Method and apparatus for coating an ion-exchange membrane with a catalyst layer
CA 2446448 A1 · Owner: Ballard Power Systems Inc. · Inventors: Vlajnic, Goran; Wilke, Todd E.; Beattie, Paul D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for coating an ion-exchange membrane with a catalyst layer by first heating a surface of the membrane to thereby soften the surface followed by, deposition of a catalyst composition and compaction into the ion-exchange membrane, to produce a catalyst-coated membrane. I-lasting of the ion-exchange membrane may be, at a temperature between 20°C and 50°C typically between , 30°C and 40°C, above the glass transition temperature of the dry ion-exchange membrane. In one embodiment, the catalyst composition is fluidized in a fluidized bed reactor prior to being deposited, on the membrane surface. A system for coating the ion-exchange membrane is also, provided. The catalyst-coated …
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
- Filed October 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2025.
- 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.