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EP0451453
European procedure
Extract from the Register of European Patents
EP About this file: EP0451453
| EP0451453 - Dynamic random access memory device equipped with two-way power voltage supplying system [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 28.02.1997 Database last updated on 24.08.2024 | Most recent event Tooltip | 28.02.1997 | No opposition filed within time limit | published on 16.04.1997 [1997/16] | Applicant(s) | For all designated states NEC Corporation 7-1, Shiba 5-chome Minato-ku Tokyo 108-8001 / JP | [N/P] |
| Former [1991/42] | For all designated states NEC CORPORATION 7-1, Shiba 5-chome Minato-ku Tokyo / JP | Inventor(s) | 01 /
Tsujimoto, Akira, c/o NEC Corporation 7-1, Shiba 5-chome Minato-ku, Tokyo / JP | [1991/42] | 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 [1991/42] | Glawe, Delfs, Moll & Partner Patentanwälte Postfach 26 01 62 D-80058 München / DE | Application number, filing date | 91101717.6 | 07.02.1991 | [1991/42] | Priority number, date | JP19900033022 | 13.02.1990 Original published format: JP 3302290 | [1991/42] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0451453 | Date: | 16.10.1991 | Language: | EN | [1991/42] | Type: | B1 Patent specification | No.: | EP0451453 | Date: | 24.04.1996 | Language: | EN | [1996/17] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 05.07.1991 | Classification | IPC: | G11C5/14, G11C7/06, G11C11/409 | [1996/17] | CPC: |
G11C7/065 (EP,US);
G11C11/401 (KR);
G11C11/4091 (EP,US);
G11C5/147 (EP,US)
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| Former IPC [1991/42] | G11C11/24, H01L27/108 | Designated contracting states | DE, FR, GB [1991/42] | Title | German: | DRAM-Einrichtung mit Zweiweg-Spannungsversorgungssystem | [1991/42] | English: | Dynamic random access memory device equipped with two-way power voltage supplying system | [1991/42] | French: | Dispositif DRAM avec un système d'alimentation en courant duplex | [1991/42] | Examination procedure | 07.02.1991 | Examination requested [1991/42] | 15.09.1994 | Despatch of a communication from the examining division (Time limit: M04) | 18.01.1995 | Reply to a communication from the examining division | 05.05.1995 | Despatch of communication of intention to grant (Approval: Yes) | 12.09.1995 | Communication of intention to grant the patent | 14.12.1995 | Fee for grant paid | 14.12.1995 | Fee for publishing/printing paid | Opposition(s) | 25.01.1997 | No opposition filed within time limit [1997/16] | Fees paid | Renewal fee | 18.02.1993 | Renewal fee patent year 03 | 18.02.1994 | Renewal fee patent year 04 | 17.02.1995 | Renewal fee patent year 05 | 16.02.1996 | Renewal fee patent year 06 |
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| 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]EP0191379 (TOSHIBA KK [JP]); | [A]EP0238228 ; | [A]EP0203718 (NORTHERN TELECOM LTD [CA]); | [A]US4879679 (KIKUDA SHIGERU [JP], et al); | [A]US4740921 (LEWANDOWSKI ALAN [US], et al) |