Air conditioner
CA 2282127 A1 · Owner: Fujino, Masaki · Inventors: Tomoda, Hiroki; Katayama, Masashi; Inagaki, Takefumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an air conditioner having a refrigerant circuit in which a compressor a, four-way switching valve, an outdoor-side heat exchanger an expansion valve, and an, indoor-side heat exchanger are connected in succession via pipes the interior , of an, enclosed vessel of a compressor which contains a refrigerant compressing section and, an electric motor, is divided airtightly into a refrigerant discharge chamber and an, electric motor chamber, two refrigerant flow path pipes are provided on the electric, motor chamber side, and these refrigerant flow path pipes are appropriately switched, to the refrigerant discharge side and the refrigerant suction side of the compressor via, the four-way …
Read the whole patent
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 September 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 13, 2021.
- 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.