Fuel cell with pulsed anode potential
CA 2284589 A1 · Owner: Mannesmann Aktiengesellschaft · Inventors: Friedrich, Kaspar Andreas; Stimming, Ulrich; Unkauf, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a fuel cell (1) comprising an electrode-electrolyte unit (2, 3, 4) with an anode catalyst whose catalytic activity in a fuel cell is reduced by carbon monoxide and with means (5 6) for varying the anode , potential in pulsed manner such that carbon monoxide which has been adsorbed on the catalyst is oxidized. In this way power losses owing to carbon , monoxide adsorption at the anode catalyst are reduced.
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 March 12, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2020.
- 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.