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

2022.02.11

More...
blank News flashes

News Flashes

New version of the European Patent Register – SPC proceedings information in the Unitary Patent Register.

2024-07-24

More...
blank Related links

Extract from the Register of European Patents

EP About this file: EP0121798

EP0121798 - Dynamic type semiconductor memory device [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  28.12.1991
Database last updated on 05.10.2024
Most recent event   Tooltip28.12.1991No opposition filed within time limitpublished on 19.02.1992 [1992/08]
Applicant(s)For all designated states
Kabushiki Kaisha Toshiba
72, Horikawa-cho, Saiwai-ku Kawasaki-shi
Kanagawa-ken 210-8572 / JP
[N/P]
Former [1984/42]For all designated states
KABUSHIKI KAISHA TOSHIBA
72, Horikawa-cho, Saiwai-ku
Kawasaki-shi, Kanagawa-ken 210, Tokyo / JP
Inventor(s)01 / Furuyama, Tohru
100 Fairview Square Apart., 3-G
Ithaca, N.Y. 14850 / US
02 / Uchida, Yukimasa
15-1524, Maeda-Heights 511-2, Maeda-cho
Totsuka-ku Yokohama-shi / JP
[1984/42]
Representative(s)Lehn, Werner, et al
Hoffmann Eitle, Patent- und Rechtsanwälte, Postfach 81 04 20
81904 München / DE
[N/P]
Former [1984/42]Lehn, Werner, Dipl.-Ing., et al
Hoffmann, Eitle & Partner, Patentanwälte, Postfach 81 04 20
D-81904 München / DE
Application number, filing date84102612.309.03.1984
[1984/42]
Priority number, dateJP1983003955010.03.1983         Original published format: JP 3955083
[1984/42]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0121798
Date:17.10.1984
Language:EN
[1984/42]
Type: A3 Search report 
No.:EP0121798
Date:23.03.1988
Language:EN
[1988/12]
Type: B1 Patent specification 
No.:EP0121798
Date:27.02.1991
Language:EN
[1991/09]
Search report(s)(Supplementary) European search report - dispatched on:EP03.02.1988
ClassificationIPC:G11C11/407, G11C5/00
[1991/09]
CPC:
G11C11/4074 (EP,US); G11C11/4087 (EP,US)
Former IPC [1984/42]G11C11/24, G11C5/00
Designated contracting statesDE,   FR,   GB [1984/42]
TitleGerman:Dynamische Halbleiterspeicheranordnung[1984/42]
English:Dynamic type semiconductor memory device[1984/42]
French:Dispositif de mémoire dynamique à semi-conducteur[1984/42]
Examination procedure09.03.1984Examination requested  [1984/42]
31.08.1989Despatch of a communication from the examining division (Time limit: M06)
05.03.1990Reply to a communication from the examining division
24.04.1990Despatch of communication of intention to grant (Approval: Yes)
22.08.1990Communication of intention to grant the patent
06.11.1990Fee for grant paid
06.11.1990Fee for publishing/printing paid
Opposition(s)28.11.1991No opposition filed within time limit [1992/08]
Fees paidRenewal fee
15.03.1986Renewal fee patent year 03
09.03.1987Renewal fee patent year 04
07.03.1988Renewal fee patent year 05
13.03.1989Renewal fee patent year 06
15.03.1990Renewal fee patent year 07
17.12.1990Renewal fee patent year 08
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[A]US4151610  (OCHII KIYOFUMI [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.