Process and apparatus for removing acid gas from a gaseous composition
CA 2083684 A1 · Owner: Exxon Chemical Patents, Inc. · Inventors: Ruziska, Philip Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
P05933.S05, ABSTRACT OF THE DISCLOSURE A process and apparatus for removing acid gas such as, carbon dioxide, from a gaseous composition. The gaseous composition is subjected to an absorption step wherein it is, contacted with a scrubbing solution incorporating a basic alkali metal compound, and a sterically hindered amine activator compound. Then, the solution is flashed to remove absorbed acid gas. Thereafter, the scrubbing solution is subjected to regeneration for additional removal of acid gas and recycled to the absorption step.
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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 November 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2014.
- 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.