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EP0255020
European procedure
Extract from the Register of European Patents
EP About this file: EP0255020
| EP0255020 - Water soluble triphenodioxazine compounds, process for their preparation and their use as dyestuffs [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 20.07.1991 Database last updated on 02.11.2024 | Most recent event Tooltip | 20.07.1991 | No opposition filed within time limit | published on 11.09.1991 [1991/37] | Applicant(s) | For all designated states HOECHST AKTIENGESELLSCHAFT 65926 Frankfurt am Main / DE | [N/P] |
| Former [1988/05] | For all designated states HOECHST AKTIENGESELLSCHAFT D-65926 Frankfurt am Main / DE | Inventor(s) | 01 /
Schwaiger, Günther, Dr. Johannesallee 41 D-6230 Frankfurt am Main 80 / DE | 02 /
Springer, Hartmut, Dr. Am Erdbeerstein 27 D-6240 Königstein/Taunus / DE | 03 /
Helmling, Walter, Dr. Fichtestrasse 29 D-6238 Hofheim am Taunus / DE | [1988/05] | Application number, filing date | 87110515.1 | 21.07.1987 | [1988/05] | Priority number, date | DE19863625346 | 26.07.1986 Original published format: DE 3625346 | [1988/05] | Filing language | DE | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0255020 | Date: | 03.02.1988 | Language: | DE | [1988/05] | Type: | A3 Search report | No.: | EP0255020 | Date: | 30.03.1988 | Language: | DE | [1988/13] | Type: | B1 Patent specification | No.: | EP0255020 | Date: | 19.09.1990 | Language: | DE | [1990/38] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 10.02.1988 | Classification | IPC: | C09B62/002, C07D249/18, D06P1/38 | [1988/05] | CPC: |
C07D498/02 (KR);
C07D498/04 (EP,US);
C09B62/5033 (EP,US)
| Designated contracting states | BE, CH, DE, ES, FR, GB, IT, LI [1988/05] | Title | German: | Wasserlösliche Triphendioxazin-Verbindungen, Verfahren zu ihrer Herstellung und ihre Verwendung als Farbstoffe | [1988/05] | English: | Water soluble triphenodioxazine compounds, process for their preparation and their use as dyestuffs | [1988/05] | French: | Composés triphénodioxaziniques solubles dans l'eau, leur procédé de préparation et leur emploi comme colorants | [1988/05] | Examination procedure | 17.02.1988 | Examination requested [1988/16] | 17.04.1989 | Despatch of a communication from the examining division (Time limit: M04) | 07.07.1989 | Reply to a communication from the examining division | 04.10.1989 | Despatch of communication of intention to grant (Approval: Yes) | 15.01.1990 | Communication of intention to grant the patent | 14.04.1990 | Fee for grant paid | 14.04.1990 | Fee for publishing/printing paid | Opposition(s) | 20.06.1991 | No opposition filed within time limit [1991/37] | Fees paid | Renewal fee | 10.06.1989 | Renewal fee patent year 03 | 16.06.1990 | 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]FR2351205 (HOECHST AG [DE]); | [AP]EP0222098 (HOECHST AG [DE]) |