Production of ethylene oxide from ethylene and oxygen
CA 2517360 C · Owner: Matusz, Marek · Inventors: Matusz, Marek; Te Raa, Arend Jan; Evans, Wayne Errol
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of manufacturing ethylene oxide by contacting an epoxidation reactor feed that can comprise ethylene, oxygen and a concentration of carbon dioxide with a high selectivity epoxidation catalyst. The contacting of the epoxidation reactor feed is conducted under epoxidation reaction conditions so that the performance of the high selectivity epoxidation catalyst is enhanced. A low carbon dioxide concentration in the epoxidation reactor feed contributes to the enhancement of the catalytic performance of the high selectivity epoxidation catalyst by, for example, improving catalyst stability selectivity and activity.
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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 February 26, 2004 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2026.
- 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.