Fuel cell with polymer electrolyte
CA 2370104 A1 · Owner: Ruthrof, Klaus · Inventors: Ruthrof, Klaus; Gosebruch, Harald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel cell (1) is provided with a central polymer membrane (2) that is provided with diffusion layers (3, 4) covering both sides and having plane electrodes (5, 6) supporting the back surface of said layers. The electrodes (5, 6) are provided with openings (15, 16) and rear covers (7 8) with gas , supplies (9, 10) for at least one of the plane electrodes (5 6). At least two , parallel extending gas flow channels (11 12; 13, 14) sealed against each , other are configured between at least one plane electrode (5 6) and the cover , (7, 8) pertaining thereto. Openings (15) in the plane electrode (6) extend from one gas flow channel (13) into the adjacent diffusion layer (4) and from the …
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 April 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2022.
- 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.