Electrolytic cell for alkali metal hydrosulfite solutions
CA 1295284 C · Owner: Woodard, Kenneth Eugene, Jr. · Inventors: Ford, James Milton; Cawlfield, David William; Woodard, Kenneth Eugene, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrolytic membrane cell for the electrochemical production of an alkali metal hydrosulfite by the reduction of an alkali metal biosulfite component of a circulated aqueous catholyte solution is provided. The cell utilizes an improved extended surface multipass porous cathode an improved, catholyte flow path and a hydrophilically treated separator mesh that separates the cation exchange membrane from the anode.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.