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EP0448173
European procedure
Extract from the Register of European Patents
EP About this file: EP0448173
| EP0448173 - Liquid crystal display device [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 09.04.1999 Database last updated on 11.04.2026 | Most recent event Tooltip | 07.12.2007 | Lapse of the patent in a contracting state | published on 09.01.2008 [2008/02] | Applicant(s) | For all designated states Koninklijke Philips Electronics N.V. Groenewoudseweg 1 5621 BA Eindhoven / NL | [N/P] |
| Former [1998/35] | For all designated states Koninklijke Philips Electronics N.V. Groenewoudseweg 1 5621 BA Eindhoven / NL | ||
| Former [1998/23] | For all designated states Philips Electronics N.V. Groenewoudseweg 1 5621 BA Eindhoven / NL | ||
| Former [1991/39] | For all designated states Philips Electronics N.V. Groenewoudseweg 1 NL-5621 BA Eindhoven / NL | Inventor(s) | 01 /
Mulkens, Johannes Catharina Hubertus c/o INT. OCTROOIBUREAU B.V. Prof. Holstlaan 6 NL-5656 AA Eindhoven / NL | 02 /
Heynderickx, Ingrid Emilienne Joanna Rita c/o INT. OCTROOIBUREAU B.V. Prof. Holstlaan 6 NL-5656 AA Eindhoven / NL | [1991/39] | Representative(s) | Raap, Adriaan Yde, et al Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven / NL | [N/P] |
| Former [1991/39] | Raap, Adriaan Yde, et al INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6 NL-5656 AA Eindhoven / NL | Application number, filing date | 91200611.1 | 20.03.1991 | [1991/39] | Priority number, date | NL19900000686 | 23.03.1990 Original published format: NL 9000686 | [1991/39] | Filing language | NL | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0448173 | Date: | 25.09.1991 | Language: | EN | [1991/39] | Type: | B1 Patent specification | No.: | EP0448173 | Date: | 03.06.1998 | Language: | EN | [1998/23] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 08.08.1991 | Classification | IPC: | G02F1/137 | [1991/39] | CPC: |
G02F1/1396 (EP);
G02F1/133531 (EP)
| Designated contracting states | DE, FR, GB, IT, NL [1991/39] | Title | German: | Flüssigkristall-Wiedergabeanordnung | [1991/39] | English: | Liquid crystal display device | [1991/39] | French: | Dispositif d'affichage à cristal liquide | [1991/39] | Examination procedure | 24.03.1992 | Examination requested [1992/22] | 09.08.1993 | Despatch of a communication from the examining division (Time limit: M04) | 22.11.1993 | Reply to a communication from the examining division | 16.03.1994 | Despatch of a communication from the examining division (Time limit: M04) | 22.06.1994 | Reply to a communication from the examining division | 15.11.1994 | Despatch of communication that the application is refused, reason: substantive examination {1} | 25.09.1997 | Despatch of communication of intention to grant (Approval: Yes) | 12.11.1997 | Communication of intention to grant the patent | 23.02.1998 | Fee for grant paid | 23.02.1998 | Fee for publishing/printing paid | Appeal following examination | 12.12.1994 | Appeal received No. T0982/94 | 12.12.1994 | Statement of grounds filed | 16.09.1997 | Result of appeal procedure: remittal for grant | Opposition(s) | 04.03.1999 | No opposition filed within time limit [1999/21] | Fees paid | Renewal fee | 30.03.1993 | Renewal fee patent year 03 | 29.03.1994 | Renewal fee patent year 04 | 31.03.1995 | Renewal fee patent year 05 | 01.04.1996 | Renewal fee patent year 06 | 01.04.1997 | Renewal fee patent year 07 | 31.03.1998 | Renewal fee patent year 08 |
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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. | Lapses during opposition Tooltip | IT | 03.06.1998 | NL | 03.06.1998 | [2008/02] |
| Former [2003/07] | IT | 03.06.1998 | |
| NL | 03.06.1998 | ||
| Former [1999/42] | IT | 03.06.1998 | Documents cited: | Search | [AD] EP0264667 (HOFFMANN LA ROCHE et al.) [AD] | [A] US4039252 (MIZUNO FUMIO et al.) [A] | [A] JOURNAL OF APPLIED PHYSICS, vol. 48, no. 4, April 1977, pages 1426-1431, American Institute of Physics; M. GOSCIANSKI: "Optical characteristics of twisted nematic liquid crystals: Application to the improvement of the scanning capability in matrix displays" [A] |