Process for the reclamation of spent alkanolamine solution
CA 2374880 A1 · Owner: George, Joseph T. Jr. · Inventors: George, Joseph T. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the reclamation of spent aqueous alkanolamine solutions comprising contacting a spent aqueous alkanolamine solution (10) with a strong base ion exchange vesin (40, 50) for time sufficient to sorb from the aqueous alkanolamine solution at least a portion of the accumulated ions and after a high concentration of ions accumulate on the resin regenerating the strong , base ion exchange resin by: (a) purging the resin with water or nitrogen (b) , contacting the strong base ion exchange resin with a sodium chloride solution for a time sufficient to remove the ions (c) purging the resin to remove the , sodium chloride solution (d) contacting the resin with an alkali metal …
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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 June 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 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.