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Extract from the Register of European Patents

EP About this file: EP0468882

EP0468882 - Liquid crystal compound [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  08.01.1996
Database last updated on 02.07.2024
Most recent event   Tooltip08.01.1996No opposition filed within time limitpublished on 14.02.1996 [1996/07]
Applicant(s)For all designated states
Showa Shell Sekiyu Kabushiki Kaisha
2-5, Kasumigaseki 3-chome Chiyoda-ku
Tokyo / JP
[1992/05]
Inventor(s)01 / Isozaki, Tadaaki, c/o SHOWA SHELL SEKIYU K.K.
2-5, Kasumigaseki 3-chome
Chiyoda-ku, Tokyo 100 / JP
02 / Mogamiya, Hiroyuki, c/o SHOWA SHELL SEKIYU K.K.
2-5, Kasumigaseki 3-chome
Chiyoda-ku, Tokyo 100 / JP
03 / Sakuma, Shigenori, c/o SHOWA SHELL SEKIYU K.K.
2-5, Kasumigaseki 3-chome
Chiyoda-ku, Tokyo 100 / JP
04 / Yamakawa, Noriko, c/o SHOWA SHELL SEKIYU K.K.
2-5, Kasumigaseki 3-chome
Chiyoda-ku, Tokyo 100 / JP
[1992/05]
Representative(s)Bourgognon, Jean-Marie, et al
Cabinet Flechner 22, Avenue de Friedland
75008 Paris / FR
[N/P]
Former [1992/05]Bourgognon, Jean-Marie, et al
Cabinet Flechner 22, Avenue de Friedland
F-75008 Paris / FR
Application number, filing date91402053.224.07.1991
[1992/05]
Priority number, dateJP1990019850026.07.1990         Original published format: JP 19850090
[1992/05]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0468882
Date:29.01.1992
Language:EN
[1992/05]
Type: B1 Patent specification 
No.:EP0468882
Date:22.02.1995
Language:EN
[1995/08]
Search report(s)(Supplementary) European search report - dispatched on:EP11.11.1991
ClassificationIPC:C07C69/88, C09K19/20
[1992/05]
CPC:
C07C69/90 (EP); C09K19/0266 (EP); C09K19/2021 (EP)
Designated contracting statesDE,   FR,   GB [1992/05]
TitleGerman:Flüssigkristallverbindung[1992/05]
English:Liquid crystal compound[1992/05]
French:Composé cristal liquide[1992/05]
Examination procedure17.06.1992Examination requested  [1992/34]
31.05.1994Despatch of communication of intention to grant (Approval: Yes)
18.08.1994Communication of intention to grant the patent
07.09.1994Fee for grant paid
07.09.1994Fee for publishing/printing paid
Opposition(s)23.11.1995No opposition filed within time limit [1996/07]
Fees paidRenewal fee
19.05.1993Renewal fee patent year 03
18.05.1994Renewal fee patent year 04
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Documents cited:Search[A]JP63307837  ;
 [Y]EP0350330
 [Y]  - MOLECULAR CRYSTALS AND LIQUID CRYSTALS INCORPORATING NONLINEAR OPTICS, vol. 174, Sepember 1989, pages 89-99, Gordon and Breach Science Publishers S.A., New York, US; G. GALLI et al.: "The mesomorphic behaviour of bisalkyl 4,4'-(terephthaloyldioxy)dibenzoates as models of thermotropic polyesters"
 [A]  - PATENT ABSTRACTS OF JAPAN, vol. 13, no. 151 (C-584)[3499], 12th April 1989, page 26 C 584; & JP-A-63 307 837 (DAICEL CHEM. IND. LTD) 15-12-1988, & JP63307837 A 00000000
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.