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Expired Canadian patentCanada

Apparatus and method for transferring heat to and from a bed of metal hydrides

CA 1108821 A · Owner: Billings Energy Corporation · Inventors: Woolley, Ronald L.

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Abstract From the Canadian patent

A method and apparatus are disclosed for transferring heat to or from metal hydrides contained in storage containers as hydrogen gas is being charged to or withdrawn from the storage containers wherein the, hydrogen gas being charged to or withdrawn from the storage containers functions as a convective energy carrier. A plurality of the containers are connected together in flow communication in series so that when a, pressure differential is established across the series of containers hydrogen, gas associated with the metal hydride will flow from one container to the next container in the direction of the lower pressure. A pressure differential is created across the series of containers by …

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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 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 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.
FiledJanuary 23, 1979
GrantedSeptember 15, 1981
Term endedSeptember 15, 1998
Patent numberCA 1108821 A
Classification (IPC)C01B6/00 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJan 23, 1979Patent grantedSep 15, 1981Term endedSep 15, 1998

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