Method for forming a solid polymer electrolyte structure by pressing catalyst into membrane
CA 1293952 C · Owner: Carl, William P. · Inventors: Birdwell, Jeffrey D.; Carl, William P.; 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 structure comprising: (a) forming a suspension of catalytically active, electrically conductive particles and a liquid such as dibromotetrafluoroethane;, (b) applying the suspension to at least one side of a fluorocarbon membrane sheet, while said sheet is in its thermoplastic form;, (c) removing substantially all of the liquid, leaving the particles on the membrane sheet; (d) pressing at least a portion of the particles into the membrane sheet; and (e) contacting the side of the so-treated membrane having the particles on the surface with an electrically conductive, hydraulically permeable matrix.
Read the whole patent
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.