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:
Apr. 24, 1979
Filed:
Mar. 17, 1978
Applicant:
Inventors:
Naomi Seko, Tokyo, JP;
Yasumichi Yamakoshi, Tokyo, JP;
Hirotsugu Miyauchi, Kanagawa, JP;
Mitsunobu Fukumoto, Kanagawa, JP;
Kyoji Kimoto, Kanagawa, JP;
Itaru Watanabe, Kanagawa, JP;
Toshioki Hane, Kanagawa, JP;
Sakae Tsushima, Kanagawa, JP;
Assignee:
Asahi Kasei Kogyo Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25B / ; C25B / ;
U.S. Cl.
CPC ...
204 98 ; 204128 ; 204252 ; 204296 ; 521 29 ;
Abstract
Cation exchange membrane comprising a fluorocarbon polymer characterized by the presence of pendant carboxylic acid groups of the formula -- OCF.sub.2 COOH -- and derivatives thereof.