Gas liquefaction process with partial condensation of mixed refrigerant at intermediate temperatures
CA 2322399 C · Owner: Air Products And Chemicals, Inc. · Inventors: Agrawal, Rakesh; Daugherty, Tamara Lynn; Roberts, Mark Julian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method of producing liquefied natural gas (LNG) whereby refrigeration for cooling, and liquefaction is provided by a mixed refrigerant system precooled by another, refrigeration system. At least one liquid stream is derived from the partial condensation, and separation of the mixed refrigerant at a temperature higher than the lowest, temperature provided by the precooling system when the mixed refrigerant is condensed, at a final highest pressure. When the mixed refrigerant is condensed at a pressure, lower than the final highest pressure condensation is effected at a , temperatures equal to higher than the lowest temperature provided by the precooling system. The mixed, refrigerant …
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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 October 5, 2000 and granted December 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2022.
- 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.