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EP0492222
European procedure
Extract from the Register of European Patents
EP About this file: EP0492222
| EP0492222 - Liquid crystal display device [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 19.09.1997 Database last updated on 28.03.2026 | Most recent event Tooltip | 19.09.1997 | No opposition filed within time limit | published on 05.11.1997 [1997/45] | Applicant(s) | For all designated states Merck Patent GmbH Postfach Frankfurter Strasse 250 64271 Darmstadt / DE | [N/P] |
| Former [1992/27] | For all designated states MERCK PATENT GmbH Postfach, Frankfurter Strasse 250 D-64271 Darmstadt / DE | Inventor(s) | 01 /
Finkenzeller, Ulrich, Dr. Waldpfad 74 W-6831 Plankstadt / DE | 02 /
Weber, Georg Wilhelm-Leuschner-Strasse 38 W-6101 Erzhausen / DE | 03 /
Reiffenrath, Volker Jahnstrasse 18 W-6101 Rossdorf / DE | [1992/27] | Application number, filing date | 91120994.8 | 06.12.1991 | [1992/27] | Priority number, date | EP19900124922 | 20.12.1990 Original published format: EP 90124922 | EP19910107201 | 03.05.1991 Original published format: EP 91107201 | [1992/27] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0492222 | Date: | 01.07.1992 | Language: | EN | [1992/27] | Type: | A3 Search report | No.: | EP0492222 | Date: | 30.09.1992 | Language: | EN | [1992/40] | Type: | B1 Patent specification | No.: | EP0492222 | Date: | 13.11.1996 | Language: | EN | [1996/46] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 13.08.1992 | Classification | IPC: | C09K19/04, C09K19/02, C09K19/42, C09K19/44 | [1992/40] | CPC: |
C09K19/0403 (EP);
C09K19/02 (EP);
C09K19/44 (EP);
C09K2019/0407 (EP)
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| Former IPC [1992/27] | C09K19/04, C09K19/42, C09K19/44, C09K19/02 | Designated contracting states | DE, GB [1992/27] | Title | German: | Flüssigkristallanzeige | [1992/27] | English: | Liquid crystal display device | [1992/27] | French: | Affichage à cristaux liquide | [1992/27] | Examination procedure | 04.03.1993 | Examination requested [1993/19] | 19.09.1994 | Despatch of a communication from the examining division (Time limit: M06) | 21.03.1995 | Reply to a communication from the examining division | 04.04.1995 | Despatch of a communication from the examining division (Time limit: M04) | 26.07.1995 | Reply to a communication from the examining division | 09.10.1995 | Despatch of communication of intention to grant (Approval: Yes) | 17.04.1996 | Communication of intention to grant the patent | 26.06.1996 | Fee for grant paid | 26.06.1996 | Fee for publishing/printing paid | Opposition(s) | 14.08.1997 | No opposition filed within time limit [1997/45] | Fees paid | Renewal fee | 13.12.1993 | Renewal fee patent year 03 | 07.12.1994 | Renewal fee patent year 04 | 08.12.1995 | Renewal fee patent year 05 |
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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] JP63216858 | [X] JP62103057 | [X] WORLD PATENTS INDEX LATEST Derwent Publications Ltd., London, GB; AN 88-296466 & JP-A-63 216 858 (SEIMI CHEM. K.K.) 9 September 1988 [X] | [X] WORLD PATENTS INDEX LATEST Derwent Publications Ltd., London, GB; AN 87-172923 & JP-A-62 103 057 (ASAHI GLASS) 13 May 1987 [X] |