Porous diaphragm for electrochemical cell
CA 1293951 C · Owner: Dong, Dennis F. · Inventors: Dong, Dennis F.; Clifford, Arthur L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to porous substantially uniform, electrolyte flow rate producing diaphragm and electrode assembly for use in electrochemical cells, said diaphragm contacting at least one electrode characterized as porous and self-draining said diaphragm comprising a plurality of layers of a microporous polyolefin film or a plurality of layers of a composite comprising said microporous polyolefin film and a support fabric said sup-, port fabric being laminated to said microporous polyolefin film wherein portions of said diaphragm which are exposed to the full head of said aqueous solution as compared with portions of said diaphragm which are exposed to little or no head of said aqueous …
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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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 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.