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:
Jan. 23, 1979
Filed:
Aug. 12, 1977
Applicant:
Inventors:
Kenji Takahashi, Shin-nanyo, JP;
Toru Seita, Shin-nanyo, JP;
Shunichi Asami, Shin-nanyo, JP;
Akihiko Shimizu, Shin-nanyo, JP;
Assignee:
Toyo Soda Manufacturing Co., Ltd., Yamaguchi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ; C08L / ;
U.S. Cl.
CPC ...
521 27 ; 204296 ;
Abstract
A cation-exchange membrane is prepared by immersing a monomer having lactone ring and/or a lactonizable monomer with or without a crosslinking agent or a polymerization initiator, into a fluorinated polymer membrane having cation-exchangeable groups and polymerizing the monomer.