Oxygen gas diffusion electrode
CA 1324982 C · Owner: Fmc Corporation · Inventors: Chiang, John Shu Chi; Nicholson, Charles John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved flexible graphite fabric gas diffusion cathode for an electrolytic cell has a first hydrophobic cathode surface contacting electrolyte in the cell and a second cathode surface forming an upper surface of the cell. The improvement comprises a plurality of perforations in the flexible cathode to provide a series of vents, each perforation having sufficient open area that the force of gravity on the electrolyte is greater than the capillary forces of the perforation on the electrolyte. This prevents a localized nonuniform flow of electrolyte in the cell when the flexible electrode is disposed in a generally horizontal position with the first surface contacting the electrolyte and …
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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 December 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 2010.
- 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.