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Expired Canadian patentCanada

Compact fuel cell stack

CA 1202065 A · Owner: Engelhard Corporation · Inventors: Fekete, Imre, (Deceased)

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A compact fuel cell stack in which a plurality of fuel cells are arranged in a stack between end plates. Resilient means such as springs are connected between the end plates, imposing on the end plates a force which urges the end plates together to apply a predetermined compressive loading to the cells. The springs are entirely disposed in the space between the end plates and do not extend exteriorly above or below the end plates thereby reducing the overall stack height and weight as compared with conventional structures. force adjusting means to adjust the force imposed by the resilient means are preferably included.

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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 March 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 22, 1983
GrantedMarch 18, 1986
Term endedMarch 18, 2003
Patent numberCA 1202065 A
Classification (IPC)H01M8/04 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedSep 22, 1983Patent grantedMarch 18, 1986Term endedMarch 18, 2003

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.