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EP0251548
European procedure
Extract from the Register of European Patents
EP About this file: EP0251548
| EP0251548 - Liquid crystal device with chemically-induced high-tilt alignment coating [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 30.07.1994 Database last updated on 03.09.2024 | Most recent event Tooltip | 30.07.1994 | No opposition filed within time limit | published on 21.09.1994 [1994/38] | Applicant(s) | For all designated states AT&T Corp. 32 Avenue of the Americas New York, NY 10013-2412 / US | [1988/01] | Inventor(s) | 01 /
Filas, Robert William 26 Blossom Drive Bridgewater Township New Jersey 07920 / US | 02 /
Patel, Jayantilal Shamjibhai 2352 Longfellow Avenue Scotch Plains New Jersey 07076 / US | [1988/01] | Representative(s) | Johnston, Kenneth Graham, et al Lucent Technologies EUR-IP UK Ltd Unit 18, Core 3 Workzone Innova Business Park Electric Avenue Enfield, EN3 7XB / GB | [N/P] |
| Former [1988/01] | Johnston, Kenneth Graham, et al AT&T (UK) Ltd. 5 Mornington Road Woodford Green Essex, IG8 OTU / GB | Application number, filing date | 87305312.8 | 16.06.1987 | [1988/01] | Priority number, date | US19860878117 | 25.06.1986 Original published format: US 878117 | [1988/01] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0251548 | Date: | 07.01.1988 | Language: | EN | [1988/01] | Type: | A3 Search report | No.: | EP0251548 | Date: | 14.09.1988 | Language: | EN | [1988/37] | Type: | B1 Patent specification | No.: | EP0251548 | Date: | 29.09.1993 | Language: | EN | [1993/39] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 25.07.1988 | Classification | IPC: | G02F1/133 | [1988/01] | CPC: |
G02F1/133719 (EP,US);
Y10S359/90 (EP,US)
| Designated contracting states | BE, CH, DE, ES, FR, GB, IT, LI, NL, SE [1988/01] | Title | German: | Flüssigkristallvorrichtung mit einem Orientierungsüberzug, der einen Höhenkippwinkel chemisch induziert | [1988/01] | English: | Liquid crystal device with chemically-induced high-tilt alignment coating | [1988/01] | French: | Dispositif à cristal liquide possédant une couche d'alignement induisant chimiquement un angle d'inclinaison élevé | [1988/01] | Examination procedure | 06.03.1989 | Examination requested [1989/20] | 16.04.1991 | Despatch of a communication from the examining division (Time limit: M06) | 15.10.1991 | Reply to a communication from the examining division | 17.06.1992 | Despatch of a communication from the examining division (Time limit: M06) | 30.10.1992 | Reply to a communication from the examining division | 23.11.1992 | Despatch of communication of intention to grant (Approval: Yes) | 01.04.1993 | Communication of intention to grant the patent | 10.06.1993 | Fee for grant paid | 10.06.1993 | Fee for publishing/printing paid | Opposition(s) | 30.06.1994 | No opposition filed within time limit [1994/38] | Fees paid | Renewal fee | 16.06.1989 | Renewal fee patent year 03 | 18.06.1990 | Renewal fee patent year 04 | 17.12.1990 | Renewal fee patent year 05 | 17.06.1992 | Renewal fee patent year 06 | 21.06.1993 | Renewal fee patent year 07 |
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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]DE3150830 (CANON KK [JP]); | [A]US4437731 (SUDO RYOICHI [JP], et al); | [A]US3854793 (KAHN F) | [A] - MOLECULAR CRYSTALS & LIQUID CRYSTALS, vol. 60, nos. 1&2, 1980, pages 37-52, Gordon and Breach Science Publ. Inc., New York, US; T. UCHIDA et al.: "Liquid crystal alignments and surface energy" |