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:
Dec. 16, 2008
Filed:
Aug. 14, 2006
Hideo Hosono, Yamato, JP;
Katsuro Hayashi, Kawasaki, JP;
Masashi Miyakawa, Yokohama, JP;
Masahiro Hirano, Tokyo, JP;
Sungwng Kim, Kawasaki, JP;
Setsuro Ito, Yokohama, JP;
Satoru Narushima, Yokohama, JP;
Hideo Hosono, Yamato, JP;
Katsuro Hayashi, Kawasaki, JP;
Masashi Miyakawa, Yokohama, JP;
Masahiro Hirano, Tokyo, JP;
Sungwng Kim, Kawasaki, JP;
Setsuro Ito, Yokohama, JP;
Satoru Narushima, Yokohama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Japan Science and Technology Agency, Kawaguchi-shi, JP;
Abstract
To provide a method for preparing a mayenite type compound having electroconductivity imparted. A method for preparing an electroconductive mayenite type compound, which comprises melting a raw material containing Al and at least one element selected from the group consisting of Ca and Sr, holding the melt in a low oxygen partial pressure atmosphere having an oxygen partial pressure of not higher than 10 Pa, followed by cooling or annealing in a low oxygen partial pressure atmosphere or in atmospheric air for solidification, thereby to replace oxygen present in cages by electrons in a high concentration.