EP0128489 - Process for the preparation of dialkyl esters of succinylsuccinic acid [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 22.09.1990 Database last updated on 31.08.2024 | Most recent event Tooltip | 22.09.1990 | No opposition filed within time limit | published on 14.11.1990 [1990/46] | Applicant(s) | For all designated states HOECHST AKTIENGESELLSCHAFT 65926 Frankfurt am Main / DE | [N/P] |
Former [1984/51] | For all designated states HOECHST AKTIENGESELLSCHAFT D-65926 Frankfurt am Main / DE | Inventor(s) | 01 /
Heise, Hartmut, Dr. Am Rehsteig 8 D-6232 Bad Soden am Taunus / DE | 02 /
Hintzmann, Manfred, Dr. Sachsenring 48 D-6238 Hofheim am Taunus / DE | 03 /
Brückmann, Konrad Limburger Strasse 42e D-6240 Köningstein/Taunus / DE | [1984/51] | Application number, filing date | 84106302.7 | 01.06.1984 | [1984/51] | Priority number, date | DE19833320415 | 06.06.1983 Original published format: DE 3320415 | [1984/51] | Filing language | DE | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0128489 | Date: | 19.12.1984 | Language: | DE | [1984/51] | Type: | A3 Search report | No.: | EP0128489 | Date: | 06.08.1986 | Language: | DE | [1986/32] | Type: | B1 Patent specification | No.: | EP0128489 | Date: | 29.11.1989 | Language: | DE | [1989/48] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 19.06.1986 | Classification | IPC: | C07C67/343, C07C69/757 | [1984/51] | CPC: |
C07C67/343 (EP)
| Designated contracting states | BE, CH, DE, FR, GB, IT, LI [1984/51] | Title | German: | Verfahren zur Herstellung von Succinylobernsteinsäuredialkylestern | [1984/51] | English: | Process for the preparation of dialkyl esters of succinylsuccinic acid | [1984/51] | French: | Procédé de préparation d'esters dialkyliques de l'acide succinylsuccinique | [1984/51] | Examination procedure | 09.10.1986 | Examination requested [1986/49] | 17.01.1989 | Despatch of communication of intention to grant (Approval: Yes) | 31.05.1989 | Communication of intention to grant the patent | 08.08.1989 | Fee for grant paid | 08.08.1989 | Fee for publishing/printing paid | Opposition(s) | 30.08.1990 | No opposition filed within time limit [1990/45] | Fees paid | Renewal fee | 14.05.1986 | Renewal fee patent year 03 | 15.05.1987 | Renewal fee patent year 04 | 11.05.1988 | Renewal fee patent year 05 | 13.05.1989 | Renewal fee patent year 06 |
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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 | [X]JP50019738 ; | [Y]US3024268 (STRUVE WILLIAM S) | [X] - CHEMICAL ABSTRACTS, Band 83, 1975, Seite 464, Nr. 27711h, Columbus, Ohio, US; & JP-A-50 019 738 (MITSUBISHI CHEMICAL INDUSTRIES CO., LTD.) 01.03.1975, & JP50019738 A 00000000 |