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:
Sep. 27, 1977
Filed:
May. 13, 1976
Applicant:
Inventors:
Tomoki Gunjima, Yokohama, JA;
Toshio Ichiki, Kawasaki, JA;
Assignee:
Asahi Glass Company, Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2041 / ; 204 98 ; 204102 ; 204296 ; 204301 ;
Abstract
In an electrodialysis process for aqueous base-containing solutions the improvement which comprises using a cation-exchange membrane made of a copolymer of ethylene and an unsaturated carboxylic acid or a salt thereof having an ion-exchange capacity of 0.7 to 3 m equivalent/g (dry resin).