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:
Jun. 17, 2025
Filed:
Jan. 08, 2024
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Inventors:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23G 1/08 (2006.01); H01M 8/021 (2016.01);
U.S. Cl.
CPC ...
C23G 1/081 (2013.01); H01M 8/021 (2013.01);
Abstract
The present disclosure relates to a fuel cell separator manufacturing method involving immersing a stainless-steel base material formed into a shape of a separator in an acidic solution having a fluorine ion concentration of 0.1 ppm or higher and a pH of 1±0.2 at 80° C.±5° C. for 60 minutes or longer to perform a modification treatment on a surface of the stainless-steel base material.
Nomura, Yusuke. (2025). Fuel cell separator manufacturing method (U.S. Patent No. 12331409). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12331409
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile