Hot water supply and air conditioning system using co2 heat pump
CA 2586676 C · Owner: Kawazu, Youichi · Inventors: Kawazu, Youichi; Saitou, Tooru; Sato, Kazuyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To prevent reduction in coefficient of performance of heat pump cycle a hot , water supply and air conditioning system comprises a low temperature water tank, a high temperature water tank for storing high temperature water piping for supplying the high temperature water to a hot water supplying equipment and a room heating equipment respectively a first heat exchanger , in which brine which supplies latent heat of vaporization of CO2 refrigerant to , the refrigerant in the evaporator exchanges heat with a heat giving fluid a , second heat exchanger located upstream of the first heat exchanger to cool the high temperature water after it is used as a heat source for the room heating …
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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
- Filed November 21, 2005 and granted March 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.