Trans-critical vapour compression cycle device
CA 2018250 C · Owner: Lorentzen, Gustav · Inventors: Lorentzen, Gustav
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vapour compression cycle device and a method of capacity control is disclosed involving the regulation of specific enthalpy at evaporator inlet by deliberate use of the pressure before throttling. Capacity is controlled by varying the refrigerant before throttling. In the super-critical state this can be done by varying the pressure and temperature independently.
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 June 5, 1990 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2012.
- 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.