Solid polymer electrolyte electrode
CA 1315239 C · Owner: The Dow Chemical Company · Inventors: Birdwell, Jeffrey D.; Smith, Bruce R.; Mcintyre, John M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a method for forming a solid polymer electrolyte (SPE) structure comprising the steps of forming a mixture of a polytetrafluoroethylene or a fluorocarbon ion exchange active polymer in its thermoplastic form and a plurality of catalytically active, electrically conductive particles into a particle containing film; contacting the film with a fluorocarbon membrane in its thermoplastic form and contacting the particle containing film with an electrically conductive, hydraulically permeable matrix thereby forming a laminate having a membrane on one side, a matrix on another side and a plurality of catalytically active particles therebetween. The SPE is particularly applicable …
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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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 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.