Removal of hydrogen sulphide and carbonyl sulphide from gaseous mixtures
CA 1163778 A · Owner: Shell Canada Limited · Inventors: Deal, Carl H. Jr.; Lieder, Charles A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hydrogen sulphide and carbonyl sulphide are removed from a gaseous mixture in a staged procedure characterized by conversion of the hydrogen sulphide to produce sulphur in aqueous solution, hydrolysis of the carbonyl sulphide remaining in the gaseous mixture to produce hydrogen sulphide and carbon dioxide and removal, of the hydrogen sulphide from the gas stream.
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
- Granted March 20, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2001.
- 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.