Working media for a thermodynamic engineering device operating in accordance with the gu thermodynamic cycle
CA 2008677 C · 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
A new kind of working medium that can be applied to Gu's thermodynamic cycle system is provided. Such a working medium can enable the curves of the evaporation heat exchange process and the condensation heat exchange process in the thermodynamic cycle system to be non-parallel in the temperature entropy diagram, that is, the isobaric phase transformation curves of such substance are not parallel with each other in the temperature entropy diagram.
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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 January 26, 1990 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 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.