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Extract from the Register of European Patents

EP About this file: EP0255326

EP0255326 - Current mode control arrangement with load dependent ramp signal added to sensed current waveform [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  21.06.1990
Database last updated on 04.11.2024
Most recent event   Tooltip07.07.2007Change - inventorpublished on 08.08.2007  [2007/32]
Applicant(s)For all designated states
AT&T Corp.
32 Avenue of the Americas
New York, NY 10013-2412 / US
[1988/05]
Inventor(s)01 / Murdock, James Harold
50 Claude Avenue
Denville New Jersey 07834 / US
[1988/05]
Representative(s)Buckley, Christopher Simon Thirsk, et al
Lucent Technologies Inc., 5 Mornington Road Woodford Green
Essex IG8 0TU / GB
[N/P]
Former [1988/05]Buckley, Christopher Simon Thirsk, et al
AT&T (UK) Ltd. 5 Mornington Road
Woodford Green Essex IG8 0TU / GB
Application number, filing date87306631.028.07.1987
[1988/05]
Priority number, dateUS1986089044030.07.1986         Original published format: US 890440
[1988/05]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0255326
Date:03.02.1988
Language:EN
[1988/05]
Type: A3 Search report 
No.:EP0255326
Date:02.11.1988
Language:EN
[1988/44]
Search report(s)(Supplementary) European search report - dispatched on:EP13.09.1988
ClassificationIPC:H02M3/335
[1988/05]
CPC:
H02M3/33546 (EP,US)
Designated contracting statesDE,   GB,   IT [1988/05]
TitleGerman:Stromartsteuereinrichtung mit lastabhängigem, der gemessenen Stromwellenform zugefügtem Rampensignal[1988/05]
English:Current mode control arrangement with load dependent ramp signal added to sensed current waveform[1988/05]
French:Dispositif de commande en mode de courant avec signal de perte dépendant de la charge ajoutée à la forme d'onde du courant mesuré[1988/05]
File destroyed:26.06.1996
Examination procedure24.04.1989Examination requested  [1989/27]
26.09.1989Despatch of a communication from the examining division (Time limit: M04)
07.02.1990Application deemed to be withdrawn, date of legal effect  [1990/32]
08.03.1990Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time  [1990/32]
Fees paidRenewal fee
19.07.1989Renewal fee patent year 03
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Documents cited:Search[A]EP0068970  (INF MILIT SPATIALE AERONAUT [FR]);
 [A]FR2456970  (LICENTIA GMBH [DE]);
 [A]DE3110075  (SIEMENS AG [DE])
 [A]  - THE RADIO AND ELECTRONIC ENGINEER, vol. 54, no. 10, October 1984, pages 395-405, IERE, London, GB; M. GOODMAN et al.: "Current mode control of switching regulators"
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.