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EP0073922
European procedure
Extract from the Register of European Patents
EP About this file: EP0073922
| EP0073922 - Process for the purification and recovery of the impure catalyst solution obtained in the carbonylation of methyl acetate and/or dimethyl ether [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 03.10.1986 Database last updated on 15.06.2024 | Most recent event Tooltip | 03.10.1986 | No opposition filed within time limit | published on 20.11.1986 [1986/47] | Applicant(s) | For all designated states HOECHST AKTIENGESELLSCHAFT 65926 Frankfurt am Main / DE | [N/P] |
| Former [1983/11] | For all designated states HOECHST AKTIENGESELLSCHAFT D-65926 Frankfurt am Main / DE | Inventor(s) | 01 /
Erpenbach, Heinz, Dr. Oberbuschweg 22 D-5000 Köln 50 / DE | 02 /
Gehrmann, Klaus, Dr. Geschwister-Scholl-Strasse 32 D-5042 Erftstadt / DE | 03 /
Lork, Winfried Siegfried-von-Westerburg-Strasse 14 D-5042 Erftstadt / DE | 04 /
Prinz, Peter von Geyr-Ring 104 D-5030 Hürth / DE | [1983/11] | Application number, filing date | 82106850.9 | 29.07.1982 | [1983/11] | Priority number, date | DE19813134347 | 31.08.1981 Original published format: DE 3134347 | [1983/11] | Filing language | DE | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0073922 | Date: | 16.03.1983 | Language: | DE | [1983/11] | Type: | A3 Search report | No.: | EP0073922 | Date: | 09.05.1984 | Language: | DE | [1984/19] | Type: | B1 Patent specification | No.: | EP0073922 | Date: | 04.12.1985 | Language: | DE | [1985/49] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 06.03.1984 | Classification | IPC: | B01J31/40, C07C51/54 | [1983/11] | CPC: |
B01J31/0268 (EP,US);
B01J31/0239 (EP,US);
B01J31/20 (EP,US);
B01J31/4038 (EP,US);
B01J31/4046 (EP,US);
C07C51/48 (EP,US);
C07C51/573 (EP,US);
C07C67/36 (EP,US);
C07C67/37 (EP,US);
C07C67/54 (EP,US);
B01J2231/34 (EP,US);
B01J2531/82 (EP,US);
| C-Set: |
C07C51/48, C07C53/08 (EP,US);
C07C51/573, C07C53/12 (US,EP);
C07C67/36, C07C69/16 (US,EP);
C07C67/37, C07C69/16 (US,EP); | Designated contracting states | AT, BE, CH, DE, FR, GB, IT, LI, NL [1983/11] | Title | German: | Verfahren zur Reinigung und Rückgewinnung der bei der Carbonylierung von Methylacetat und/oder Dimethylether anfallenden, verunreinigten Katalysatorlösung | [1983/11] | English: | Process for the purification and recovery of the impure catalyst solution obtained in the carbonylation of methyl acetate and/or dimethyl ether | [1983/11] | French: | Procédé de purification et de récupération de la solution impure du catalyseur obtenue lors de la carbonylisation de l'acétate de méthyl et/ou de l'éther diméthylique | [1983/11] | Examination procedure | 23.05.1984 | Examination requested [1984/31] | 24.04.1985 | Despatch of communication of intention to grant (Approval: ) | 14.05.1985 | Communication of intention to grant the patent | 30.07.1985 | Fee for grant paid | 30.07.1985 | Fee for publishing/printing paid | Opposition(s) | 05.09.1986 | No opposition filed within time limit [1986/47] | Fees paid | Renewal fee | 15.06.1984 | Renewal fee patent year 03 | 14.06.1985 | Renewal fee patent year 04 |
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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]DE869203 (BASF AG); | [A]US3065242 (THOMAS ALDERSON, et al); | [A]US3634291 (USAMI SEIJI, et al); | [AD]EP0026280 (HOECHST AG [DE]) |