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EP0309254
European procedure
Extract from the Register of European Patents
EP About this file: EP0309254
| EP0309254 - Apparatus and process for deriving an AC voltage from a DC voltage including detecting direct current magnetic flux deflections of an electrical transformer [Right-click to bookmark this link] | |||
| Former [1989/13] | Apparatus and process for detecting direct current magnetic flux deflections of an electrical transformer | ||
| [1998/21] | Status | No opposition filed within time limit Status updated on 08.10.1999 Database last updated on 29.03.2025 | Most recent event Tooltip | 05.10.2005 | Change: Appeal number | Applicant(s) | For all designated states MITSUBISHI DENKI KABUSHIKI KAISHA 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100 / JP | [N/P] |
| Former [1989/13] | For all designated states MITSUBISHI DENKI KABUSHIKI KAISHA 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100 / JP | Inventor(s) | 01 /
Kouan, Toyokazu c/o Ako Seisakusho Mitsubishi Denki Kabushiki Kaisha 651, Tenwa Ako City Hyogo Prefecture / JP | 02 /
Shiono, Katsumi c/o Ako Seisakusho Mitsubishi Denki Kabushiki Kaisha 651, Tenwa Ako City Hyogo Prefecture / JP | [1989/13] | Representative(s) | Hackett, Sean James, et al Marks & Clerk LLP 90 Long Acre London WC2E 9RA / GB | [N/P] |
| Former [1989/13] | Hackett, Sean James, et al MARKS & CLERK, 57-60 Lincoln's Inn Fields London WC2A 3LS / GB | Application number, filing date | 88308823.9 | 22.09.1988 | [1989/13] | Priority number, date | JP19870238106 | 22.09.1987 Original published format: JP 23810687 | JP19880023851 | 05.02.1988 Original published format: JP 2385188 | [1989/13] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0309254 | Date: | 29.03.1989 | Language: | EN | [1989/13] | Type: | B1 Patent specification | No.: | EP0309254 | Date: | 02.12.1998 | Language: | EN | [1998/49] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 30.01.1989 | Classification | IPC: | G01R15/20, G01R19/15 | [1998/21] | CPC: |
G01R15/207 (EP,US)
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| Former IPC [1989/13] | G01R15/02, G01R19/15 | Designated contracting states | CH, DE, FR, GB, IT, LI, SE [1989/13] | Title | German: | Gerät und Verfahren zum Ableiten einer Wechselspannung aus einer Gleichspannung mit dem Nachweis von Abweichungen des magnetischen Gleichstromflusses eines elektrischen Transformators | [1998/21] | English: | Apparatus and process for deriving an AC voltage from a DC voltage including detecting direct current magnetic flux deflections of an electrical transformer | [1998/22] | French: | Appareil et procédé pour dériver une tension alternative d'une tension continue comprenant la détection des déviations du flux magnétique d'un courant continu dans un transformateur électrique | [1998/21] |
| Former [1989/13] | Gerät und Verfahren zum Nachweis von magnetischen Gleichstromflussablenkungen eines elektrischen Wandlers | ||
| Former [1989/13] | Apparatus and process for detecting direct current magnetic flux deflections of an electrical transformer | ||
| Former [1989/13] | Appareil et procédé pour détecter les déviations du flux magnétique dû au courant continu dans un transformateur électrique | Examination procedure | 11.07.1989 | Examination requested [1989/36] | 03.12.1991 | Despatch of a communication from the examining division (Time limit: M06) | 12.06.1992 | Reply to a communication from the examining division | 13.08.1992 | Despatch of a communication from the examining division (Time limit: M04) | 12.08.1993 | Despatch of communication that the application is refused, reason: substantive examination {1} | 20.03.1998 | Despatch of communication of intention to grant (Approval: Yes) | 08.04.1998 | Communication of intention to grant the patent | 26.06.1998 | Fee for grant paid | 26.06.1998 | Fee for publishing/printing paid | 23.07.1998 | Despatch of a communication from the examining division (Time limit: M02) | 07.08.1998 | Reply to a communication from the examining division | Appeal following examination | 13.10.1993 | Appeal received No. T0002/94 | 22.12.1993 | Statement of grounds filed | 27.02.1997 | Invitation to file observations in an appeal (Time limit: M04) [1997/09] | 09.07.1997 | Date of receipt of observations in an appeal [1997/28] | 04.02.1998 | Result of appeal procedure: remittal for grant | 04.02.1998 | Date of oral proceedings | Opposition(s) | 03.09.1999 | No opposition filed within time limit [1999/47] | Fees paid | Renewal fee | 21.09.1990 | Renewal fee patent year 03 | 28.12.1990 | Renewal fee patent year 04 | 15.09.1992 | Renewal fee patent year 05 | 16.09.1993 | Renewal fee patent year 06 | 08.09.1994 | Renewal fee patent year 07 | 08.09.1995 | Renewal fee patent year 08 | 12.09.1996 | Renewal fee patent year 09 | 10.09.1997 | Renewal fee patent year 10 | 09.09.1998 | 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]JP5797368 ; | [X]US4147972 (HOCHSTETTER WERNER); | [A]US3863109 (EMANUEL ALEXANDER E, et al) | [A] - PATENT ABSTRACTS OF JAPAN, vol. 6, no. 182 (E-131)[1060], 18th September 1982; & JP-A-57 97 368 (MEIDENSHA K.K.) 17-06-1982, & JP5797368 A 00000000 | Examination | US4255705 |