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Expired Canadian patentCanada

Hydrogen/chlorine electrochemical energy storage system

CA 1108690 A · Owner: Energy Development Associates, Inc. · Inventors: Hart, Thomas G.

CIPO record

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

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Abstract From the Canadian patent

A HC1 electrochemical energy storage system comprises a cell having therein an aqueous HC1 electrolyte in which at least a portion of the HC1 is present in disassociated form ant an electrode of ungraphitised carbon and, communicating with said cell, at least one member of the group of means for storing hydrogen and means for storing chlorine, said means for storing hydrogen comprising graphitised carbon, and said means for storing chlorine comprising ungraphitised carbon.

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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 September 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 3, 1978
GrantedSeptember 8, 1981
Term endedSeptember 8, 1998
Patent numberCA 1108690 A
Classification (IPC)H01M8/22 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 3, 1978Patent grantedSep 8, 1981Term endedSep 8, 1998

Sources & verification

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