Catalyst for fuel cell and electrode using the same
CA 2510068 A1 · Owner: Homma, Itaru · Inventors: Nakajima, Hitoshi; Homma, Itaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid heteropolyacid catalyst for a fuel cell which comprises a partial , salt of a heteropolyacid comprising a noble metal and/or a transition metal and having a molecular weight of 800 to 10000; and an electrode using the solid heteropolyacid catalyst. The solid heteropolyacid catalyst exhibits greatly excellent durability against a poisoning gas such as CO and thus provides a high performance capability catalyst for a direct methanol type fuel cell which uses methanol as a fuel.
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 November 12, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 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.