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Extract from the Register of European Patents

EP About this file: EP0794691

EP0794691 - Method of and device for accurately detecting end of usage lifetime of a discharge lamp [Right-click to bookmark this link]
Former [1997/37]Device for accurately detecting end of usage lifetime of a discharge lamp
[2000/08]
StatusNo opposition filed within time limit
Status updated on  31.05.2002
Database last updated on 25.09.2024
Most recent event   Tooltip31.05.2002No opposition filed within time limitpublished on 17.07.2002  [2002/29]
Applicant(s)For all designated states
DENSO CORPORATION
1-1, Showa-cho, Kariya-City
Aichi-pref., 448 / JP
[N/P]
Former [1997/37]For all designated states
DENSO CORPORATION
1-1, Showa-cho
Kariya-City Aichi-Pref. 448 / JP
Inventor(s)01 / Toyama, Koichi
c/o DENSO CORPORATION, 1-1 Showa-cho
Kariya-shi, Aichi 448 / JP
02 / Kato, Koichi
c/o DENSO CORPORATION, 1-1 Showa-cho
Kariya-shi, Aichi 448 / JP
03 / Aida, Kenji
c/o DENSO CORPORATION, 1-1 Showa-cho
Kariya-shi, Aichi 448 / JP
[1997/37]
Representative(s)Vollnhals, Aurel, et al
TBK
Bavariaring 4-6
80336 München / DE
[N/P]
Former [1997/37]Vollnhals, Aurel, Dipl.-Ing., et al
Patentanwälte Tiedtke-Bühling-Kinne & Partner Bavariaring 4
80336 München / DE
Application number, filing date97103652.005.03.1997
[1997/37]
Priority number, dateJP1996004927206.03.1996         Original published format: JP 4927296
[1997/37]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0794691
Date:10.09.1997
Language:EN
[1997/37]
Type: A3 Search report 
No.:EP0794691
Date:03.06.1998
[1998/23]
Type: B1 Patent specification 
No.:EP0794691
Date:25.07.2001
Language:EN
[2001/30]
Search report(s)(Supplementary) European search report - dispatched on:EP20.04.1998
ClassificationIPC:H05B37/03, H05B41/292
[2001/30]
CPC:
H05B41/2925 (EP,US); H05B47/20 (EP,US); Y02B20/00 (EP,US)
Former IPC [1998/23]H05B37/03, H05B41/29
Former IPC [1997/37]H05B37/03
Designated contracting statesDE,   FR,   IT [1997/37]
TitleGerman:Verfahren und Anordnung zum genauen Detektieren des Lebensdauerendes einer Entladungslampe[2000/08]
English:Method of and device for accurately detecting end of usage lifetime of a discharge lamp[2000/08]
French:Procédé et dispositif pour détecter de manière fiable la fin de la durée de vie d'une lampe à décharge[2000/08]
Former [1997/37]Anordnung zum genauen Detektieren des Lebensdauerendes einer Entladungslampe
Former [1997/37]Device for accurately detecting end of usage lifetime of a discharge lamp
Former [1997/37]Dispositif pour détecter de manière fiable la fin de la durée de vie d'une lampe à décharge
Examination procedure13.07.1998Examination requested  [1998/37]
09.11.1998Despatch of a communication from the examining division (Time limit: M04)
02.03.1999Reply to a communication from the examining division
07.04.1999Despatch of a communication from the examining division (Time limit: M04)
13.08.1999Reply to a communication from the examining division
17.08.2000Despatch of communication of intention to grant (Approval: Yes)
17.01.2001Communication of intention to grant the patent
17.04.2001Fee for grant paid
17.04.2001Fee for publishing/printing paid
Opposition(s)26.04.2002No opposition filed within time limit [2002/29]
Fees paidRenewal fee
11.03.1999Renewal fee patent year 03
13.03.2000Renewal fee patent year 04
16.03.2001Renewal fee patent year 05
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Documents cited:Search[X]EP0642296  (SMI SYST MICROELECT INNOVAT [DE]) [X] 1-7 * column 1, line 41 - column 2, line 44; figure 1 *;
 [X]DE4331378  (KOITO MFG CO LTD [JP]) [X] 1-7 * column 5, line 53 - column 7, line 63; figures 1,2,7 *;
 [X]US4949018  (SIGLOCK JOHN V [US]) [X] 1-7 * column 3, line 37 - column 4, line 34; figures 1,2 *
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.