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:
Sep. 01, 2026
Filed:
Jun. 08, 2023
Applicants:
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Inventors:
Se Wook Jang, Suwon-si, KR;
Kweon Ju Park, Hwaseong-si, KR;
Assignees:
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/1086 (2016.01); H01M 8/10 (2016.01); H01M 8/1039 (2016.01); H01M 8/1053 (2016.01);
U.S. Cl.
CPC ...
H01M 8/1093 (2013.01); H01M 8/1039 (2013.01); H01M 8/1053 (2013.01); H01M 2008/1095 (2013.01);
Abstract
An embodiment method of manufacturing an electrolyte membrane for fuel cells includes preparing a three-layer structure including a first ionomer layer on a first surface of a porous support and a second ionomer layer on a second surface of the porous support opposite the first surface, pressurizing an inert gas into the three-layer structure to produce a microporous membrane, impregnating the microporous membrane with an additional ionomer solution, and drying the microporous membrane.