Electrolytic cell with cation exchange membrane and gas permeable electrodes
CA 1088456 A · Owner: Asahi Kasei Kogyo Kabushiki Kaisha · Inventors: Yoshida, Muneo; Takemura, Reiji; Seko, Maomi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an electrolytic cell having a cation exchange membrane as a diaphragm partitioning said cell into cathode and anode chambers, electrolysis of an aqueous electrolyte solution is conducted while generating gas at the anode by maintaining the pressure within the cathode chamber higher than that within the anode chamber. Some difficulties caused when electrolyzing an aqueous alkali metal halide solution to form alkali metal hydroxide in the cathode chamber are overcome by adjusting the anolyte to a pH <3.5. A preferred electrolytic cell for use in the process is also disclosed.
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 October 28, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 1997.
- 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.