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Extract from the Register of European Patents

EP About this file: EP0434183

EP0434183 - Nitriding furnace [Right-click to bookmark this link]
StatusPatent revoked
Status updated on  09.10.1998
Database last updated on 17.05.2024
Most recent event   Tooltip17.04.2015Change - lapse in a contracting state
State(s) deleted from list of lapses: CH, LI
published on 20.05.2015  [2015/21]
Applicant(s)For all designated states
DAIDOUSANSO CO., LTD.
20-16, Higashishinsaibashi 1-chome, Chuo-ku Osaka-shi
Osaka 542 / JP
[N/P]
Former [1991/26]For all designated states
DAIDOUSANSO CO., LTD.
20-16, Higashishinsaibashi 1-chome, Chuo-ku
Osaka-shi, Osaka 542 / JP
Inventor(s)01 / Tahara, Masaki
35-4, Miyanokawahara 5-chome
Takatsuki-shi, Osaka 569 / JP
02 / Kitano, Kenzo
1498-1, Oyamadacho
Kawachinagano-shi, Osaka 586 / JP
03 / Senbokuya, Haruo
3-306-404, Fujisawadai 1-chome
Tondabayashi-shi, Osaka 584 / JP
04 / Minato, Teruo
38-2, Shiroyamadai 3-chome
Hashimoto-shi, Wakayama 648 / JP
[1991/26]
Representative(s)Marlow, Nicholas Simon, et al
Reddie & Grose LLP The White Chapel Building
10 Whitechapel High Street
London E1 8QS / GB
[N/P]
Former [1991/26]Marlow, Nicholas Simon, et al
Reddie & Grose 16, Theobalds Road
London WC1X 8PL / GB
Application number, filing date90308460.601.08.1990
[1991/26]
Priority number, dateJP1989033342522.12.1989         Original published format: JP 33342589
[1991/26]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0434183
Date:26.06.1991
Language:EN
[1991/26]
Type: A3 Search report 
No.:EP0434183
Date:14.08.1991
Language:EN
[1991/33]
Type: B1 Patent specification 
No.:EP0434183
Date:25.01.1995
Language:EN
[1995/04]
Search report(s)(Supplementary) European search report - dispatched on:EP27.06.1991
ClassificationIPC:C23C8/26, C21D1/74, C21D1/767
[1991/26]
CPC:
C21D1/74 (EP,US); C23C8/26 (EP,KR,US); C21D1/767 (EP,US)
Designated contracting statesCH,   DE,   FR,   GB,   LI,   NL,   SE [1991/26]
TitleGerman:Nitrierofen[1995/04]
English:Nitriding furnace[1991/26]
French:Four de nitrification[1991/26]
Former [1991/26]Niteierofen
Examination procedure08.01.1992Examination requested  [1992/11]
02.03.1993Despatch of a communication from the examining division (Time limit: M06)
02.09.1993Reply to a communication from the examining division
23.12.1993Despatch of a communication from the examining division (Time limit: M02)
25.02.1994Reply to a communication from the examining division
22.03.1994Despatch of communication of intention to grant (Approval: Yes)
01.08.1994Communication of intention to grant the patent
01.11.1994Fee for grant paid
01.11.1994Fee for publishing/printing paid
Opposition(s)Opponent(s)01  20.10.1995  13.11.1995  ADMISSIBLE
Ipsen International GmbH
Flutstrasse 78
47533 Kleve / DE
Opponent's representative
Brinkmann & Partner
Patentanwälte
Partnerschaft mbB
Am Seestern 8
40547 Düsseldorf / DE
 [N/P]
Former [1997/35]
Opponent(s)01  20.10.1995  13.11.1995  ADMISSIBLE
Ipsen International GmbH
Flutstrasse 78
47533 Kleve / DE
Opponent's representative
Stenger, Watzke & Ring Patentanwälte
Kaiser-Friedrich-Ring 70
D-40547 Düsseldorf / DE
Former [1995/50]
Opponent(s)01  20.10.1995  13.11.1995  ADMISSIBLE
Ipsen Industries International GmbH
Flurstrasse 78
D-47533 Kleve / DE
Opponent's representative
Stenger, Watzke & Ring Patentanwälte
Kaiser-Friedrich-Ring 70
D-40547 Düsseldorf / DE
06.12.1995Invitation to proprietor to file observations on the notice of opposition
07.06.1996Reply of patent proprietor to notice(s) of opposition
21.02.1997Despatch of a communication from the opposition division (Time limit: M06)
20.08.1997Reply to a communication from the opposition division
24.06.1998Date of oral proceedings
01.07.1998Despatch of minutes of oral proceedings
01.07.1998Despatch of communication that the patent will be revoked
11.07.1998Legal effect of revocation of patent [1998/48]
Fees paidRenewal fee
25.08.1992Renewal fee patent year 03
23.08.1993Renewal fee patent year 04
31.08.1994Renewal fee patent year 05
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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.
Lapses during opposition  Tooltipdeleted
[2015/21]
Former [2000/52]CH25.01.1995
LI25.01.1995
Documents cited:Search[A]US2205258  (HANSEN ELMER K);
 [A]US4016011  (ASAI TAKEJI, et al);
 [A]US4183773  (CHIBA IWANE [JP], et al)
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.