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:
Nov. 13, 2018
Filed:
Dec. 19, 2016
Tokyo Institute of Technology, Tokyo, JP;
Japan Science and Technology Agency, Kawaguchi-shi, Saitama, JP;
Hideo Hosono, Tokyo, JP;
Michikazu Hara, Tokyo, JP;
Yasunori Inoue, Tokyo, JP;
Masaaki Kitano, Tokyo, JP;
Fumitaka Hayashi, Tokyo, JP;
Toshiharu Yokoyama, Tokyo, JP;
Satoru Matsuishi, Tokyo, JP;
Yoshitake Toda, Tokyo, JP;
TOKYO INSTITUTE OF TECHNOLOGY, Tokyo, JP;
JAPAN SCIENCE AND TECHNOLOGY AGENCY, Saitama, JP;
Abstract
If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 10cmor more and a specific surface area of 5 mgor more is produced by: the following steps: (1) forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.