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EP0469934
European procedure
Extract from the Register of European Patents
EP About this file: EP0469934
| EP0469934 - Semiconductor memory device and method of operation thereof [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 18.10.2002 Database last updated on 12.07.2024 | Most recent event Tooltip | 18.10.2002 | No opposition filed within time limit | published on 04.12.2002 [2002/49] | Applicant(s) | For all designated states Hitachi, Ltd. 6, Kanda Surugadai 4-chome Chiyoda-ku Tokyo / JP | [N/P] |
| Former [2001/50] | For all designated states Hitachi, Ltd. 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo / JP | ||
| Former [1992/06] | For all designated states HITACHI, LTD. 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 100 / JP | Inventor(s) | 01 /
Saito, Ryuichi 42-67 Ishinazaka-cho 1-chome Hitachi-shi, Ibaraki 319-12 / JP | 02 /
Onose, Hidekatsu 17-1-404 Moriyama-cho 3-chome Hitachi-shi, Ibaraki 316 / JP | 03 /
Kobayashi, Yutaka 2773-6 Mawatari Katsuta-shi, Ibaraki 312 / JP | 04 /
Ohue, Michio 10-9 Omika-cho 1-chome Hitachi-shi, Ibaraki 316 / JP | [1992/06] | Representative(s) | Calderbank, Thomas Roger, et al Mewburn Ellis LLP City Tower 40 Basinghall Street London EC2V 5DE / GB | [N/P] |
| Former [1992/06] | Calderbank, Thomas Roger, et al MEWBURN ELLIS York House 23 Kingsway London WC2B 6HP / GB | Application number, filing date | 91307157.7 | 02.08.1991 | [1992/06] | Priority number, date | JP19900205004 | 03.08.1990 Original published format: JP 20500490 | [1992/06] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0469934 | Date: | 05.02.1992 | Language: | EN | [1992/06] | Type: | A3 Search report | No.: | EP0469934 | Date: | 09.09.1992 | Language: | EN | [1992/37] | Type: | B1 Patent specification | No.: | EP0469934 | Date: | 12.12.2001 | Language: | EN | [2001/50] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 17.07.1992 | Classification | IPC: | G11C11/22, G11C11/56 | [1992/06] | CPC: |
G11C11/22 (EP,US);
H01L27/10 (KR);
H10B53/00 (EP,US);
G11C11/5657 (EP,US);
G11C16/08 (EP,US);
G11C8/14 (EP,US);
H10B12/30 (EP,US)
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| Designated contracting states | DE, FR, GB, IT [1992/06] | Title | German: | Betriebsverfahren und Anordnung eines Halbleiterspeichers | [1992/06] | English: | Semiconductor memory device and method of operation thereof | [1992/06] | French: | Dispositif de mémoire à semi-conducteurs et méthode d'opération de celui-ci | [1992/06] | Examination procedure | 23.09.1991 | Examination requested [1992/06] | 03.08.1995 | Despatch of a communication from the examining division (Time limit: M06) | 09.02.1996 | Reply to a communication from the examining division | 11.04.1996 | Despatch of a communication from the examining division (Time limit: M06) | 21.01.1997 | Reply to a communication from the examining division | 09.05.1997 | Despatch of a communication from the examining division (Time limit: M06) | 10.12.1997 | Reply to a communication from the examining division | 30.09.1998 | Despatch of a communication from the examining division (Time limit: M06) | 18.05.1999 | Reply to a communication from the examining division | 25.05.1999 | Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time | 06.09.1999 | Despatch of a communication from the examining division (Time limit: M06) | 14.03.2000 | Reply to a communication from the examining division | 07.08.2000 | Despatch of communication of intention to grant (Approval: Yes) | 30.01.2001 | Communication of intention to grant the patent | 20.04.2001 | Fee for grant paid | 20.04.2001 | Fee for publishing/printing paid | Divisional application(s) | EP00106043.3 / EP1024497 | EP00106044.1 / EP1024498 | EP00106045.8 / EP1024499 | Opposition(s) | 13.09.2002 | No opposition filed within time limit [2002/49] | Request for further processing for: | 26.05.1999 | Request for further processing filed | 18.05.1999 | Full payment received (date of receipt of payment) Request granted | 12.08.1999 | Decision despatched | 25.05.1999 | Request for further processing filed | 18.05.1999 | Full payment received (date of receipt of payment) Request deemed not to be filed | 12.08.1999 | Decision despatched | 18.05.1999 | Request for further processing filed | 18.05.1999 | Full payment received (date of receipt of payment) Request deemed not to be filed | 12.08.1999 | Decision despatched | 19.12.1997 | Request for further processing filed | 10.12.1997 | Full payment received (date of receipt of payment) Request deemed not to be filed | 29.12.1997 | Decision despatched | 10.12.1997 | Request for further processing filed | 10.12.1997 | Full payment received (date of receipt of payment) Request deemed not to be filed | 29.12.1997 | Decision despatched | 21.01.1997 | Request for further processing filed | 21.01.1997 | Full payment received (date of receipt of payment) Request deemed not to be filed | 06.02.1997 | Decision despatched | Fees paid | Renewal fee | 27.08.1993 | Renewal fee patent year 03 | 23.08.1994 | Renewal fee patent year 04 | 22.08.1995 | Renewal fee patent year 05 | 21.08.1996 | Renewal fee patent year 06 | 22.08.1997 | Renewal fee patent year 07 | 21.08.1998 | Renewal fee patent year 08 | 23.08.1999 | Renewal fee patent year 09 | 22.08.2000 | Renewal fee patent year 10 | 22.08.2001 | Renewal fee patent year 11 |
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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]GB934419 (PHILIPS ELECTRICAL IND LTD); | [X]US3132326 (CROWNOVER JOSEPH W); | [A]US3866189 (BERGER JUDO LEWIS); | [A]EP0338158 (RAMTRON CORP [US]) | [ ] - PROCEEDINGS OF THE IEEE 1988 NATIONAL AEROSPACE AND ELECTRONICS CONFERENCE NAECON 1988, 23rd - 27th May 1988, vol. 1, pages 65-72; J. EVANS et al.: "Ferroelectric non-volatile memory", page 65, right-hand column, line 9 - page 66, left-hand column, line 27; figures 1-3. | [ ] - IEEE TRANS. ON NUCLEAR SCIENCE, vol. 35, no. 6, December 1988, pages 1461-1466, New York, US; G.C. MESSENGER et al.: "Ferroelectric memories: A possible answer to the hardened nonvolatile question", page 1465, right-hand column, line 11 - line 42; figure 7A. | Examination | - PROCEEDINGS OF THE IEEE 1988 NATIONAL AEROSPACE AND ELECTRONICS CONFERENCE NAECON 1988 vol. 1, 23 May 1988, NEW YORK US pages 65 - 72; E.A. EVANS: 'Ferroelectric non-volatile memory' |