Acid gas enrichment process
CA 2442810 A1 · Owner: Palmer, Gary · Inventors: Palmer, Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Processes for enriching acid gases for sulphur plant feeds and for producing a commercially valuable CO2 by-product include a sour gas stream contacting an absorbent in an absorber, and regenerating the absorbent to produce a regenerated absorbent and an acid gas stream. A portion of the acid gas stream is recycled to produce higher ratios of hydrogen sulphide to carbon dioxide. Multiple absorbers and recycle streams can be used.
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 September 26, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 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.
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.