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Extract from the Register of European Patents

EP About this file: EP0169938

EP0169938 - Semiconductor memory device having trenched capacitor [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  24.01.1990
Database last updated on 06.11.2024
Most recent event   Tooltip24.01.1990No opposition filed within time limitpublished on 14.03.1990 [1990/11]
Applicant(s)For all designated states
Kabushiki Kaisha Toshiba
72, Horikawa-cho, Saiwai-ku Kawasaki-shi
Kanagawa-ken 210-8572 / JP
[N/P]
Former [1986/06]For all designated states
KABUSHIKI KAISHA TOSHIBA
72, Horikawa-cho, Saiwai-ku
Kawasaki-shi, Kanagawa-ken 210, Tokyo / JP
Inventor(s)01 / Uchida, Yukimasa c/o Patent Division
Kabushiki Kaisha Toshiba 1-1 Shibaura 1-chome
Minato-ku Tokyo 105 / JP
[1986/06]
Representative(s)Lehn, Werner, et al
Hoffmann Eitle, Patent- und Rechtsanwälte, Postfach 81 04 20
81904 München / DE
[N/P]
Former [1986/06]Lehn, Werner, Dipl.-Ing., et al
Hoffmann, Eitle & Partner, Patentanwälte, Postfach 81 04 20
D-81904 München / DE
Application number, filing date84115474.314.12.1984
[1986/06]
Priority number, dateJP1983023685015.12.1983         Original published format: JP 23685083
JP1983023685115.12.1983         Original published format: JP 23685183
JP1984000795820.01.1984         Original published format: JP 795884
[1986/06]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0169938
Date:05.02.1986
Language:EN
[1986/06]
Type: B1 Patent specification 
No.:EP0169938
Date:29.03.1989
Language:EN
[1989/13]
Search report(s)(Supplementary) European search report - dispatched on:EP14.11.1985
ClassificationIPC:H01L27/10
[1986/06]
CPC:
H10B12/37 (EP,US)
Designated contracting statesDE,   FR,   GB [1986/06]
TitleGerman:Halbleiterspeichervorrichtung mit einem in einer Rille angeordneten Kondensator[1986/06]
English:Semiconductor memory device having trenched capacitor[1986/06]
French:Dispositif de mémoire semi-conducteur comportant un condensateur dans un sillon[1986/06]
Examination procedure14.12.1984Examination requested  [1986/06]
07.08.1987Despatch of a communication from the examining division (Time limit: M06)
09.02.1988Reply to a communication from the examining division
06.07.1988Despatch of communication of intention to grant (Approval: Yes)
27.09.1988Communication of intention to grant the patent
13.12.1988Fee for grant paid
13.12.1988Fee for publishing/printing paid
Opposition(s)30.12.1989No opposition filed within time limit [1990/11]
Fees paidRenewal fee
16.12.1986Renewal fee patent year 03
09.12.1987Renewal fee patent year 04
16.12.1988Renewal fee patent year 05
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Documents cited:Search[A]US4151610  (OCHII KIYOFUMI [JP], et al);
 [A]EP0018764  (FUJITSU LTD [JP]);
 [A]WO8103241  (WESTERN ELECTRIC CO [US]);
 [X]EP0085988  (HITACHI LTD [JP])
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.