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. 16, 2012
Filed:
Sep. 24, 2010
Takayuki Tsukamoto, Kawasaki, JP;
Chikayoshi Kamata, Kawasaki, JP;
Takeshi Yamaguchi, Kawasaki, JP;
Takahiro Hirai, Yokohama, JP;
Shinya Aoki, Yokohama, JP;
Kohichi Kubo, Yokohama, JP;
Takayuki Tsukamoto, Kawasaki, JP;
Chikayoshi Kamata, Kawasaki, JP;
Takeshi Yamaguchi, Kawasaki, JP;
Takahiro Hirai, Yokohama, JP;
Shinya Aoki, Yokohama, JP;
Kohichi Kubo, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, an information recording and reproducing device includes a first layer, a second layer, and a recording layer between the first and second layers, which is capable of a transition between a first state of a low resistance and a second state of a high resistance by flowing a current between the first and second layers. A peripheral portion of the recording layer has a composition different from that of a center portion of the recording layer. The center portion includes two kinds of cation elements. And the center portion is different from the peripheral portion in a ratio of the two kinds of cation elements.