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:
Feb. 17, 1981
Filed:
Aug. 08, 1979
Applicant:
Inventors:
Manabu Suhara, Yokohama, JP;
Kiyotaka Arai, Yokohama, JP;
Assignee:
Asahi Glass Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25B / ; C25B / ;
U.S. Cl.
CPC ...
204 98 ; 521 27 ;
Abstract
An electrolysis of an aqueous solution of an alkali metal chloride is carried out to produce an alkali metal hydroxide having a concentration of 30 wt. % or more and chlorine by using a modified cation exchange membrane of a fluorinated polymer having carboxylic acid type ion exchange groups, which has an ion exchange capacity of 1.0 to 2.2 meq/g.dry polymer and at least one of whose surface layer has lower ion exchange capacity which is from 45 to 95% of that of the main part.
Suhara, Manabu. (1981). Electrolysis of aqueous solution of alkali metal chloride (U.S. Patent No. 4251333). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4251333
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