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. 23, 2005
Filed:
Jan. 22, 2002
Yoichi Asano, Wako, JP;
Masaaki Nanaumi, Wako, JP;
Nagayuki Kanaoka, Wako, JP;
Hiroshi Sohma, Wako, JP;
Nobuhiro Saito, Wako, JP;
Junji Matsuo, Wako, JP;
Kohei Goto, Tsukuba, JP;
Masayuki Takahashi, Tsukuba, JP;
Yuji Naito, Tsuchiura, JP;
Fusazumi Masaka, Tsukuba, JP;
Yoichi Asano, Wako, JP;
Masaaki Nanaumi, Wako, JP;
Nagayuki Kanaoka, Wako, JP;
Hiroshi Sohma, Wako, JP;
Nobuhiro Saito, Wako, JP;
Junji Matsuo, Wako, JP;
Kohei Goto, Tsukuba, JP;
Masayuki Takahashi, Tsukuba, JP;
Yuji Naito, Tsuchiura, JP;
Fusazumi Masaka, Tsukuba, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
JSR Corporation, Tokyo, JP;
Abstract
A composite polymer electrolyte membrane is formed from a first polymer electrolyte comprising a sulfonated polyarytene polymer and a second polymer electrolyte comprising another hydrocarbon polymer electrolyte. In the first polymer electrolyte, 2-70 mol % constitutes an aromatic compound unit with an electron-attractive group in its principal chain, while 30-98 mol % constitutes an aromatic compound unit without an electron-attractive group in its principal chain. The second polymer electrolyte is a sulfonated polyether or sulfonated polysulfide polymer electrolyte.