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: EP0645774

EP0645774 - Memory protection circuit for EPROM [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  07.01.2000
Database last updated on 01.10.2024
Most recent event   Tooltip07.01.2000No opposition filed within time limitpublished on 23.02.2000 [2000/08]
Applicant(s)For all designated states
NEC Corporation
7-1, Shiba 5-chome Minato-ku
Tokyo 108-8001 / JP
[N/P]
Former [1995/13]For all designated states
NEC CORPORATION
7-1, Shiba 5-chome Minato-ku
Tokyo / JP
Inventor(s)01 / Fukushima, Kiyoshi
c/o NEC Corporation, 7-1, Shina 5-chome
Minato-ku, Tokyo / JP
[1995/13]
Representative(s)Betten & Resch
Patent- und Rechtsanwälte PartGmbB
Postfach 10 02 51
80076 München / DE
[N/P]
Former [1995/13]Betten & Resch
Reichenbachstrasse 19
D-80469 München / DE
Application number, filing date94114821.520.09.1994
[1995/13]
Priority number, dateJP1993025529820.09.1993         Original published format: JP 25529893
[1995/13]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0645774
Date:29.03.1995
Language:EN
[1995/13]
Type: A3 Search report 
No.:EP0645774
Date:02.11.1995
Language:EN
[1995/44]
Type: B1 Patent specification 
No.:EP0645774
Date:03.03.1999
Language:EN
[1999/09]
Search report(s)(Supplementary) European search report - dispatched on:EP20.09.1995
ClassificationIPC:G11C16/06
[1995/13]
CPC:
G11C16/22 (EP,US); G11C7/24 (EP,US)
Designated contracting statesDE,   FR,   GB [1995/13]
TitleGerman:Speicherschutzschaltung für EPROM[1998/27]
English:Memory protection circuit for EPROM[1995/13]
French:Circuit de protection pour mémoire EPROM[1995/13]
Former [1995/13]Speicherschützschaltung für EPROM
Examination procedure20.02.1996Examination requested  [1996/16]
26.05.1998Despatch of communication of intention to grant (Approval: Yes)
04.09.1998Communication of intention to grant the patent
30.11.1998Fee for grant paid
30.11.1998Fee for publishing/printing paid
Opposition(s)04.12.1999No opposition filed within time limit [2000/08]
Fees paidRenewal fee
20.09.1996Renewal fee patent year 03
30.09.1997Renewal fee patent year 04
23.09.1998Renewal 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[A]JPS62236053  ;
 [A]JPH0520204  ;
 [A]US4744062  (NAKAMURA HIDEO [JP], et al) [A] 1 * column 4, line 20 - column 6, line 51; figures 1,2 *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19880406), vol. 12, no. 104, Database accession no. (P - 685), & JP62236053 A 19871016 (MATSUSHITA ELECTRIC IND CO.) [A] 1,2 * abstract *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19930607), vol. 17, no. 296, Database accession no. (P - 1551), & JP520204 A 19930129 (MATSUSHITA ELECTRIC IND CO.) [A] 1,2 * abstract *
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.