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:
Oct. 25, 1994
Filed:
Jan. 27, 1993
Applicant:
Inventor:
Thomas S Drackett, Vancouver, CA;
Assignee:
Chemetics International Company Ltd., Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 84 ; 204101 ; 204129 ;
Abstract
A method and apparatus for producing hydrogen peroxide in caustic solution utilizing an electrolytic cell having electrolytes, preferably, alkaline in both anode and cathode compartments separated by a bipolar membrane which splits water into hydrogen ions and hydroxyl ions. Electrolysis of oxygen which diffuses through a gas-diffusion cathode forms peroxide in catholyte while hydrogen ions generated within the bipolar membrane migrate into the catholyte. Peroxide can be produced in the catholyte as a cell product having a caustic to peroxide ratio of less than 1.0 at five percent peroxide, by weight.