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EP0671811
European procedure
Extract from the Register of European Patents
EP About this file: EP0671811
| EP0671811 - A controller for a brushless DC motor without a position sensor [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 10.11.2000 Database last updated on 03.09.2024 | Most recent event Tooltip | 10.11.2000 | No opposition filed within time limit | published on 27.12.2000 [2000/52] | Applicant(s) | For all designated states Seiko Epson Corporation 4-1, Nishishinjuku 2-chome, Shinjuku-ku Tokyo 163-0811 / JP | [N/P] |
| Former [2000/02] | For all designated states SEIKO EPSON CORPORATION 4-1, Nishishinjuku 2-chome, Shinjuku-ku Tokyo 160-0811 / JP | ||
| Former [1995/37] | For all designated states SEIKO EPSON CORPORATION 4-1, Nishishinjuku 2-chome Shinjuku-ku Tokyo 160 / JP | Inventor(s) | 01 /
Nagate, Takashi c/o Seiko Epson Corp., 3-5, Owa 3-chome Suwa-shi, Nagano 392 / JP | 02 /
Uetake, Akihito c/o Seiko Epson Corp., 3-5, Owa 3-chome Suwa-shi, Nagano 392 / JP | 03 /
Koike, Yoshikazu c/o Seiko Epson Corp., 3-5, Owa 3-chome Suwa-shi, Nagano 392 / JP | 04 /
Tabata, Kunio c/o Seiko Epson Corp., 3-5, Owa 3-chome Suwa-shi, Nagano 392 / JP | [1995/37] | Representative(s) | von Fischern, Bernhard, et al Hoffmann - Eitle Patent- und Rechtsanwälte Arabellastrasse 4 81925 München / DE | [N/P] |
| Former [1995/37] | Ritter und Edler von Fischern, Bernhard, Dipl.-Ing., et al Hoffmann, Eitle & Partner, Patentanwälte, Arabellastrasse 4 D-81925 München / DE | Application number, filing date | 95108346.8 | 18.10.1991 | [1995/37] | Priority number, date | JP19900281536 | 19.10.1990 Original published format: JP 28153690 | JP19900312305 | 17.11.1990 Original published format: JP 31230590 | JP19900312306 | 17.11.1990 Original published format: JP 31230690 | JP19900315451 | 20.11.1990 Original published format: JP 31545190 | JP19900315452 | 20.11.1990 Original published format: JP 31545290 | JP19900315469 | 20.11.1990 Original published format: JP 31546990 | JP19910150144 | 21.06.1991 Original published format: JP 15014491 | [1995/37] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0671811 | Date: | 13.09.1995 | Language: | EN | [1995/37] | Type: | B1 Patent specification | No.: | EP0671811 | Date: | 12.01.2000 | Language: | EN | [2000/02] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 24.07.1995 | Classification | IPC: | H02P6/14, H02K29/00, H02P6/22 | [1995/37] | CPC: |
H02K1/2746 (EP);
H02P6/18 (EP,KR);
H02K29/12 (EP);
H02P6/14 (EP);
H02P6/182 (EP);
H02P6/21 (EP);
H02P6/22 (EP)
(-)
| Designated contracting states | CH, DE, FR, GB, IT, LI [1995/37] | Title | German: | Regler für bürstenlosen Gleichstrommotor ohne Positionsgeber | [1995/37] | English: | A controller for a brushless DC motor without a position sensor | [1995/37] | French: | Régulateur pour moteur à courant continu sans balais sans détecteur de position | [1995/37] | Examination procedure | 31.05.1995 | Examination requested [1995/37] | 27.06.1997 | Despatch of a communication from the examining division (Time limit: M06) | 07.01.1998 | Reply to a communication from the examining division | 20.01.1998 | Despatch of a communication from the examining division (Time limit: M06) | 20.07.1998 | Reply to a communication from the examining division | 16.02.1999 | Despatch of communication of intention to grant (Approval: No) | 23.04.1999 | Despatch of communication of intention to grant (Approval: later approval) | 17.05.1999 | Communication of intention to grant the patent | 11.08.1999 | Fee for grant paid | 11.08.1999 | Fee for publishing/printing paid | Parent application(s) Tooltip | EP91917807.9 / EP0553354 | Divisional application(s) | EP98113499.2 / EP0881761 | Opposition(s) | 13.10.2000 | No opposition filed within time limit [2000/52] | Fees paid | Renewal fee | 30.08.1995 | Renewal fee patent year 03 | 30.08.1995 | Renewal fee patent year 04 | 30.08.1995 | Renewal fee patent year 05 | 31.10.1996 | Renewal fee patent year 06 | 29.10.1997 | Renewal fee patent year 07 | 30.10.1998 | Renewal fee patent year 08 | 21.10.1999 | Renewal fee patent year 09 |
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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]GB2198537 (HEIDELBERGER DRUCKMASCH AG) [Y] 3 * abstract *; | [A]FR2590423 (VALEO [FR]) [A] 1-6 * abstract *; | [A]EP0316077 (SONY CORP [JP]) [A] 2 * abstract *; | [A]WO9010973 (IBM [US]) [A] 4 * page 6, line 8 - line 15; figure 1 * | [X] - P.P. ACARNLEY ET AL, "Detection of Rotor Position in Stepping and Switched Motors by Monitoring of Current Waveforms", IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS AND CONTROL, NEW YORK US, vol. IE-32, no. 3, doi:doi:10.1109/TIE.1985.350161, pages 215 - 222, XP000573294 [X] 6 * the whole document * DOI: http://dx.doi.org/10.1109/TIE.1985.350161 | [YA] - S. OGASAWARA ET AL, "An Approach to Position Sensorless Drive for Brushless DC Motors", CONF. RECORD OF THE IAS 25, SEATTLE US, (19901012), vol. I, pages 443 - 447 [Y] 3 * the whole document * [A] 1,2,4,5 | [A] - "Intelligent, verschleissfrei, betriebstemperaturunabhängig: Kollektorloser Gleichstrommotor ohne Lagesensor", ANTRIEBSTECHNIK, MAINZ DE, vol. 27, no. 7, page 29 [A] 1 * the whole document * |