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EP0028293
European procedure
Extract from the Register of European Patents
EP About this file: EP0028293
| EP0028293 - Complementary transistor emitter follower circuit [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 14.09.2016 Database last updated on 24.08.2024 | Most recent event Tooltip | 14.09.2016 | No opposition filed within time limit | Applicant(s) | For all designated states International Business Machines Corporation New Orchard Road Armonk, NY 10504 / US | [N/P] |
| Former [1981/19] | For all designated states International Business Machines Corporation Old Orchard Road Armonk, N.Y. 10504 / US | Inventor(s) | 01 /
Konian, Richard Robert 49 Brookland Farms Rd. Poughkeepsie, N.Y. 12601 / US | 02 /
Walsh, James Leo 23 South Drive Hyde Park, N.Y. 12538 / US | [1981/19] | Representative(s) | Mönig, Anton IBM Deutschland Informationssysteme GmbH, Patentwesen und Urheberrecht 70548 Stuttgart / DE | [N/P] |
| Former [1981/19] | Mönig, Anton, Dipl.-Ing. IBM Deutschland Informationssysteme GmbH, Patentwesen und Urheberrecht D-70548 Stuttgart / DE | Application number, filing date | 80104751.5 | 12.08.1980 | [1981/19] | Priority number, date | US19790082255 | 05.10.1979 Original published format: US 82255 | [1981/19] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0028293 | Date: | 13.05.1981 | Language: | EN | [1981/19] | Type: | B1 Patent specification | No.: | EP0028293 | Date: | 20.04.1983 | Language: | EN | [1983/16] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 24.02.1981 | Classification | IPC: | H03K5/02, H03K19/20 | [1981/19] | CPC: |
H03K5/02 (EP,US);
H03K17/667 (EP,US);
H03K19/0136 (EP,US)
| Designated contracting states | DE, FR, GB, IT [1981/19] | Title | German: | Mit komplementären Transistoren aufgebaute Emitterfolgeschaltung | [1981/19] | English: | Complementary transistor emitter follower circuit | [1981/19] | French: | Circuit émetteur-suiveur à transistors complémentaires | [1981/19] | Examination procedure | 09.10.1981 | Examination requested [1981/51] | 19.07.1982 | Despatch of communication of intention to grant (Approval: ) | 08.10.1982 | Communication of intention to grant the patent | 26.10.1982 | Fee for grant paid | 26.10.1982 | Fee for publishing/printing paid | Opposition(s) | 23.01.1984 | No opposition filed within time limit [ N /P ] | Fees paid | Renewal fee | 19.08.1982 | Renewal fee patent year 03 |
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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 | [AD] - J. MILLMAN et al.: "Pulse, Digital, and Switching Waveforms", 1965, McGRAW-HILL BOOK CO., INC, New York, pages 302-305 | [P] - IBM TECHNICAL DISCLOSURE BULLETIN, Vol. 22, No. 8A, January 1980, New York, J. A. DORLER et al. "Complementary Emitter Follower Driver", page 3223 |