Polymer electrolyte fuel cell
CA 2442686 A1 · Owner: Honda Giken Kogyo Kabushiki Kaisha · Inventors: Asano, Yoichi; Kanaoka, Nagayuki; Sohma, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid polymer type fuel cell which comprises: a pair of electrodes (2) and (3) having a catalyst layer (5) comprising catalyst particles which comprise a catalyst support and a catalyst deposited thereon and have been united with one another with an ion-conductive polymer binder; and a polymer electrolyte film (1) sandwiched between the electrodes (2) and (3) on their sides having the catalyst layer (5). The polymer electrolyte film (1) has a coefficient of dynamic viscoelasticity at 110~C of 1x109 to 1x1011 Pa and the ion-conductive , polymer binder used for forming the catalyst layer (5) has a lower coefficient of dynamic viscoelasticity at 110~C than the polymer electrolyte film …
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 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2024.
- 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.