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Extract from the Register of European Patents

EP About this file: EP0675545

EP0675545 - Insulated gate thyristor [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  07.08.1998
Database last updated on 02.09.2024
Most recent event   Tooltip07.08.1998No opposition filed within time limitpublished on 23.09.1998 [1998/39]
Applicant(s)For all designated states
FUJI ELECTRIC CO. LTD.
1-1, Tanabeshinden, Kawasaki-ku
Kawasaki 210 / JP
[1995/40]
Inventor(s)01 / Iwamuro, Noriyuki
c/o Fuji Electric Co., Ltd., 1-1 Tanabeshinden
Kawasaki-ku, Kawasaki 210 / JP
[1995/40]
Representative(s)MERH-IP Matias Erny Reichl Hoffmann Patentanwälte PartG mbB
Paul-Heyse-Strasse 29
80336 München / DE
[N/P]
Former [1995/40]Hoffmann, Eckart, Dipl.-Ing.
Patentanwalt, Bahnhofstrasse 103
D-82166 Gräfelfing / DE
Application number, filing date95104741.430.03.1995
[1995/40]
Priority number, dateJP1994006429301.04.1994         Original published format: JP 6429394
JP1994013676620.06.1994         Original published format: JP 13676694
JP1995000534818.01.1995         Original published format: JP 534895
[1995/40]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0675545
Date:04.10.1995
Language:EN
[1995/40]
Type: A3 Search report 
No.:EP0675545
Date:10.07.1996
[1996/28]
Type: B1 Patent specification 
No.:EP0675545
Date:01.10.1997
Language:EN
[1997/40]
Search report(s)(Supplementary) European search report - dispatched on:EP22.05.1996
ClassificationIPC:H01L29/745, H01L29/74, H01L29/749
[1996/27]
CPC:
H01L29/749 (EP,US); H01L29/7408 (EP,US); H01L29/7455 (EP,US)
Former IPC [1995/40]H01L29/745
Designated contracting statesDE,   FR,   GB [1995/40]
TitleGerman:Thyristor mit isoliertem Gate[1995/40]
English:Insulated gate thyristor[1995/40]
French:Thyristor à grille isolée[1995/40]
Examination procedure05.07.1996Examination requested  [1996/36]
25.02.1997Despatch of communication of intention to grant (Approval: Yes)
08.04.1997Communication of intention to grant the patent
10.07.1997Fee for grant paid
10.07.1997Fee for publishing/printing paid
Opposition(s)02.07.1998No opposition filed within time limit [1998/39]
Fees paidRenewal fee
26.03.1997Renewal fee patent year 03
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Documents cited:Search[A]JPH06380572  ;
 [A]DE3902300  (TOSHIBA KAWASAKI KK [JP]) [A] 1-6 * abstract *;
 [A]EP0389862  (SIEMENS AG [DE]) [A] 1-6 * column A; figure - *;
 [A]  - M.S.SHEKAR ET AL., "An Emitter Switched Thyristor with Base resistance Control", IEEE ELECTRON DEVICE LETTERS, NEW YORK US, (199306), vol. 14, no. 6, pages 280 - 282, XP000417077 [A] 1-6 * abstract *

DOI:   http://dx.doi.org/10.1109/55.215198
 [A]  - PATENT ABSTRACTS OF JAPAN, (19880825), vol. 12, no. 314, Database accession no. (E - 649), & JP6380572 A 19880411 (FUJI ELECTRIC CO LTD) [A] 1-6 * abstract *
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.