Air depolarized cell with oxygen permeable membrane
CA 1106441 A · Owner: Union Carbide Corporation · Inventors: Kordesch, Karl V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
11,474, AIR DEPOLARIZED CELL, WITH OXYGEN PERMEABLE MEMBRANE ABSTRACT OF THE INVENTION, The air depolarized cell comprises a laminated cathode assembly including an air cathode and an auxiliary cathode in combination with a layer of a thin film non-porous gas permeable membrane which is disposed with one side over the air cathode and with the opposite side having substantially unrestricted access to the atmosphere through a gas diffusion member. The non-porous membrane controls the transfer of oxygen from the ambient atmosphere to the air cathode exclusively by gas solubility with its permeability to oxygen selected to correspond to a predetermined average current density for the cell. S P …
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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 August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 1998.
- 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.