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EP0006156
European procedure
Extract from the Register of European Patents
EP About this file: EP0006156
| EP0006156 - A process for the preparation of dihydro-4,4-dimethyl-2,3-furandion [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 14.09.2016 Database last updated on 19.10.2024 | Most recent event Tooltip | 14.09.2016 | No opposition filed within time limit | Applicant(s) | For all designated states F. HOFFMANN-LA ROCHE & CO. Aktiengesellschaft Postfach 3255 4002 Basel / CH | [N/P] |
| Former [1980/12] | For all designated states F. HOFFMANN-LA ROCHE & CO. Aktiengesellschaft Postfach 3255 CH-4002 Basel / CH | ||
| Former [1980/12] | For all designated states F. HOFFMANN-LA ROCHE & CIE 124-184 Grenzacherstrasse CH-4002 Basel / CH | Inventor(s) | 01 /
Schmid, Max, Dr. Stapferstrasse 21 CH-5200 Brugg. / CH | [N/P] | Representative(s) | Lederer, Franz, et al Lederer & Keller Patentanwälte Unsöldstrasse 2 80538 München / DE | [N/P] |
| Former [2008/42] | Lederer, Franz, et al Lederer & Keller Patentanwälte Prinzregentenstrasse 16 80538 München / DE | ||
| Former [1981/26] | Lederer, Franz, Dr., et al Vanderwerth, Lederer & Riederer Patentanwälte Lucile-Grahn-Strasse 22 D-8000 München 80 / DE | Application number, filing date | 79101658.7 | 30.05.1979 | Priority number, date | CH19780005883 | 30.05.1978 Original published format: CH 588378 | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0006156 | Date: | 09.01.1980 | Language: | DE | [N/P] | Type: | B1 Patent specification | No.: | EP0006156 | Date: | 01.07.1981 | Language: | DE | [1981/26] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 23.10.1979 | Classification | IPC: | C07D307/32, C07D307/60, C07B3/00 | [1981/26] | CPC: |
C07D307/60 (EP,US)
| Designated contracting states | AT, BE, CH, DE, FR, GB, IT, NL | Title | German: | Verfahren zur Herstellung von Dihydro-4,4-dimethyl-2,3-furandion | English: | A process for the preparation of dihydro-4,4-dimethyl-2,3-furandion | French: | Procédé de préparation de dihydro-4,4-diméthyl-2,3-furandione | Examination procedure | 28.11.1979 | Examination requested [1980/04] | 20.03.1980 | Despatch of a communication from the examining division (Time limit: M06) | 02.09.1980 | Reply to a communication from the examining division | 27.10.1980 | Despatch of communication of intention to grant (Approval: ) | 25.11.1980 | Communication of intention to grant the patent | 04.02.1981 | Fee for grant paid | 04.02.1981 | Fee for publishing/printing paid | Opposition(s) | 07.05.1982 | No opposition filed within time limit [ N /P ] | Fees paid | Renewal fee | 05.12.1980 | Renewal fee patent year 03 |
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| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Documents cited: | Search | [A]DD32628 ; | [A]DD37505 ; | [A]DD41651 ; | [A]DE1033652 (UPJOHN CO); | [A]CH471111 (DELMAR CHEM [CA]); | [A]DE1568755 (HOFFMANN LA ROCHE); | [A]AT337663B (BASF AG [DE]) | [X] - BEILSTEINS HANDBUCH DER ORGANISCHEN CHEMIE, 4. Auflage, Band 17Seite 5848. | [X] - BEILSTEINS HANDBUCH DER ORGANISCHEN HCEMIE, 4. Auflage, Band 18Seite 23. |