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. 17, 2000
Filed:
Nov. 25, 1997
Makoto Miyamoto, Ome, JP;
Motoyasu Terao, Tokyo, JP;
Yukio Fukui, Tokyo, JP;
Nobuhiro Tokushuku, Yokohama, JP;
Keikichi Andoo, Musashino, JP;
Tetsuya Nishida, Tokyo, JP;
Akemi Hirotsune, Higashimurayama, JP;
Yasushi Miyauchi, Akishima, JP;
Koichi Moritani, Yokohama, JP;
Hitachi, Ltd., Tokyo, US;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
An information recording medium which includes at least a recording layer, and first and second metallic layers disposed on an opposite side of an energy beam incident side of the recording layer and having different compositions, and in which the first one of the first and second metallic layers located closer to the recording layer contains Al, Ag, Au, Pt and Pd as its main components and a sum of contents of these atoms is 60% or more. Thereby recording and reproducing of information can be realized with a high reliability.