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Expired Canadian patentCanada

Heated transportable fuel cell cartridges

CA 1234865 A · Owner: Westinghouse Electric Corporation · Inventors: Spurrier, Francis R.; Lance, Joseph R.

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

13 51,406, ABSTRACT OF THE DISCLOSURE, A fuel cell stack protective system is made where a plurality of fuel cells, each containing liquid electrolyte subject to crystallization is enclosed by a, containing vessel, and where at least one electric heater is placed in the containing vessel and is capable of preventing electrolyte crystallization.

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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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 14, 1984
GrantedApril 5, 1988
Term endedApril 5, 2005
Patent numberCA 1234865 A
Classification (IPC)H01M8/24 +1 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedNov 14, 1984Patent grantedApril 5, 1988Term endedApril 5, 2005

Sources & verification

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