Cryogenic temperature control system
CA 2117944 C · Owner: Masse, Normand · Inventors: De Langavant, Jean-Jacques; Masse, Normand; De Langavant, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cryogenic cooling system for transport vehicles. The cooling system includes an evaporator supplied with liquid CO2 from a fill tank. A gas driven pump circulates liquid CO2 from the fill tank to the evaporator. Working fluid is supplied to gas pump from the evaporator in the form of CO2 gas.
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 October 12, 1994 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2016.
- 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.