Expired European patentEurope
1,4-Epoxy-trimethyl-butenylidene-cyclohexanes (I), process for their preparation, use of (I) as fragrance and/or flavouring substance, fragrance and/or flavour compositions containing the cyclohexanes
EP 0000719 B1 · Applicant: L. Givaudan & Cie Société Anonyme
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 21, 1978 and granted May 20, 1981. A European patent lasts at most 20 years from filing, so its term ended July 21, 1998.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by January 21, 2004.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledJuly 21, 1978
PublishedFebruary 21, 1979
GrantedMay 20, 1981
Term endedJuly 21, 1998
Application numberEP 78100472
Classification (CPC)C07C403/08 +2 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.