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Extract from the Register of European Patents

EP About this file: EP0262958

EP0262958 - Thyristor drive system [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  02.03.1996
Database last updated on 29.10.2024
Most recent event   Tooltip02.03.1996No opposition filed within time limitpublished on 17.04.1996 [1996/16]
Applicant(s)For all designated states
Kabushiki Kaisha Toshiba
72, Horikawa-cho, Saiwai-ku Kawasaki-shi
Kanagawa-ken 210-8572 / JP
[N/P]
Former [1988/14]For all designated states
KABUSHIKI KAISHA TOSHIBA
72, Horikawa-cho, Saiwai-ku
Kawasaki-shi, Kanagawa-ken 210, Tokyo / JP
Inventor(s)01 / Ogura, Tsuneo c/o Patent Division
Kabushiki Kaisha Toshiba 1-1 Shibaura 1-chome
Minato-ku Tokyo 105 / JP
02 / Takigami, Katsuhiko c/o Patent Division
Kabushiki Kaisha Toshiba 1-1 Shibaura 1-chome
Minato-ku Tokyo 105 / JP
03 / Nakagawa, Akio c/o Patent Division
Kabushiki Kaisha Toshiba 1-1 Shibaura 1-chome
Minato-ku Tokyo 105 / JP
04 / Domon, Tomokazu c/o Patent Division
Kabushiki Kaisha Toshiba 1-1 Shibaura 1-chome
Minato-ku Tokyo 105 / JP
[1988/14]
Representative(s)Freed, Arthur Woolf, et al
Marks & Clerk Incorporating Edward Evans Barker 90 Long Acre
London WC2E 9RA / GB
[N/P]
Former [1988/14]Freed, Arthur Woolf, et al
MARKS & CLERK, 57-60 Lincoln's Inn Fields
London WC2A 3LS / GB
Application number, filing date87308676.330.09.1987
[1988/14]
Priority number, dateJP1986023176930.09.1986         Original published format: JP 23176986
JP1987000394113.01.1987         Original published format: JP 394187
JP1987004131526.02.1987         Original published format: JP 4131587
JP1987004135926.02.1987         Original published format: JP 4135987
[1988/14]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0262958
Date:06.04.1988
Language:EN
[1988/14]
Type: A3 Search report 
No.:EP0262958
Date:06.12.1989
Language:EN
[1989/49]
Type: B1 Patent specification 
No.:EP0262958
Date:26.04.1995
Language:EN
[1995/17]
Search report(s)(Supplementary) European search report - dispatched on:EP16.10.1989
ClassificationIPC:H03K17/73, H01L29/74
[1995/17]
CPC:
H01L29/0834 (EP,US); H01L29/744 (EP,US); H03K17/732 (EP,US);
H03K2217/0036 (EP,US)
Former IPC [1988/14]H03K17/73, H01L29/743
Designated contracting statesCH,   DE,   LI,   SE [1988/14]
TitleGerman:Thyristortreibersystem[1988/14]
English:Thyristor drive system[1988/14]
French:Système de commande pour thyristor[1988/14]
Examination procedure09.02.1988Examination requested  [1988/15]
25.06.1990Despatch of a communication from the examining division (Time limit: M06)
24.12.1990Reply to a communication from the examining division
10.07.1991Despatch of a communication from the examining division (Time limit: M04)
14.11.1991Reply to a communication from the examining division
30.04.1992Despatch of a communication from the examining division (Time limit: M06)
04.11.1992Reply to a communication from the examining division
23.03.1993Date of oral proceedings
02.04.1993Despatch of a communication from the examining division (Time limit: M06)
02.04.1993Minutes of oral proceedings despatched
07.09.1993Reply to a communication from the examining division
02.11.1993Despatch of a communication from the examining division (Time limit: M06)
29.04.1994Reply to a communication from the examining division
21.06.1994Despatch of communication of intention to grant (Approval: Yes)
05.10.1994Communication of intention to grant the patent
13.01.1995Fee for grant paid
13.01.1995Fee for publishing/printing paid
Opposition(s)27.01.1996No opposition filed within time limit [1996/16]
Fees paidRenewal fee
11.09.1989Renewal fee patent year 03
21.09.1990Renewal fee patent year 04
09.09.1991Renewal fee patent year 05
15.09.1992Renewal fee patent year 06
16.09.1993Renewal fee patent year 07
08.09.1994Renewal fee patent year 08
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Lapses during opposition  TooltipCH26.04.1995
LI26.04.1995
SE26.07.1995
[1996/04]
Former [1995/44]CH26.04.1995
LI26.04.1995
Documents cited:Search[XP]JP61182261  ;
 [A]JP61047667  ;
 [AD]JP60247969  ;
 [A]EP0028797  (SIEMENS AG [DE]);
 [A]EP0103181  (SIEMENS AG [DE])
 [XP]  - PATENT ABSTRACTS OF JAPAN, vol. 11, no. 7 (E-469)(2454) 9 January 1987; & JP-A-61 182 261 (TOSHIBA CORP.) 14-08-1986 (Cat. X), & JP61182261 A 19870109
 [A]  - PATENT ABSTRACTS OF JAPAN, vol. 10, no. 205 (E-420)(2261) 17 July 1986; & JP-A-61 047 667 (TOYO ELECTRIC MFG CO. LTD.) 08-03-1986, & JP61047667 A 19860717
 [AD]  - PATENT ABSTRACTS OF JAPAN, vol. 10, no. 113 (E-399)(2170) 26 April 1986; & JP-A-60 247 969 (TOYO DENKI SEIZO K.K.) 07-12-1985, & JP60247969 A 19860426
 [AP]  - I.E.E.E. TRANSACTIONS ON ELECTRON DEVICES, vol. ED-34, no. 6, June 1987, pages 1396-1406, New York, US; J.-I. NISHIZAWA et al.: "A Double-Gate-Type Static-Induction Thyristor".
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.