Solid oxide fuel cell
CA 2036366 C · Owner: Misawa, Hidenobu · Inventors: Misawa, Hidenobu; Yamada, Satoru; 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 comprises tube-shaped solid oxide fuel cell elements. One gas selected from an oxidizing gas and a fuel gas flows in an internal space of the element and the, other gas flows in an external space of the element. A means for converting an oxidizing gas-flow and/or a fuel gas-flow into turbulent flows is provided in the internal space and/or the external space. The converting means is preferably an elongated body such as a tube-shaped body, a solid pillar-shaped body a, hollow-cylindrical body, a solid-cylindrical body and a rod with plates, extending in the longitudinal direction of the element.
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 February 14, 1991 and granted May 20, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 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.