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Extract from the Register of European Patents

EP About this file: EP0492375

EP0492375 - Voltage/current characteristics control circuit particularly for protecting power transistors [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  26.07.1996
Database last updated on 22.08.2024
Most recent event   Tooltip24.01.2003Change - lapse in a contracting state
Updated state(s): NL
published on 12.03.2003  [2003/11]
Applicant(s)For all designated states
STMicroelectronics Srl
Via C. Olivetti, 2
20041 Agrate Brianza (Milano) / IT
[N/P]
Former [1992/27]For all designated states
SGS-THOMSON MICROELECTRONICS S.r.l.
Via C. Olivetti, 2
I-20041 Agrate Brianza (Milano) / IT
Inventor(s)01 / Brambilla, Davide
Via Gran Sasso 9
I-20017 Rho (Milano) / IT
02 / Botti, Edoardo
Via Battù 16/D
I-27029 Vigevano (Pavia) / IT
[1992/27]
Representative(s)Modiano, Guido, et al
Dr. Modiano & Associati SpA Via Meravigli, 16
20123 Milano / IT
[N/P]
Former [1992/27]Modiano, Guido, Dr.-Ing., et al
Modiano & Associati S.r.l. Via Meravigli, 16
I-20123 Milano / IT
Application number, filing date91121651.317.12.1991
[1992/27]
Priority number, dateIT1990002244820.12.1990         Original published format: IT 2244890
[1992/27]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0492375
Date:01.07.1992
Language:EN
[1992/27]
Type: B1 Patent specification 
No.:EP0492375
Date:20.09.1995
Language:EN
[1995/38]
Search report(s)(Supplementary) European search report - dispatched on:EP13.03.1992
ClassificationIPC:H02H7/20
[1992/27]
CPC:
H03K17/04113 (EP,US); H02H9/00 (KR); H03K17/0826 (EP,US)
Designated contracting statesDE,   FR,   GB,   NL,   SE [1992/27]
TitleGerman:Spannungs-/Strom-Charakteristik-Kontrollschaltung, insbesondere zum Schuzt von Leistungstransistoren[1992/27]
English:Voltage/current characteristics control circuit particularly for protecting power transistors[1992/27]
French:Cicuit protecteur contre les surtensions - et les surintensités de courant notamment pour des transistors de puissance[1992/27]
Examination procedure23.09.1992Examination requested  [1992/48]
08.12.1994Despatch of communication of intention to grant (Approval: Yes)
21.03.1995Communication of intention to grant the patent
19.06.1995Fee for grant paid
19.06.1995Fee for publishing/printing paid
Opposition(s)21.06.1996No opposition filed within time limit [1996/37]
Fees paidRenewal fee
18.12.1993Renewal fee patent year 03
19.11.1994Renewal fee patent year 04
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Lapses during opposition  TooltipNL20.09.1995
SE20.12.1995
[2003/11]
Former [2000/27]SE20.12.1995
NL31.12.1995
Former [1996/23]SE20.12.1995
Documents cited:Search[A]DE3003123  (RCA CORP);
 [A]DE3125198  (RCA CORP [US]);
 [A]DE3240649  (MARCHAL EQUIP AUTO [FR]);
 [A]DE3202319  (SIEMENS AG [DE]);
 [A]US4680664  (LEUTHEN JOHN M [US]);
 [A]US4789842  (NAXERA JIRI [US]);
 [A]US4918563  (KANAI YASUNORI [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.