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Extract from the Register of European Patents

EP About this file: EP0587913

EP0587913 - LIQUID-CRYSTAL DISPLAY DEVICE WITH ADDRESSING SCHEME TO ACHIEVE HIGH CONTRAST AND HIGH BRIGHTNESS VALUES WHILE MAINTAINING FAST SWITCHING [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  03.09.1999
Database last updated on 03.10.2024
Most recent event   Tooltip03.09.1999No opposition filed within time limitpublished on 20.10.1999 [1999/42]
Applicant(s)For all designated states
Citizen Watch Co. Ltd.
1-1 Nishishinjuku 2-chome Shinjuku-Ku
Tokyo 163-04 / JP
[N/P]
Former [1994/12]For all designated states
CITIZEN WATCH CO. LTD.
1-1 Nishishinjuku 2-chome
Shinjuku-Ku Tokyo 163-04 / JP
Inventor(s)01 / WELZEN, Theo, L.
Bovenstraat 6
NL-6223 AD Maastricht / NL
[1994/12]
Representative(s)Adams, William Gordon, et al
RAWORTH, MOSS & COOK 36 Sydenham Road Croydon
Surrey CR0 2EF / GB
[N/P]
Former [1994/12]Adams, William Gordon, et al
RAWORTH, MOSS & COOK 36 Sydenham Road
Croydon Surrey CR0 2EF / GB
Application number, filing date93906873.001.04.1993
[1994/12]
WO1993JP00421
Priority number, dateNL1992000060601.04.1992         Original published format: NL 9200606
[1994/12]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9320550
Date:14.10.1993
Language:EN
[1993/25]
Type: A1 Application with search report 
No.:EP0587913
Date:23.03.1994
Language:EN
The application published by WIPO in one of the EPO official languages on 14.10.1993 takes the place of the publication of the European patent application.
[1994/12]
Type: B1 Patent specification 
No.:EP0587913
Date:28.10.1998
Language:EN
[1998/44]
Search report(s)International search report - published on:EP14.10.1993
ClassificationIPC:G09G3/36
[1994/12]
CPC:
G09G3/3625 (EP)
Designated contracting statesDE,   FR,   GB [1994/12]
TitleGerman:FLÜSSIGKRISTALLANZEIGE MIT EINEM ADRESSIERUNGSSCHEMA ZUM ERREICHEN VON HOHEM KONTRAST UND HOHER HELLIGKEIT MIT INSTANDHALTUNG VON SCHNELLEM SCHALTEN[1994/12]
English:LIQUID-CRYSTAL DISPLAY DEVICE WITH ADDRESSING SCHEME TO ACHIEVE HIGH CONTRAST AND HIGH BRIGHTNESS VALUES WHILE MAINTAINING FAST SWITCHING[1994/12]
French:DISPOSITIF D'AFFICHAGE A CRISTAUX LIQUIDES AVEC SYSTEME D'ADRESSAGE PERMETTANT D'OBTENIR DES VALEURS ELEVEES DE CONTRASTE ET DE LUMINOSITE TOUT EN CONSERVANT UNE GRANDE VITESSE DE COMMUTATION[1994/12]
Entry into regional phase18.12.1993National basic fee paid 
18.12.1993Designation fee(s) paid 
18.12.1993Examination fee paid 
Examination procedure18.12.1993Examination requested  [1994/12]
15.12.1995Despatch of a communication from the examining division (Time limit: M06)
08.06.1996Reply to a communication from the examining division
16.08.1996Despatch of a communication from the examining division (Time limit: M06)
14.02.1997Reply to a communication from the examining division
16.05.1997Despatch of a communication from the examining division (Time limit: M04)
09.09.1997Reply to a communication from the examining division
26.01.1998Despatch of communication of intention to grant (Approval: Yes)
30.04.1998Communication of intention to grant the patent
02.06.1998Fee for grant paid
02.06.1998Fee for publishing/printing paid
Opposition(s)29.07.1999No opposition filed within time limit [1999/42]
Fees paidRenewal fee
31.03.1995Renewal fee patent year 03
28.03.1996Renewal fee patent year 04
27.03.1997Renewal fee patent year 05
27.03.1998Renewal fee patent year 06
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Cited inInternational search[A]DE2752602
 [X]  - INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS 'Conference record of the 1988 international display research conference' 1988 , IEEE , NY
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.