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EP0198954
European procedure
Extract from the Register of European Patents
EP About this file: EP0198954
| EP0198954 - Liquid crystal display [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 12.01.1991 Database last updated on 22.04.2025 | Most recent event Tooltip | 12.01.1991 | No opposition filed within time limit | published on 06.03.1991 [1991/10] | Applicant(s) | For all designated states International Business Machines Corporation New Orchard Road Armonk, NY 10504 / US | [N/P] |
| Former [1986/44] | For all designated states International Business Machines Corporation Old Orchard Road Armonk, N.Y. 10504 / US | Inventor(s) | 01 /
Larsen, Thor Arne 17 Niles Drive Woodstock New York 12498 / US | [1986/44] | Representative(s) | Grant, Iain Murray IBM United Kingdom Limited Intellectual Property Department Hursley Park Winchester Hampshire SO21 2JN / GB | [N/P] |
| Former [1986/44] | Grant, Iain Murray IBM United Kingdom Limited Intellectual Property Department Hursley Park Winchester Hampshire SO21 2JN / GB | Application number, filing date | 85115323.9 | 03.12.1985 | [1986/44] | Priority number, date | US19850724128 | 17.04.1985 Original published format: US 724128 | [1986/44] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0198954 | Date: | 29.10.1986 | Language: | EN | [1986/44] | Type: | B1 Patent specification | No.: | EP0198954 | Date: | 21.03.1990 | Language: | EN | [1990/12] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 27.08.1986 | Classification | IPC: | G02F1/133, G09G3/36 | [1986/44] | CPC: |
G02F1/136277 (EP,US);
G09G3/3648 (EP,US);
G09G2300/0814 (EP,US);
G09G2300/0842 (EP,US)
| Designated contracting states | DE, FR, GB [1986/44] | Title | German: | Flüssigkristallanzeige | [1986/44] | English: | Liquid crystal display | [1986/44] | French: | Affichage à cristal liquide | [1986/44] | Examination procedure | 24.02.1987 | Examination requested [1987/18] | 28.07.1988 | Despatch of a communication from the examining division (Time limit: M04) | 25.11.1988 | Reply to a communication from the examining division | 09.02.1989 | Despatch of a communication from the examining division (Time limit: M04) | 23.02.1989 | Reply to a communication from the examining division | 01.06.1989 | Despatch of communication of intention to grant (Approval: Yes) | 28.08.1989 | Communication of intention to grant the patent | 08.09.1989 | Fee for grant paid | 08.09.1989 | Fee for publishing/printing paid | Opposition(s) | 22.12.1990 | No opposition filed within time limit [1991/10] | Fees paid | Renewal fee | 11.12.1987 | Renewal fee patent year 03 | 30.11.1988 | Renewal fee patent year 04 | 14.12.1989 | 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 | EP0034796 [ ] (TOKYO SHIBAURA ELECTRIC CO [JP]); | US4443064 [ ] (GRINBERG JAN [US], et al) | [Y] - IBM TECHNICAL DISCLOSURE BULLETIN, vol. 24, no. 7B, December 1981 S.W. DEPP A. JULIANA "Method of fabricating FET in polycrystalline silicon" pages 3640-3641 | [AD] - IEEE ELECTRON DEVICE LETTERS, vol. EDL-1, no. 9, September 1980 D.J. DIMARIA et al. "Electrically-Alterable Memory Using a Dual Electron Injector Structure" pages 179-181 | [A] - IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 8, January 1981 S.W.DEEP, A. JULIANA "Liquid Crystal Display Driver Circuit and Polysilicon Components Therefor" pages 3863-3864 | [A] - IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 6, November 1980 S.W. DEEP et al. "Liquid Crystal Drive Circuit" pages 2557-2558 |