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Extract from the Register of European Patents

EP About this file: EP0455977

EP0455977 - Semiconductor memory device having diagnostic unit operable on parallel data bits [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  07.11.1997
Database last updated on 03.09.2024
Most recent event   Tooltip07.11.1997No opposition filed within time limitpublished on 29.12.1997 [1997/52]
Applicant(s)For all designated states
NEC Corporation
7-1, Shiba 5-chome Minato-ku
Tokyo 108-8001 / JP
[N/P]
Former [1991/46]For all designated states
NEC CORPORATION
7-1, Shiba 5-chome Minato-ku
Tokyo / JP
Inventor(s)01 / Nakada, Kazuhiro
c/o NEC Corporation, 7-1, Shiba 5-chome
Minato-ku, Tokyo / JP
[1991/46]
Representative(s)Glawe, Delfs, Moll
Partnerschaft mbB von
Patent- und Rechtsanwälten
Postfach 26 01 62
80058 München / DE
[N/P]
Former [1994/35]Glawe, Delfs, Moll & Partner
Patentanwälte Postfach 26 01 62
D-80058 München / DE
Former [1991/46]Glawe, Delfs, Moll & Partner
Patentanwälte Postfach 26 01 62
D-80058 München / DE
Application number, filing date91104684.525.03.1991
[1991/46]
Priority number, dateJP1990008400630.03.1990         Original published format: JP 8400690
[1991/46]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0455977
Date:13.11.1991
Language:EN
[1991/46]
Type: A3 Search report 
No.:EP0455977
Date:08.02.1995
Language:EN
[1995/06]
Type: B1 Patent specification 
No.:EP0455977
Date:02.01.1997
Language:EN
[1997/01]
Search report(s)(Supplementary) European search report - dispatched on:EP22.12.1994
ClassificationIPC:G11C29/00
[1997/01]
CPC:
G11C29/34 (EP,US)
Former IPC [1991/46]G11C29/00, G11C11/34
Designated contracting statesDE,   FR,   GB [1991/46]
TitleGerman:Halbleiter-Speichereinrichtung mit auf parallelen Daten-Bits anwendbarer diagnostischer Einheit[1991/46]
English:Semiconductor memory device having diagnostic unit operable on parallel data bits[1991/46]
French:Dispositif de mémoire à semi-conducteurs avec unité diagnostique applicable à data-bits en parallèle[1991/46]
Examination procedure25.03.1991Examination requested  [1991/46]
29.02.1996Despatch of communication of intention to grant (Approval: Yes)
08.07.1996Communication of intention to grant the patent
27.09.1996Fee for grant paid
27.09.1996Fee for publishing/printing paid
Opposition(s)03.10.1997No opposition filed within time limit [1997/52]
Fees paidRenewal fee
19.03.1993Renewal fee patent year 03
21.03.1994Renewal fee patent year 04
17.03.1995Renewal fee patent year 05
15.03.1996Renewal fee patent year 06
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Documents cited:Search[PA]EP0410464  (NEC CORP [JP]) [PA] 1;
 [PA]EP0385704  (NEC CORP [JP]) [PA] 1;
 [A]EP0026602  (COMMUNICATIONS SATELLITE CORP [US]) [A] 1
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.