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:
May. 19, 2020
Filed:
Dec. 22, 2017
Showa Denko K.k., Tokyo, JP;
National University Corporation Yokohama National University, Yokohama-shi, Kanagawa, JP;
Kunchan Lee, Tokyo, JP;
Yoshinori Yamato, Tokyo, JP;
Kenichiro Ota, Yokohama, JP;
Akimitsu Ishihara, Yokohama, JP;
SHOWA DENKO K.K., Tokyo, JP;
NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, Yokohama-shi, Kanagawa, JP;
Abstract
An object of the invention is to provide an oxygen reduction catalyst composed of a titanium oxynitride having high oxygen reduction capacity. The oxygen reduction catalyst of the invention is a titanium oxynitride that has a nitrogen element content of 8.0 to 15 mass %, has a crystal structure of anatase titanium dioxide in a powder X-ray diffraction measurement, and has a signal intensity ratio N—Ti—N/O—Ti—N in an X-ray photoelectron spectroscopic analysis of in the range of 0.35 to 0.70.