Ion exchange membrane of fluorinated polymer with porous non-electrode layer
CA 1206439 A · Owner: Asahi Glass Company Ltd. · Inventors: Oda, Yoshio; Morimoto, Takeshi; Suzuki, Kohji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ion exchange membrane cell which comprises an anode a, cathode, and an anode compartment and a cathode compartment partitioned by an ion exchange membrane. The ion exchange membrane is a cation exchange membrane having a gas and liquid permeable porous non-electrode layer on at least one side thereof, and the cation exchange membrane is formed by a fluorinated polymer having sulfonic acid groups and ion exchange groups having weaker acidity than the sulfonic acid groups.
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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 June 24, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 2003.
- 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.