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. 08, 1987
Filed:
May. 21, 1986
Applicant:
Inventor:
Zbigniew Twardowski, Mississauga, CA;
Assignee:
Tenneco Canada Inc. (ERCO division), Islington, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25R / ;
U.S. Cl.
CPC ...
2041 / ; 204108 ; 204130 ; 204283 ; 204287 ; 204294 ;
Abstract
Dissolved arsenic (III) contaminant is removed from mineral acids, such as hydrochloric acid, by electrolysis using a high surface area cathode having a three-dimensional electrolyte-contacting surface which exposes the electrolyte to electrolysis for a relatively long period of time. The dissolved arsenic is reduced to arsenic metal, which then plates out on the cathode. Dissolved concentrations of arsenic of less than 1 ppm can be achieved using the invention.
Twardowski, Zbigniew. (1987). Removal of arsenic from acids (U.S. Patent No. 4692228). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4692228
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile