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    Publication numberDE2653838 A1
    Publication typeApplication
    Application numberDE19762653838
    Publication dateJun 2, 1977
    Filing dateNov 26, 1976
    Priority dateNov 30, 1975
    Also published asDE2653838C2, US4156090
    Publication number19762653838, 762653838, DE 2653838 A1, DE 2653838A1, DE-A1-2653838, DE19762653838, DE2653838 A1, DE2653838A1, DE762653838
    InventorsFrank Dr Kienzle
    ApplicantHoffmann La Roche
    Export CitationBiBTeX, EndNote, RefMan
    Patent Citations (3), Non-Patent Citations (4), Referenced by (8), Classifications (30), Legal Events (6)
    External Links: DPMA, Espacenet
    Polyenverbindungen
    DE 2653838 A1
    Abstract  available in
    Description  available in
    Claims  available in
    Patent Citations
    Cited PatentFiling datePublication dateApplicantTitle
    DE1105869B *Sep 26, 1959May 4, 1961Hoffmann La RocheVerfahren zur Herstellung von alicyclischen Carotinoidverbindungen
    GB1250869A * Title not available
    US3000982 *Dec 1, 1959Sep 19, 1961Hoffmann La RochePreparation of carotenoid compounds
    * Cited by examiner
    Non-Patent Citations
    Reference
    1 *Angew.Chem., 72, 1960, S. 641
    2 *FIESER: Org. Chemie, Verlag Chemie, 1965, S. 1585
    3 *Helv.Chim. Acta, 53, 1970, S. 974-990
    4 *J.Chem.Soc. Perkin Trans. I, 1975, S. 2195-2204
    * Cited by examiner
    Referenced by
    Citing PatentFiling datePublication dateApplicantTitle
    EP0077439A2 *Jul 23, 1982Apr 27, 1983F. HOFFMANN-LA ROCHE & CO. AktiengesellschaftVerfahren zur Herstellung von Cyclohexenderivaten, sowie ein neues Ausgangsprodukt und neue Zwischenprodukte in diesem Verfahren
    EP0077439A3 *Jul 23, 1982Feb 1, 1984F. Hoffmann-La Roche & Co. AktiengesellschaftProcess for the preparation of cyclohexene derivatives, and a starting product and intermediary products in this process
    EP0101597A2 *Aug 10, 1983Feb 29, 1984F. HOFFMANN-LA ROCHE & CO. AktiengesellschaftVerfahren zur Herstellung von Astaxanthin und Zwischenprodukten in der Astaxanthin-Synthese
    EP0101597A3 *Aug 10, 1983Nov 27, 1985F. Hoffmann-La Roche & Co. AktiengesellschaftProcess for the preparation of astaxanthine and intermediates in the astaxanthine synthesis
    EP0455119A2 *Apr 24, 1991Nov 6, 1991BASF AktiengesellschaftVerfahren zur Herstellung von Canthaxanthin und Astaxanthin
    EP0455119A3 *Apr 24, 1991Apr 15, 1992Basf AktiengesellschaftProcess for the preparation of canthaxanthin and astaxanthin
    EP0733619A1 *Mar 9, 1996Sep 25, 1996BASF AktiengesellschaftVerfahren zur Herstellung von Astaxanthin
    US5654488 *Mar 15, 1996Aug 5, 1997Basf AktiengesellschaftPreparation of astaxanthin
    * Cited by examiner
    Classifications
    International ClassificationC09B23/00, C09B61/00, C07C403/14, C07D317/72, A23L1/275, C07C403/24, C07F7/18, C07C401/00, C07C45/67, C07F9/54, C07C67/00, C07C403/00, C09B57/00
    Cooperative ClassificationC07C2601/16, C07D317/72, C07C403/08, A23L5/47, C07C403/24, C07F7/1852, C07F9/5428, C07C45/673, C07C403/14
    European ClassificationC07C45/67C, C07D317/72, C07F7/18C4D4C, C07F9/54A2, A23L1/275S, C07C403/08, C07C403/24, C07C403/14
    Legal Events
    DateCodeEventDescription
    Dec 8, 19838110Request for examination paragraph 44
    Dec 21, 1989D2Grant after examination
    Mar 22, 19908327Change in the person/name/address of the patent owner
    Owner name: F. HOFFMANN-LA ROCHE AG, BASEL, CH
    Mar 22, 19908328Change in the person/name/address of the agent
    Free format text: LEDERER, F., DIPL.-CHEM. DR., 8000 MUENCHEN RIEDERER FRHR. VON PAAR ZU SCHOENAU, A., DIPL.-ING., PAT.-ANWAELTE, 8300 LANDSHUT
    Jun 13, 19908364No opposition during term of opposition
    Nov 10, 19948339Ceased/non-payment of the annual fee