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EP0429412
European procedure
Extract from the Register of European Patents
EP About this file: EP0429412
| EP0429412 - Controlling a multiphase brushless motor without position sensors for the rotor, using a system of digital filtering [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 08.01.1996 Database last updated on 24.07.2024 | Most recent event Tooltip | 08.01.1996 | No opposition filed within time limit | published on 14.02.1996 [1996/07] | Applicant(s) | For all designated states STMicroelectronics Srl Via C. Olivetti, 2 20041 Agrate Brianza (Milano) / IT | [N/P] |
| Former [1991/22] | For all designated states SGS-THOMSON MICROELECTRONICS S.r.l. Via C. Olivetti, 2 I-20041 Agrate Brianza (Milano) / IT | Inventor(s) | 01 /
Bulgarelli, Olivo Via Lago Maggiore Nord, 40 I-41012 Carpi / IT | 02 /
Balboni, Edgardo Via Guazzaloca, 23 I-44040 Alberone di Cento / IT | 03 /
Gianoli, Giulia Via Trieste, 76 I-23100 Sondrio / IT | [1991/22] | Representative(s) | Pellegri, Alberto, et al Società Italiana Brevetti S.p.A. Via Carducci, 8 20123 Milano / IT | [N/P] |
| Former [1991/22] | Pellegri, Alberto, et al c/o Società Italiana Brevetti S.p.A. Via Puccini, 7 I-21100 Varese / IT | Application number, filing date | 90830527.9 | 15.11.1990 | [1991/22] | Priority number, date | IT19890083647 | 17.11.1989 Original published format: IT 8364789 | [1991/22] | Filing language | IT | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0429412 | Date: | 29.05.1991 | Language: | EN | [1991/22] | Type: | A3 Search report | No.: | EP0429412 | Date: | 03.07.1991 | Language: | EN | [1991/27] | Type: | B1 Patent specification | No.: | EP0429412 | Date: | 22.02.1995 | Language: | EN | [1995/08] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 13.05.1991 | Classification | IPC: | H02P6/18 | [1995/08] | CPC: |
H02P6/18 (EP,KR,US);
H02P6/10 (KR)
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| Former IPC [1991/22] | H02P6/02 | Designated contracting states | DE, FR, GB, SE [1991/22] | Title | German: | Regelung eines bürstenlosen Motors mit mehreren Phasen und ohne Positionssensoren für den Rotor, unter Verwendung eines Systems der digitalen Filterung | [1991/22] | English: | Controlling a multiphase brushless motor without position sensors for the rotor, using a system of digital filtering | [1991/22] | French: | Régulation d'un moteur à phase multiple et sans capteur de position pour le rotor, utilisant un système de filtration digital | [1991/22] | Examination procedure | 20.11.1991 | Examination requested [1992/07] | 11.06.1993 | Despatch of a communication from the examining division (Time limit: M04) | 21.09.1993 | Reply to a communication from the examining division | 06.10.1993 | Despatch of a communication from the examining division (Time limit: M04) | 15.11.1993 | Reply to a communication from the examining division | 25.03.1994 | Despatch of communication of intention to grant (Approval: Yes) | 08.07.1994 | Communication of intention to grant the patent | 22.09.1994 | Fee for grant paid | 22.09.1994 | Fee for publishing/printing paid | Opposition(s) | 23.11.1995 | No opposition filed within time limit [1996/07] | Fees paid | Renewal fee | 29.10.1992 | Renewal fee patent year 03 | 22.11.1993 | Renewal fee patent year 04 | 21.11.1994 | Renewal fee patent year 05 |
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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 | [Y]US4250435 (ALLEY ROBERT P [US], et al); | [Y]EP0231046 (PHILIPS PATENTVERWALTUNG [DE], et al) |