Solid oxide fuel cells
CA 2038755 C · Owner: Misawa, Hidenobu · Inventors: Misawa, Hidenobu; Ishihara, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid oxide fuel cell has a plurality of cylindrical solid oxide fuel cell elements. Each of the fuel cell elements at least has a fuel electrode, a solid electrolyte and an air electrode. A multi-contact point type current-collecting member is contacted to the fuel electrodes. The fuel electrode of a certain fuel cell element is electrically connected to the air electrode of a solid oxide fuel electrode adjacent to this certain fuel cell element through the multi-contact point type current-collecting member and an interconnector. The multi-contact point type current-collecting member is contacted with the substantially entire surface of the fuel electrodes.
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 21, 1991 and granted April 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2013.
- 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.