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:
Aug. 21, 2007
Filed:
Jun. 04, 2003
Makoto Harigaya, Kanagawa, JP;
Kazunori Ito, Kanagawa, JP;
Hiroko Tashiro, Kanagawa, JP;
Miku Mizutani, Kanagawa, JP;
Michiaki Shinotsuka, Kanagawa, JP;
Hiroyuki Iwasa, Kanagawa, JP;
Masaru Shinkai, Kanagawa, JP;
Makoto Harigaya, Kanagawa, JP;
Kazunori Ito, Kanagawa, JP;
Hiroko Tashiro, Kanagawa, JP;
Miku Mizutani, Kanagawa, JP;
Michiaki Shinotsuka, Kanagawa, JP;
Hiroyuki Iwasa, Kanagawa, JP;
Masaru Shinkai, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical recording medium which comprises a substrate and a recording layer disposed on the substrate, in which the recording layer comprises Ga and Sb, a content of the Sb is 80 atm % to 95 atm % relative to a total content of the Ga and the Sb in the recording layer, and recording and erasing are carried out by a reversible phase change between an amorphous phase and a crystalline phase in the recording layer.