Process for the elimination of hydrogen sulfide contained in a gaseous mixture
CA 1106149 A · Owner: Societe Anonyme Dite: Compagnie Francaise De Raffinage · Inventors: Rossarie, Jean; Maurin, Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for eliminating hydrogen sulfide contained in a gas to be purified comprising the steps of reacting the hydrogen sulfide with sulfur dioxide in a solvent and absorbing excess hydrogen sulfide contained in the partially purified gas in the same solvent and recycling the solution of hydrogen sulfide obtained in the absorption step to the reaction step. -17-
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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
- Granted August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 1998.
- 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.