Fuel battery
CA 2407920 A1 · Owner: Miyakoshi, Mitsuaki · Inventors: Watanabe, Tomikazu; Miyazawa, Hiroshi; Miyakoshi, Mitsuaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel battery comprising a hydrogen gas channel forming plate (6) formed with a plurality of openings (9, 12, 13), a hydrogen electrode plate (1) formed with a plurality of opening (2, 3), a proton conduction film (45) an oxygen , electrode plate (21) formed with a plurality of openings (22 23), and an air , channel forming plate (26) formed with a plurality of openings (21) these , components being laminated in the order mentioned to constitute a unit fuel cell. The hydrogen electrode plate (1) and oxygen electrode plate (21) are formed in their peripheries with a plurality of selectively cuttable connecting pins (A, B, C, D, E, F, G, H). Some of connecting pins are properly cut, …
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 June 1, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 1, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2023.
- 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.