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EP0354557
European procedure
Extract from the Register of European Patents
EP About this file: EP0354557
| EP0354557 - Differential amplifier with an improved gain characteristic in a high frequency region [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 12.01.1996 Database last updated on 20.07.2024 | Most recent event Tooltip | 12.01.1996 | No opposition filed within time limit | published on 28.02.1996 [1996/09] | Applicant(s) | For all designated states NEC Corporation 7-1, Shiba 5-chome Minato-ku Tokyo 108-8001 / JP | [N/P] |
| Former [1990/33] | For all designated states NEC CORPORATION 7-1, Shiba 5-chome Minato-ku Tokyo / JP | ||
| Former [1990/07] | For all designated states NEC CORPORATION 7-1, Shiba 5-chome Minato-ku Tokyo 108-01 / JP | Inventor(s) | 01 /
Saito, Yasuo c/o NEC Corporation 33-1, Shiba 5-chome Minato-ku Tokyo / JP | [1990/07] | Representative(s) | Glawe, Delfs, Moll Partnerschaft mbB von Patent- und Rechtsanwälten Postfach 26 01 62 80058 München / DE | [N/P] |
| Former [1990/07] | Glawe, Delfs, Moll & Partner Patentanwälte Postfach 26 01 62 D-80058 München / DE | Application number, filing date | 89114739.9 | 09.08.1989 | [1990/07] | Priority number, date | JP19880199425 | 09.08.1988 Original published format: JP 19942588 | [1990/07] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0354557 | Date: | 14.02.1990 | Language: | EN | [1990/07] | Type: | A3 Search report | No.: | EP0354557 | Date: | 07.11.1990 | Language: | EN | [1990/45] | Type: | B1 Patent specification | No.: | EP0354557 | Date: | 08.03.1995 | Language: | EN | [1995/10] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 20.09.1990 | Classification | IPC: | H03F3/45, H03F1/48 | [1990/07] | CPC: |
H03F3/45076 (EP,US);
H03F1/483 (EP,US)
| Designated contracting states | DE, FR, GB [1990/07] | Title | German: | Differenzverstärker mit verbesserter Verstärkungscharakteristik in einem Hochfrequenzbereich | [1990/07] | English: | Differential amplifier with an improved gain characteristic in a high frequency region | [1990/07] | French: | Amplificateur différentiel à caractéristique de gain modifiée dans une zone haute fréquence | [1990/07] | Examination procedure | 09.08.1989 | Examination requested [1990/07] | 24.11.1992 | Despatch of a communication from the examining division (Time limit: M06) | 01.06.1993 | Reply to a communication from the examining division | 13.06.1994 | Despatch of communication of intention to grant (Approval: Yes) | 02.09.1994 | Communication of intention to grant the patent | 02.12.1994 | Fee for grant paid | 02.12.1994 | Fee for publishing/printing paid | Opposition(s) | 09.12.1995 | No opposition filed within time limit [1996/09] | Fees paid | Renewal fee | 16.08.1991 | Renewal fee patent year 03 | 20.08.1992 | Renewal fee patent year 04 | 20.08.1993 | Renewal fee patent year 05 | 18.08.1994 | 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]FR2559973 (LABO ELECTRONIQUE PHYSIQUE [FR]); | [A]US4638261 (MCGUIRE CHARLES F [US], et al) | [A] - JAPANESE JOURNAL OF APPLIED PHYSICS: SUPPLEMENTS (18TH INT. CONF. ON SOLID STATE DEVICES AND MATERIALS, TOKYO 1986), 20th - 22nd August 1986, pages 737-738, Tokyo, JP; S. KATSU et al.: "A GaAs monolithic operational amplifier" | [A] - IBM TECHNICAL DISLCOSURE BULLETIN, vol. 9, no. 11, April 1967, page 1649, New York, US; I.H. GRAHAM: "Video differential amplifier with Miller compensation" |