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Expired Canadian patentCanada

Heat transfering wall panels

CA 1061774 A · Owner: Cairenius, R. Mark J. · Inventors: Cairenius, R. Mark J.

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

This invention is a heating and cooling wall panel that accomplishes heating by radiating to bodies in a space thermal energy from a sourse of warmed water delivered to the panel at low pressure and cools bodies, in a space by absorbing thermal energy radiated to the panel from those bodies and passing the heat thus gained to a cooled fluid also delivered at low pressure. The heat transfer by this panel is accomplished when only small temperature differentials exist between the fluid and the space owing to the extreme thinness of the radiating-cum-absorbing panel face which serves to separate the space and the fluid, and owing also to the thermal connection of this thin sheet to an element …

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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 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 4, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedSeptember 4, 1979
Term endedSeptember 4, 1996
Patent numberCA 1061774 A
Classification (IPC)F28F3/12 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedSep 4, 1979Term endedSep 4, 1996

Sources & verification

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