Direct epoxidation process using a mixed catalyst system pretreated with a bromide containing agent
CA 2465556 A1 · Owner: Grey, Roger A. · Inventors: Grey, Roger A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The liquid-phase epoxidation reaction of an olefin with hydrogen and oxygen in the presence of a catalyst mixture comprising titanium zeolite and a supported catalyst surprisingly shows higher activity toward epoxide production when the supported palladium catalyst is pre-treated with bromide or where the , reaction is performed in the presence of an alkali or alkaline earth metal bromide compound.
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 October 3, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 3, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2024.
- 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.