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EP0067354
European procedure
Extract from the Register of European Patents
EP About this file: EP0067354
| EP0067354 - Liquid crystal material containing azo dyes [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 09.12.1986 Database last updated on 31.08.2024 | Most recent event Tooltip | 09.12.1986 | No opposition filed within time limit | published on 28.01.1987 [1987/05] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1982/51] | 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 | [1982/51] | Application number, filing date | 82104773.5 | 01.06.1982 | [1982/51] | Priority number, date | DE19813123519 | 13.06.1981 Original published format: DE 3123519 | [1982/51] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0067354 | Date: | 22.12.1982 | Language: | DE | [1982/51] | Type: | B1 Patent specification | No.: | EP0067354 | Date: | 05.02.1986 | Language: | DE | [1986/06] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 01.11.1982 | Classification | IPC: | C09K19/60 | [1986/06] | CPC: |
C09K19/601 (EP,US);
C09B35/08 (EP,US)
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| Former IPC [1982/51] | C09K3/34 | Designated contracting states | CH, DE, FR, GB, IT, LI, NL [1982/51] | Title | German: | Flüssigkristallines Material enthaltend Azofarbstoffe | [1982/51] | English: | Liquid crystal material containing azo dyes | [1982/51] | French: | Matière liquide cristalline contenant des colorants azoiques | [1982/51] | Examination procedure | 01.06.1982 | Examination requested [1982/51] | 13.01.1984 | Despatch of a communication from the examining division (Time limit: M04) | 18.05.1984 | Reply to a communication from the examining division | 22.06.1984 | Despatch of a communication from the examining division (Time limit: M04) | 25.10.1984 | Reply to a communication from the examining division | 07.12.1984 | Despatch of a communication from the examining division (Time limit: M02) | 11.02.1985 | Reply to a communication from the examining division | 19.04.1985 | Despatch of communication of intention to grant (Approval: ) | 16.07.1985 | Communication of intention to grant the patent | 23.07.1985 | Fee for grant paid | 23.07.1985 | Fee for publishing/printing paid | Opposition(s) | 06.11.1986 | No opposition filed within time limit [1987/05] | Fees paid | Renewal fee | 23.05.1984 | Renewal fee patent year 03 | 04.06.1985 | 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]US4128497 (COLE JR HERBERT S, et al); | [A]US4179395 (AFTERGUT SIEGFRIED [US], et al) | Examination | - MOLECULAR CRYSTALS & LIQUID CRYSTALS, vol.55, no.9, 1979, Gordon and Breach Science Publishers, Inc., London (GB) R.J. COX: "Liquid crystal quest-host systems", Seiten 1-32 |