Process for separating hydrocarbon gas constituents
CA 2286112 C · Owner: Cuellar, Kyle T. · Inventors: Wilkinson, John D.; Cuellar, Kyle T.; Hudson, Hank M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the recovery of ethane, ethylene propane, propylene and heavier , hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is divided into first (35) and second (32) streams and the second stream (32) , is expanded to the fractionation tower pressure and supplied to the column (18) at a mid-column feed position (33a 34a). A recycle stream (39) is , withdrawn from the tower overhead after it has been warmed and compressed and , is combined with the first stream (35). The combined stream (38) is cooled to condense substantially all of it, and is thereafter expanded to the fractionation tower (18) pressure and supplied to the fractionation tower at a top …
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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 April 16, 1998 and granted June 25, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 2020.
- 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.