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EP0473925
European procedure
Extract from the Register of European Patents
EP About this file: EP0473925
| EP0473925 - Buck switching regulator with two control loops [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 19.10.1995 Database last updated on 13.11.2024 | Most recent event Tooltip | 19.10.1995 | No opposition filed within time limit | published on 06.12.1995 [1995/49] | Applicant(s) | For all designated states International Business Machines Corporation New Orchard Road Armonk, NY 10504 / US | [N/P] |
| Former [1992/11] | For all designated states International Business Machines Corporation Old Orchard Road Armonk, N.Y. 10504 / US | Inventor(s) | 01 /
Carroll, Lawrence B. 629 Sunset Drive Endwell, N.Y. 13760 / US | 02 /
Willis, Scott C. 606 Barnes Ave. Endicott, N.Y. 13760 / US | [1992/11] | Representative(s) | Schäfer, Wolfgang, et al IBM Deutschland Informationssysteme GmbH Patentwesen und Urheberrecht 70548 Stuttgart / DE | [N/P] |
| Former [1995/35] | Schäfer, Wolfgang, Dipl.-Ing., et al IBM Deutschland Informationssysteme GmbH Patentwesen und Urheberrecht D-70548 Stuttgart / DE | ||
| Former [1994/29] | Harrison, Robert John IBM Deutschland Informationssysteme GmbH D-70548 Stuttgart / DE | ||
| Former [1993/39] | Mönig, Anton, Dipl.-Ing. IBM Deutschland Informationssysteme GmbH, Patentwesen und Urheberrecht D-70548 Stuttgart / DE | ||
| Former [1993/19] | Klocke, Peter, Dipl.-Ing. IBM Deutschland Informationssysteme GmbH Patentwesen und Urheberrecht Pascalstrasse 100 D-70569 Stuttgart / DE | ||
| Former [1992/11] | Gaugel, Heinz, Dipl.-Ing. IBM Deutschland GmbH Schönaicher Strasse 220 D-7030 Böblingen / DE | Application number, filing date | 91112383.4 | 24.07.1991 | [1992/11] | Priority number, date | US19900575580 | 31.08.1990 Original published format: US 575580 | [1992/11] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0473925 | Date: | 11.03.1992 | Language: | EN | [1992/11] | Type: | A3 Search report | No.: | EP0473925 | Date: | 06.05.1992 | Language: | EN | [1992/19] | Type: | B1 Patent specification | No.: | EP0473925 | Date: | 14.12.1994 | Language: | EN | [1994/50] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 19.03.1992 | Classification | IPC: | H02M3/156, H02M1/00 | [1994/50] | CPC: |
H02M3/156 (EP,US)
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| Former IPC [1992/11] | H02M3/156 | Designated contracting states | DE, FR, GB [1992/11] | Title | German: | Abwärtstaktregler mit zwei Regelschleifen | [1992/11] | English: | Buck switching regulator with two control loops | [1992/11] | French: | Convertisseur abaisseur à découpage avec deux boucles de régulation | [1992/11] | Examination procedure | 19.06.1992 | Examination requested [1992/33] | 03.08.1993 | Despatch of a communication from the examining division (Time limit: M04) | 15.11.1993 | Reply to a communication from the examining division | 10.02.1994 | Despatch of communication of intention to grant (Approval: Yes) | 07.06.1994 | Communication of intention to grant the patent | 26.08.1994 | Fee for grant paid | 26.08.1994 | Fee for publishing/printing paid | Opposition(s) | 15.09.1995 | No opposition filed within time limit [1995/49] | Fees paid | Renewal fee | 16.07.1993 | Renewal fee patent year 03 | 18.07.1994 | 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 | [A]FR2433852 (LUCAS INDUSTRIES LTD [GB]); | [A]WO8604189 (MOTOROLA INC [US]) |