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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.:

US 10615425 B1

PDFFull Text
Date of Patent:
Apr. 07, 2020

Filed:

Jul. 21, 2016

Tin oxide, electrode catalyst for fuel cells, membrane electrode assembly, and solid polymer fuel cell

Applicant:

Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;

Inventors:

Koichi Miyake, Saitama, JP;

Susumu Takahashi, Saitama, JP;

Hiromu Watanbe, Saitama, JP;

Naohiko Abe, Saitama, JP;

Ryoma Tsukuda, Saitama, JP;

Kenichi Amitani, Saitama, JP;

Koji Taniguchi, Saitama, JP;

Hiroki Takahashi, Saitama, JP;

Yoshihiro Yoneda, Saitama, JP;

Kazuhiko Kato, Saitama, JP;

Assignee:

MITSUI MINING & SMELTING CO., LTD., Tokyo, JP;

Attorney:

Young & Thompson

Primary Examiner:

Amanda C Walke

Int. Cl.
CPC ...
H01M 4/92 (2006.01); C01G 19/00 (2006.01); C01G 19/02 (2006.01); C01G 33/00 (2006.01); C01G 35/00 (2006.01); H01M 4/86 (2006.01); H01M 8/1004 (2016.01); H01M 8/1023 (2016.01); H01M 8/1039 (2016.01); H01M 8/1018 (2016.01);
U.S. Cl.
CPC ...
H01M 4/925 (2013.01); C01G 19/006 (2013.01); C01G 19/02 (2013.01); C01G 33/006 (2013.01); C01G 35/006 (2013.01); H01M 4/8657 (2013.01); H01M 8/1004 (2013.01); H01M 8/1023 (2013.01); H01M 8/1039 (2013.01); C01P 2002/52 (2013.01); C01P 2004/62 (2013.01); C01P 2006/40 (2013.01); H01M 2008/1095 (2013.01);
Abstract

Disclosed is a tin oxide containing antimony and at least one element A selected from the group consisting of tantalum, tungsten, niobium, and bismuth. The antimony and the at least one element A selected from the group consisting of tantalum, tungsten, niobium, and bismuth are preferably dissolved in a solid state in tin oxide. The ratio of the number of moles of the element A to the number of moles of antimony, i.e., [(the number of moles of the element A/the number of moles of antimony)], is preferably 0.1 to 10.

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