blank Quick help
blank Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability
Register Forum

2022.02.11

More...
blank News flashes

News flashes

New version of the European Patent Register - SPC information for Unitary Patents.

2024-03-06

More...
blank Related links

Extract from the Register of European Patents

EP About this file: EP0495452

EP0495452 - Field effect transistor [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  26.07.1996
Database last updated on 22.05.2024
Most recent event   Tooltip26.07.1996Withdrawal of applicationpublished on 11.09.1996 [1996/37]
Applicant(s)For all designated states
Sumitomo Electric Industries, Ltd.
5-33, Kitahama 4-chome, Chuo-ku
Osaka 541 / JP
[1992/30]
Inventor(s)01 / Nakajima, Shigeru, c/o Yokohama Works of
Sumitomo Electric Industries, Ltd., 1, Taya-cho
Sakae-ku, Yokohama-shi, Kanagawa / JP
[1992/30]
Representative(s)Kahler, Kurt, et al
Patentanwälte Kahler, Käck, Fiener Vorderer Anger 239
86899 Landsberg/Lech / DE
[N/P]
Former [1992/45]Kahler, Kurt, Dipl.-Ing., et al
Patentanwälte Kahler, Käck, Fiener & Sturm P.O. Box 12 49
D-87712 Mindelheim / DE
Former [1992/30]Kahler, Kurt, Dipl.-Ing. Patentanwälte Kahler, Käck & Fiener
Maximilianstrasse 57 Postfach 12 49
W-8948 Mindelheim / DE
Application number, filing date92100502.114.01.1992
[1992/30]
Priority number, dateJP1991000278914.01.1991         Original published format: JP 278991
JP1991000279014.01.1991         Original published format: JP 279091
JP1991000279114.01.1991         Original published format: JP 279191
JP1991000279214.01.1991         Original published format: JP 279291
[1992/30]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0495452
Date:22.07.1992
Language:EN
[1992/30]
Type: A3 Search report 
No.:EP0495452
Date:28.04.1993
Language:EN
[1993/17]
Search report(s)(Supplementary) European search report - dispatched on:EP12.03.1993
ClassificationIPC:H01L29/76
[1992/30]
CPC:
H01L29/8128 (EP,US); H01L29/812 (KR)
Designated contracting statesDE,   DK,   FR,   GB,   IT [1992/30]
TitleGerman:Feldeffekt-Transistor[1992/30]
English:Field effect transistor[1992/30]
French:Transistor à effet de champ[1992/30]
File destroyed:20.04.2002
Examination procedure28.10.1993Examination requested  [1993/52]
23.11.1994Despatch of a communication from the examining division (Time limit: M06)
06.06.1995Reply to a communication from the examining division
02.02.1996Despatch of a communication from the examining division (Time limit: M04)
10.07.1996Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time
17.07.1996Application withdrawn by applicant  [1996/37]
Fees paidRenewal fee
28.01.1994Renewal fee patent year 03
31.01.1995Renewal fee patent year 04
31.01.1996Renewal fee patent year 05
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court
See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:Search[X]EP0214047  (FUJITSU LTD [JP]);
 [E]US5091759  (SHIH HUNG-DAH [US], et al)
 [X]  - INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES vol. 10, no. 10, October 1989, NEW YORK US pages 1181 - 1191 A.R.JHA 'Parametric analysis of GaInAs devices for mm-wave applications'
 [Y]  - PROC. 11TH GAAS IC SYMPOSIUM, IEEE, SAN DIEGO, CA, US, 22-25 OCTOBER 1989 pages 129 - 132 Y.SUZUKI ET AL. 'A 10-Gbit/s laser driver IC with i-AlGaAs/n-GaAs doped-channel hetero-MISFETs (DMTs)'
 [A]  - IEEE ELECTRON DEVICE LETTERS. vol. 9, no. 11, November 1988, NEW YORK US pages 610 - 612 B.KIM ET AL. 'AlGaAs/InGaAs/GaAs quantum-well power MISFET at millimeter-wave frequencies'
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.