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:
Jul. 11, 2006
Filed:
Mar. 24, 2004
Hideki Kitaura, Souraku-gun, JP;
Noboru Yamada, Hirakata, JP;
Rie Kojima, Kadoma, JP;
Takeshi Sakaguchi, Ibaraki, JP;
Hideki Kitaura, Souraku-gun, JP;
Noboru Yamada, Hirakata, JP;
Rie Kojima, Kadoma, JP;
Takeshi Sakaguchi, Ibaraki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An optical information recording medium of the present invention includes a transparent substrate and a multi-layered film provided on the transparent substrate. The multi-layered film includes at least a recording layer that is changed between two or more different states capable of being detected by irradiation with a light beam, and a light absorbing layer in this order from a side close to the transparent substrate. The recording layer contains a material represented by a formula: Ge(BiSb)Te(where x≧5 and 0<y≦1) as a main component. Such a multi-layered film including a recording layer also is applicable to a multi-layered recording medium including a first information layer to an N-th information layer (N is an integer of 2 or more) disposed on a transparent substrate in this order from a side close to the transparent substrate. In this case, at least one of the first information layer to the N-th information layer has the same configuration as that of the multi-layered film.