Expired Canadian patentCanada
A reduced carbon dioxide emission system and method for providing power for refrigerant compression and electrical power for a light hydrocarbon gas liquefaction process using cooled air injection to the turbines
CA 2499575 C · Owner: Ward, Patrick B. · Inventors: Jones, Richard, Jr.; Ward, Patrick B.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for the production of liquified light hydrocarbon gases by a system and a process that produces a liquified gas product more efficiently and with reduced emissions of carbon dioxide (CO2) to the atmosphere.
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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 September 29, 2003 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 2003
GrantedJanuary 8, 2013
Term endedSeptember 29, 2023
Patent numberCA 2499575 C
Classification (IPC)F25J1/02 +2 more
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.