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:
Oct. 23, 2012
Filed:
Dec. 19, 2007
Hyoung-juhn Kim, Suwon-si, KR;
Jeung Woo Lee, Busanjin-gu, KR;
Tae-hoon Lim, Seoul, KR;
Suk Woo Nam, Seoul, KR;
Seong-ahn Hong, Seoul, KR;
In-hwan OH, Seoul, KR;
Hyung Chul Ham, Seoul, KR;
Sang-yeop Lee, Seoul, KR;
Hyoung-Juhn Kim, Suwon-si, KR;
Jeung Woo Lee, Busanjin-gu, KR;
Tae-Hoon Lim, Seoul, KR;
Suk Woo Nam, Seoul, KR;
Seong-Ahn Hong, Seoul, KR;
In-Hwan Oh, Seoul, KR;
Hyung Chul Ham, Seoul, KR;
Sang-Yeop Lee, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
A partially sulfonated polybenzimidazole based polymer for fuel cell membrane is prepared by copolymerizing monomers of 3,3'-diaminobenzidine, isophthalic acid and 5-sulfoisophthalic acid to obtain a partially sulfonated polybenzimidazole, and doping the partially sulfonated polybenzimidazole with inorganic acid.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile