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. 06, 1978
Filed:
Nov. 02, 1976
Applicant:
Inventors:
Maomi Seko, Tokyo, JA;
Yasumichi Yamakoshi, Tokyo, JA;
Hirotsugu Miyauchi, Kawasaki, JA;
Mitsunobu Fukumoto, Yokohama, JA;
Kyoji Kimoto, Yokohama, JA;
Itaru Watanabe, Yokohama, JA;
Shigeo Yokoyama, Yokohama, JA;
Assignee:
Asahi Kasei Kogyo Kabushiki Kaisha, Osaka, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ; C25C / ;
U.S. Cl.
CPC ...
260 / ; 260 / ;
Abstract
A perfluorocarbon type cation exchange membrane prepared by treatment with an oxidizing agent of a cation exchange membrane containing perfluorocarbon polymers having specific pendant N-sulfonamide groups has improved electrochemical characteristics when used as a membrane in electrolysis of aqueous alkali halide solution.