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EP0474312
European procedure
Extract from the Register of European Patents
EP About this file: EP0474312
| EP0474312 - DC-DC converter [Right-click to bookmark this link] | Status | Patent revoked Status updated on 29.09.2000 Database last updated on 11.01.2025 | Most recent event Tooltip | 29.09.2000 | Revocation of patent | published on 15.11.2000 [2000/46] | Applicant(s) | For all designated states N.V. Nederlandsche Apparatenfabriek NEDAP Oude Winterswijkseweg 7 NL-7141 DE Groenlo / NL | [N/P] |
| Former [1992/11] | For all designated states N.V. Nederlandsche Apparatenfabriek NEDAP Oude Winterswijkseweg 7 NL-7141 DE Groenlo / NL | Inventor(s) | 01 /
Hoeksma, Gerben Simon Bargerkempke 5 NL-7103 DX Winterswijk / NL | [1992/11] | Representative(s) | Smulders, Theodorus A.H.J., et al Vereenigde Postbus 87930 2508 DH Den Haag / NL | [N/P] |
| Former [1992/27] | Smulders, Theodorus A.H.J., Ir., et al Vereenigde Octrooibureaux Nieuwe Parklaan 97 NL-2587 BN 's-Gravenhage / NL | ||
| Former [1992/11] | Smulders, Theodorus A.H.J., Ir. Vereenigde Octrooibureaux, P.O. Box 87930 NL-2508 DH 's-Gravenhage / NL | Application number, filing date | 91202286.0 | 06.09.1991 | [1992/11] | Priority number, date | NL19900001962 | 06.09.1990 Original published format: NL 9001962 | [1992/11] | Filing language | NL | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0474312 | Date: | 11.03.1992 | Language: | EN | [1992/11] | Type: | B1 Patent specification | No.: | EP0474312 | Date: | 02.08.1995 | Language: | EN | [1995/31] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 28.10.1991 | Classification | IPC: | H02M3/335 | [1992/11] | CPC: |
H02M3/33569 (EP,US);
H02M3/01 (EP,US);
Y02B70/10 (EP)
| Designated contracting states | DE, FR, GB, NL [1992/11] | Title | German: | Gleichstromwandler | [1992/11] | English: | DC-DC converter | [1992/11] | French: | Convertisseur continu-continu | [1992/11] | Examination procedure | 09.09.1992 | Examination requested [1992/46] | 27.05.1994 | Despatch of a communication from the examining division (Time limit: M04) | 24.08.1994 | Reply to a communication from the examining division | 29.09.1994 | Despatch of communication of intention to grant (Approval: No) | 31.01.1995 | Despatch of communication of intention to grant (Approval: later approval) | 03.02.1995 | Communication of intention to grant the patent | 09.05.1995 | Fee for grant paid | 09.05.1995 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
30.04.1996
21.06.1996
ADMISSIBLE Robert Bosch GmbH Postfach 30 02 20 70442 Stuttgart / DE | [1996/26] | 26.06.1996 | Invitation to proprietor to file observations on the notice of opposition | 19.12.1996 | Reply of patent proprietor to notice(s) of opposition | 16.01.1997 | Communication of observations of patent proprietor (Time limit: M02) | 20.03.1997 | Reply of parties involved to observations of patent proprietor | 23.02.1998 | Despatch of a communication from the opposition division (Time limit: M06) | 02.09.1998 | Reply to a communication from the opposition division | 03.05.1999 | Date of oral proceedings | 28.06.1999 | Despatch of interlocutory decision in opposition | 28.06.1999 | Despatch of minutes of oral proceedings | 08.07.1999 | Legal effect of interlocutory decision in opposition | 06.05.2000 | Legal effect of revocation of patent [2000/46] | 24.05.2000 | Despatch of communication that the patent will be revoked | Fees paid | Renewal fee | 30.09.1993 | Renewal fee patent year 03 | 30.09.1994 | Renewal fee patent year 04 |
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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]EP0105541 (NEDAP NV [NL]); | [A]EP0279335 (THOMSON BRANDT GMBH [DE]) | [A] - APEC'89 CONFERENCE PROCEEDINGS March 1989, BALTIMORE, MARYLAND, USA pages 413 - 422; & HENZE: 'Development of a DC-to-DC Power Converter for Distributed Power Processing' | Examination | DE3617374 |