430 μm formed on the reflective film (); a second substrate () composed of transparent material and located at a distance of certain spacing from the transparent layer (); and a recording layer () for hologram recording filled between the transparent layer () and the second substrate ().