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Extract from the Register of European Patents

EP About this file: EP0564574

EP0564574 - DC-TO-DC CONVERTER USING COUPLED INDUCTOR CURRENT SENSING AND PREDETERMINED ON TIME [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  07.06.1996
Database last updated on 03.09.2024
Most recent event   Tooltip07.06.1996No opposition filed within time limitpublished on 24.07.1996 [1996/30]
Applicant(s)For all designated states
Eastman Kodak Company
343 State Street
Rochester, NY 14650-2201 / US
[N/P]
Former [1993/41]For all designated states
EASTMAN KODAK COMPANY
343 State Street
Rochester, New York 14650-2201 / US
Inventor(s)01 / LUDDEN, Christopher, Anthony c/o Eastman Kodak Co.
Patent Legal Staff 343 State Street
Rochester, New York 14650-2201 / US
02 / DUNSMORE, Clay, Allen c/o Eastman Kodak Co.
Patent Legal Staff 343 State Street
Rochester, New York 14650-2201 / US
[1993/41]
Representative(s)Schmidt, Peter
KODAK Aktiengesellschaft Patentabteilung
70323 Stuttgart / DE
[N/P]
Former [1993/41]Schmidt, Peter, Dipl.-Ing.
KODAK Aktiengesellschaft Patentabteilung
D-70323 Stuttgart / DE
Application number, filing date92903503.819.12.1991
[1993/41]
WO1991US09525
Priority number, dateUS1990063425226.12.1990         Original published format: US 634252
[1993/41]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9212568
Date:23.07.1992
Language:EN
[1992/19]
Type: A1 Application with search report 
No.:EP0564574
Date:13.10.1993
Language:EN
The application published by WIPO in one of the EPO official languages on 23.07.1992 takes the place of the publication of the European patent application.
[1993/41]
Type: B1 Patent specification 
No.:EP0564574
Date:02.08.1995
Language:EN
[1995/31]
Search report(s)International search report - published on:EP23.07.1992
ClassificationIPC:H02M3/335
[1993/41]
CPC:
H02M3/33507 (EP,US)
Designated contracting statesDE,   FR,   GB [1993/41]
TitleGerman:GLEICHSTROMWANDLER MIT ÜBERTRAGERSTROMERFASSUNG UND VORGEGEBENER EINSCHALTDAUER[1993/41]
English:DC-TO-DC CONVERTER USING COUPLED INDUCTOR CURRENT SENSING AND PREDETERMINED ON TIME[1993/41]
French:CONVERTISSEUR CONTINU-CONTINU UTILISANT UNE DETECTION DE COURANT PAR INDUCTEUR COUPLE ET UNE PERIODE DE FONCTIONNEMENT PREDETERMINEE[1993/41]
Entry into regional phase09.06.1993National basic fee paid 
09.06.1993Designation fee(s) paid 
09.06.1993Examination fee paid 
Examination procedure20.07.1992Request for preliminary examination filed
International Preliminary Examining Authority: FR
09.06.1993Examination requested  [1993/41]
23.09.1994Despatch of communication of intention to grant (Approval: Yes)
02.02.1995Communication of intention to grant the patent
29.04.1995Fee for grant paid
29.04.1995Fee for publishing/printing paid
Opposition(s)03.05.1996No opposition filed within time limit [1996/30]
Fees paidRenewal fee
18.12.1993Renewal fee patent year 03
22.12.1994Renewal fee patent year 04
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Cited inInternational search[Y]US3541420  (REES LYNN T);
 [A]WO8002778  (EASTMAN KODAK CO [US]);
 [A]US4336583  (CAMPBELL STEPHEN J, et al)
 [Y]  - PATENT ABSTRACTS OF JAPAN vol. 8, no. 135 (E-252)22 June 1984 & JP,59 044 973 ( HITACHI ) 13 March 1984
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.