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. 11, 1994
Filed:
Apr. 03, 1992
Applicant:
Inventor:
Zbigniew Twardowski, Mississauga, CA;
Assignee:
Sterling Canada, Inc., Islington, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204101 ; 204 98 ; 204151 ; 2041824 ; 204131 ;
Abstract
Scale is removed from within cation-exchange membranes by operating the cathode compartment of a cell divided by the cation-exchange membrane with a mildly-acid catholyte while effecting transfer of cationic species from the anode compartment to the cathode compartment.