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EP0023991
European procedure
Extract from the Register of European Patents
EP About this file: EP0023991
| EP0023991 - Styryl dyestuffs, their preparation and their use in dyeing paper in particular [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 25.05.1984 Database last updated on 06.07.2024 | Most recent event Tooltip | 25.05.1984 | No opposition filed within time limit | published on 25.07.1984 [1984/30] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1981/07] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Beecken, Hermann, Dr. Curiestrasse 1 D-5060 Bergisch-Gladbach 2 / DE | [1981/07] | Application number, filing date | 80104229.2 | 18.07.1980 | [1981/07] | Priority number, date | DE19792932092 | 08.08.1979 Original published format: DE 2932092 | [1981/07] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0023991 | Date: | 18.02.1981 | Language: | DE | [1981/07] | Type: | B1 Patent specification | No.: | EP0023991 | Date: | 27.07.1983 | Language: | DE | [1983/30] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 28.11.1980 | Classification | IPC: | C09B23/14, D21H3/80, D06P1/42 | [1981/07] | CPC: |
C09B23/145 (EP,US)
| Designated contracting states | BE, CH, DE, FR, GB, IT, LI [1981/07] | Title | German: | Styrylfarbstoffe, ihre Herstellung und ihre Verwendung zum Färben von insbesondere Papier | [1981/07] | English: | Styryl dyestuffs, their preparation and their use in dyeing paper in particular | [1981/07] | French: | Colorants styryliques, leur préparation et leur utilisation pour la teinture, en particulier du papier | [1981/07] | Examination procedure | 18.07.1980 | Examination requested [1981/17] | 04.03.1982 | Despatch of a communication from the examining division (Time limit: M04) | 07.06.1982 | Reply to a communication from the examining division | 26.10.1982 | Despatch of communication of intention to grant (Approval: ) | 20.01.1983 | Communication of intention to grant the patent | 24.01.1983 | Fee for grant paid | 26.01.1983 | Fee for publishing/printing paid | Opposition(s) | 28.04.1984 | No opposition filed within time limit [1984/30] | Fees paid | Renewal fee | 15.07.1982 | Renewal fee patent year 03 | 22.06.1983 | 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 | FR2087210 [ ] (KODAK PATHE); | US2280253 [ ] (WERNER MULLER, et al); | US3582332 [ ] (BERTELSON ROBERT C, et al) |