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Extract from the Register of European Patents

EP About this file: EP0423720

EP0423720 - Process for producing toner [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  03.01.1997
Database last updated on 15.06.2024
Most recent event   Tooltip03.01.1997No opposition filed within time limitpublished on 19.02.1997 [1997/08]
Applicant(s)For all designated states
Nippon Paint Co., Ltd.
2-1-2, Oyodokita Kita-ku Osaka-shi
Osaka 530 / JP
Former [1991/17]For all designated states
2-1-2, Oyodokita Kita-ku
Osaka-shi Osaka 530 / JP
Inventor(s)01 / Yabuuchi, Naoya
701, 4-1-1, Nishimakino
Hirakata-shi, Osaka-fu / JP
02 / Maruta, Masayuki
36-5, Kunimatsu-cho
Nayagawa-shi, Osaka-fu / JP
03 / Otsuka, Chikayuki
Kadoma-shi, Osaka-fu / JP
04 / Kanakura, Akihiro
25-22-405, Shakusonji-cho
Hirakata-shi, Osaka-fu / JP
05 / Kashihara, Akio
3-24-12, Yamanoue
Hirakata-shi, Osaka-fu / JP
Representative(s)Hansen, Bernd, et al
Hoffmann Eitle Patent- und Rechtsanwälte Postfach 81 04 20
81904 München / DE
Former [1991/17]Hansen, Bernd, Dr. Dipl.-Chem., et al
Hoffmann, Eitle & Partner Patent- und Rechtsanwälte, Postfach 81 04 20
D-81904 München / DE
Application number, filing date90119833.316.10.1990
Priority number, dateJP1989027001916.10.1989         Original published format: JP 27001989
JP1989027002016.10.1989         Original published format: JP 27002089
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
Type: A3 Search report 
Type: B1 Patent specification 
Search report(s)(Supplementary) European search report - dispatched on:EP10.07.1991
ClassificationIPC:G03G9/08, G03G9/087
G03G9/08702 (EP,US); G03G9/0806 (EP,US)
Designated contracting statesDE,   FR,   GB [1991/17]
TitleGerman:Verfahren zur Herstellung von Tonern[1991/17]
English:Process for producing toner[1991/17]
French:Procédé de préparation de toneur[1991/17]
Examination procedure23.12.1991Examination requested  [1992/09]
12.08.1994Despatch of a communication from the examining division (Time limit: M06)
10.02.1995Reply to a communication from the examining division
13.04.1995Despatch of communication of intention to grant (Approval: Yes)
18.08.1995Communication of intention to grant the patent
20.10.1995Fee for grant paid
20.10.1995Fee for publishing/printing paid
Opposition(s)22.11.1996No opposition filed within time limit [1997/08]
Fees paidRenewal fee
30.10.1992Renewal fee patent year 03
29.10.1993Renewal fee patent year 04
27.10.1994Renewal fee patent year 05
30.10.1995Renewal fee patent year 06
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Documents cited:Search[A]JP0180434  ;
 [A]JP60230663  ;
 [A]US4789617  (ARAHARA KOZO [JP], et al);
 [A]EP0246814  (CANON KK [JP]);
 [A]US3104068  (PAOLO CASTELLI, et al)
 [A]  - PATENT ABSTRACTS OF JAPAN vol. 13, no. 286 (C-613)() 29 June 1989, & JP-A-01 80434 (NIPPON PAINT CO. LTD.) 27 March 1989,, & JP0180434 A 19890327
 [A]  - PATENT ABSTRACTS OF JAPAN vol. 10, no. 97 (P-446)(2154) 15 April 1986, & JP-A-60 230663 (KONISHIROKU SHASHIN KOGYO K. K.) 16 November 1985,, & JP60230663 A 19851116
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.