A process for producing an epoxy compound, a flavor and fragrance composition containing the compound, and foods & drinks,perfumes,cosmetics a nd tobaccos respectively containingthe composition
CA 2390156 A1 · Owner: Higashi, Motoo · Inventors: Higashi, Motoo; Konno, Yuki; Ito, Nobuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the preparation of compounds of general formula (4): (4) (wherein R1 is alkyl having 5 or fewer carbon atoms alkenyl, or the like); , and aromatic compositions containing the compounds. A compound of general formula (4) is prepared by subjecting a compound of general formula (1): (1) (wherein X1 is chloro, bromo, or iodo) to Grignard reaction with R1MgX1 hydrolyzing the obtained compound to form a compound of general formula (3): (3) and reacting this compound with a base in the presence of a phase transfer catalyst.
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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 September 4, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 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.