Method of producing epoxides
CA 2370070 A1 · Owner: Loeker, Frank · Inventors: Leitner, Walter; Loeker, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the production of epoxy resins by oxidizing olefins with molecular oxygen using an aldehyde additive. The inventive method is characterized by carrying out the oxidation in compressed carbonic acid that is oxidation-stable, that reduces the explosion hazard and that is toxicologically and ecologically safe vis-à-vis many conventional organic solvents.
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 March 28, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 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.