-
EP0520264
European procedure
Extract from the Register of European Patents
EP About this file: EP0520264
| EP0520264 - Process for the preparation of malonic acid dialkyle esters [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 02.02.1996 Database last updated on 31.08.2024 | Most recent event Tooltip | 02.02.1996 | No opposition filed within time limit | published on 20.03.1996 [1996/12] | Applicant(s) | For all designated states BASF Aktiengesellschaft Carl-Bosch-Strasse 38 67063 Ludwigshafen / DE | [N/P] |
| Former [1993/01] | For all designated states BASF Aktiengesellschaft Carl-Bosch-Strasse 38 D-67063 Ludwigshafen / DE | Inventor(s) | 01 /
Schuster, Ludwig, Dr. Weinheimer Strasse 44 W-6703 Limburgerhof / DE | 02 /
Halbritter, Klaus, Dr. Leisberg 32 W-6900 Heidelberg / DE | [1993/01] | Application number, filing date | 92109975.0 | 13.06.1992 | [1993/01] | Priority number, date | DE19914120721 | 22.06.1991 Original published format: DE 4120721 | [1993/01] | Filing language | DE | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0520264 | Date: | 30.12.1992 | Language: | DE | [1992/53] | Type: | A3 Search report | No.: | EP0520264 | Date: | 12.05.1993 | Language: | DE | [1993/19] | Type: | B1 Patent specification | No.: | EP0520264 | Date: | 29.03.1995 | Language: | DE | [1995/13] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 22.03.1993 | Classification | IPC: | C07C69/38, C07C67/46 | [1993/01] | CPC: |
C07C67/46 (EP,US)
| C-Set: |
C07C67/46, C07C69/38 (EP,US)
| Designated contracting states | AT, CH, DE, FR, GB, IT, LI [1993/01] | Title | German: | Verfahren zur Herstellung von Malonsäuredialkylestern | [1993/01] | English: | Process for the preparation of malonic acid dialkyle esters | [1993/01] | French: | Procédé de préparation de diesters alkyliques d'acide malonique | [1993/01] | Examination procedure | 27.04.1993 | Examination requested [1993/25] | 23.08.1994 | Despatch of communication of intention to grant (Approval: Yes) | 29.09.1994 | Communication of intention to grant the patent | 31.10.1994 | Fee for grant paid | 31.10.1994 | Fee for publishing/printing paid | Opposition(s) | 30.12.1995 | No opposition filed within time limit [1996/12] | Fees paid | Renewal fee | 27.06.1994 | Renewal fee patent year 03 |
| Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
| 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 | [AD]US4251447 (PERRIN CHARLES L); | [AD]US4360691 (PERRIN CHARLES L) |