Method and plant for simultaneous production of a natural gas for liquefaction and a liquid cut from natural gas
CA 2527381 C · Owner: Paradowski, Henri · Inventors: Paradowski, Henri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method comprises the following steps:(a) introduction of the feed natural gas (101) into a first distillation column (31) which gives a pre-treated natural gas (111) as top product said pre-treated natural gas (111) being practically free of hydrocarbons of C¿6?+ (b) the pre-treated natural gas (111) is introduced into a liquid natural gas recovery unit (19) comprising at least one second distillation column (49) to produce as top product a purified natural gas (151) and a liquid natural gas cut (15) and (c) the natural gas for liquefaction (161) is formed by the purified natural gas (151) from step (b).
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 May 28, 2004 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2026.
- 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.