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:
Aug. 22, 2023
Filed:
Oct. 17, 2018
Applicant:
Maxell, Ltd., Kyoto, JP;
Inventors:
Assignee:
MAXELL, LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/404 (2006.01); G01N 27/30 (2006.01); G01N 27/413 (2006.01);
U.S. Cl.
CPC ...
G01N 27/404 (2013.01); G01N 27/30 (2013.01); G01N 27/413 (2013.01);
Abstract
An electrochemical oxygen sensor with a long service life is provided. The electrochemical oxygen sensor according to the present invention includes a positive electrode, a negative electrode, and an electrolyte solution, and the electrolyte solution contains a chelating agent and ammonia, and a concentration of the ammonia in the electrolyte solution is 0.01 mol/L or higher. Citric acid is preferable as the chelating agent contained in the electrolyte solution. Also, the negative electrode preferably contains an Sn alloy.