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Extract from the Register of European Patents

EP About this file: EP0534189

EP0534189 - Method for producing polycarbonate [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  16.10.1998
Database last updated on 22.08.2024
Most recent event   Tooltip16.10.1998No opposition filed within time limitpublished on 02.12.1998 [1998/49]
Applicant(s)For all designated states
MITSUBISHI CHEMICAL CORPORATION
1000, Kamoshida Oaba
Yokohama 227 / JP
[N/P]
Former [1995/39]For all designated states
MITSUBISHI CHEMICAL CORPORATION
5-2, Marunouchi 2-chome
Chiyoda-ku, Tokyo / JP
Former [1993/13]For all designated states
MITSUBISHI PETROCHEMICAL CO., LTD.
5-2, 2-chome, Marunouchi
Chiyoda-ku Tokyo 100 / JP
Inventor(s)01 / Yokoyama, Masuzo, c/o Mitsubishi Petroch. Co. Ltd.
Yokkaichi Res. Center, 1, Toho-cho
Yokkaichi, Mie / JP
02 / Takano, Junji, c/o Mitsubishi Petroch. Co. Ltd.
Yokkaichi Res. Center, 1, Toho-cho
Yokkaichi, Mie / JP
03 / Takakura, Kazuhide c/o Mitsubishi Petroch. Co.Ltd.
Yokkaichi Res. Center, 1, Toho-cho
Yokkaichi, Mie / JP
[1993/13]
Representative(s)Hansen, Bernd, et al
Hoffmann Eitle Patent- und Rechtsanwälte Postfach 81 04 20
81904 München / DE
[N/P]
Former [1993/13]Hansen, Bernd, Dr. Dipl.-Chem., et al
Hoffmann, Eitle & Partner Patent- und Rechtsanwälte, Postfach 81 04 20
D-81904 München / DE
Application number, filing date92115062.903.09.1992
[1993/13]
Priority number, dateJP1991024367324.09.1991         Original published format: JP 24367391
[1993/13]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0534189
Date:31.03.1993
Language:EN
[1993/13]
Type: B1 Patent specification 
No.:EP0534189
Date:10.12.1997
Language:EN
[1997/50]
Search report(s)(Supplementary) European search report - dispatched on:EP25.01.1993
ClassificationIPC:C08G64/30
[1993/13]
CPC:
C08G64/307 (EP,US)
Designated contracting statesDE,   GB,   NL [1993/13]
TitleGerman:Verfahren zur Herstellung von Polycarbonaten[1993/13]
English:Method for producing polycarbonate[1993/13]
French:Procédé de préparation de polycarbonates[1993/13]
Examination procedure24.02.1993Examination requested  [1993/16]
24.08.1995Despatch of a communication from the examining division (Time limit: M04)
29.12.1995Reply to a communication from the examining division
10.12.1996Despatch of communication of intention to grant (Approval: Yes)
21.02.1997Communication of intention to grant the patent
21.05.1997Fee for grant paid
21.05.1997Fee for publishing/printing paid
Opposition(s)11.09.1998No opposition filed within time limit [1998/49]
Fees paidRenewal fee
28.09.1994Renewal fee patent year 03
29.09.1995Renewal fee patent year 04
30.09.1996Renewal fee patent year 05
26.09.1997Renewal fee patent year 06
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Documents cited:Search[AP]JP4001229  ;
 [AP]JP4001227  ;
 JP3265625  [ ]
 [AP]  - PATENT ABSTRACTS OF JAPAN vol. 16, no. 140 (C-926)(5183) 8 April 1992 & JP-A-4 001 229 ( DAICEL CHEM IND LTD ) 6 January 1992, & JP4001229 A 19920106
 [AP]  - PATENT ABSTRACTS OF JAPAN vol. 16, no. 140 (C-926)(5183) 8 April 1992 & JP-A-4 001 227 ( DAICEL CHEM IND LTD ) 6 January 1992, & JP4001227 A 19920106
    [ ] - PATENT ABSTRACTS OF JAPAN vol. 16, no. 71 (C-913)(5114) 21 February 1992 & JP-A-3 265 625 ( DAICEL CHEM IND LTD ) 26 November 1991, & JP3265625 A 19911126
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.