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. 15, 2008
Filed:
Oct. 29, 2004
Tsukasa Nakai, Hino, JP;
Sumio Ashida, Yokohama, JP;
Keiichiro Yusu, Yokohama, JP;
Takayuki Tsukamoto, Kawasaki, JP;
Noritake Oomachi, Yokohama, JP;
Naomasa Nakamura, Yokohama, JP;
Urara Ichihara, Legal Representative, Yokohama, JP;
Tsukasa Nakai, Hino, JP;
Sumio Ashida, Yokohama, JP;
Keiichiro Yusu, Yokohama, JP;
Takayuki Tsukamoto, Kawasaki, JP;
Noritake Oomachi, Yokohama, JP;
Naomasa Nakamura, Yokohama, JP;
Urara Ichihara, legal representative, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A phase-change optical recording medium has a first information layer including a phase-change optical recording film arranged in a position close to the light incident side, a second information layer including another phase-change optical recording film arranged in a position remote from the light incident side and an interlayer separating film arranged between the first information layer and the second information layer, in which at least one of the first information layer and the second information layer includes a noise reduction film in contact with the interlayer separating film. The noise reduction film is formed of SiOx (1≦x≦2) or SiOC.