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EP0038460
European procedure
Extract from the Register of European Patents
EP About this file: EP0038460
| EP0038460 - Liquid crystal materials comprising anthraquinone dyes [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 17.01.1985 Database last updated on 04.06.2024 | Most recent event Tooltip | 17.01.1985 | No opposition filed within time limit | published on 20.03.1985 [1985/12] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1981/43] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Claussen, Uwe, Dr. Carl-Rumpff-Strasse 29 D-5090 Leverkusen 1 / DE | 02 /
Schroeder, Bernd, Dr. Schulstrasse 8 D-2226 Eddelak / DE | 03 /
Kröck, Friedrich Wilhelm, Dr. Gerstenkamp 12 D-5000 Köln 80 / DE | [1981/43] | Application number, filing date | 81102570.9 | 06.04.1981 | [1981/43] | Priority number, date | DE19803014933 | 18.04.1980 Original published format: DE 3014933 | [1981/43] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0038460 | Date: | 28.10.1981 | Language: | DE | [1981/43] | Type: | B1 Patent specification | No.: | EP0038460 | Date: | 22.02.1984 | Language: | DE | [1984/08] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 13.07.1981 | Classification | IPC: | C09K3/34, C09B1/50 | [1981/43] | CPC: |
C09B1/50 (EP);
C09B1/20 (EP);
C09B1/542 (EP);
C09B5/24 (EP);
C09K19/603 (EP)
| Designated contracting states | CH, DE, FR, GB, IT, LI, NL [1981/43] | Title | German: | Flüssigkristalline Materialien enthaltend Anthrachinonfarbstoffe | [1981/43] | English: | Liquid crystal materials comprising anthraquinone dyes | [1981/43] | French: | Composition de cristaux liquides contenant des colorants anthraquinoniques | [1981/43] | Examination procedure | 06.04.1981 | Examination requested [1981/43] | 10.02.1982 | Despatch of a communication from the examining division (Time limit: M06) | 17.08.1982 | Reply to a communication from the examining division | 26.10.1982 | Despatch of a communication from the examining division (Time limit: M03) | 03.02.1983 | Reply to a communication from the examining division | 09.05.1983 | Despatch of communication of intention to grant (Approval: ) | 02.08.1983 | Communication of intention to grant the patent | 08.08.1983 | Fee for grant paid | 08.08.1983 | Fee for publishing/printing paid | Opposition(s) | 23.11.1984 | No opposition filed within time limit [1985/12] | Fees paid | Renewal fee | 21.03.1983 | Renewal fee patent year 03 |
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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 | DE2903095 [ ] (BBC BROWN BOVERI & CIE); | DE2920730 [ ] (MINNESOTA MINING & MFG); | DE2902177 [ ] (BBC BROWN BOVERI & CIE) |