Heat pump type air conditioner
CA 2474308 A1 · Owner: Gu, Chujun · Inventors: Gu, Chujun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a heat pump type air conditioner. The air conditioner includes a compressor, an outdoor heat exhanger an indoor , exchanger, and a four way change valve which characterized in that it further includes capillaries in parallel, expansion valves in parallel or an apparatus combined by a capillary and an expansion valve in parallel in which the , capillaries in parallel the expansion valves in parallel and their combined apparatus of which are connected to the indoor heat exchanger and the outdoor heat exchanger respective. Said capillaries in parallel expansion valves in , parallel or said combined apparatus consist of a three-way valve or two one way …
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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 June 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2024.
- 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.