Fuel cell
CA 1306282 C · Owner: Shimizu, Toru · Inventors: Shiozawa, Shoji; Shimizu, Toru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conventional fuel cell comprises a plurality of cell elements stacked via separator plates each, cell element comprising an electrolyte plate and, cathode and an anode which sandwitch the electrolyte plate. A power generation part of the fuel cell is defined by the electrolyte plate cathode and an anode. Oxidizing gas and fuel gas are supplied to each cell element in the same direction but the direction is opposite to the gas flow of an adjacent cell element. In the improvement, preheating devices are provided next to the power generation part in the direction gases flow as a part of the fuel cell, in a manner such that both incoming and outgoing gases pass through the preheating device. …
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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
- Granted August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
- 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.