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Expired Canadian patentCanada

Integrated apparatus for producing warm water

CA 1312798 C · Owner: Alvisi, Cesare · Inventors: Alvisi, Cesare

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

An integrated apparatus for producing warm or sanitary water, comprising in combination a heat pump having a compressor, a condenser, an expansion valve and an evaporator connected in series to convey a refrigerating fluid, an electric or fuel-powered (gas- or gas oil-powered) boiler accommodating the condenser of the heat pump and at, least one greenhouse effect heat source. A chamber for receiving the evaporator of the heat pump is provided downstream of the boiler and is in communication both with the boiler to receive therefrom the flue gases and with the greenhouse effect heat source to receive therefrom warm air which, together with the exhaust fumes gives off heat to, the evaporator.

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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 January 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
  • 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 11, 1989
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312798 C
Classification (IPC)F22B9/00 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 11, 1989Patent grantedJan 19, 1993Term endedJan 19, 2010

Sources & verification

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