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Expired Canadian patentCanada

Miniaturized cooling device and method of use

CA 1298092 C · Owner: Cover, John H. · Inventors: Sabin, Cullen M.; Cover, John H.; Thomas, Dennis A.

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

Abstract, Disclosed is a self-contained rapid cooling device, that retains heat produced from the cooling process and can be stored for indefinite periods without losing its cooling potential. A liquid in a first chamber undergoes a change of phase into vapor which cools the first chamber. A sorbent in a second chamber is in fluid communication with the vapor and removes the vapor from the first chamber. A phase separator prevents unvaporized liquid from passing into the second chamber. The device is self-contained because a material in contact with the sorbent removes the heat from the sorbent to prevent the reduction in the cooling effect produced by the first chamber.

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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 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 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.
FiledJuly 6, 1988
GrantedMarch 31, 1992
Term endedMarch 31, 2009
Patent numberCA 1298092 C
Classification (IPC)F25B17/08 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 6, 1988Patent grantedMarch 31, 1992Term endedMarch 31, 2009

Sources & verification

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