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Extract from the Register of European Patents

EP About this file: EP0987818

EP0987818 - Switching amplifier for generating continuous arbitrary waveforms for magnetic resonance imaging coils [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  15.10.2004
Database last updated on 20.12.2024
Most recent event   Tooltip26.06.2009Change - representativepublished on 29.07.2009  [2009/31]
Applicant(s)For all designated states
GENERAL ELECTRIC COMPANY
1 River Road
Schenectady, NY 12345 / US
[N/P]
Former [2000/12]For all designated states
GENERAL ELECTRIC COMPANY
1 River Road
Schenectady, NY 12345 / US
Inventor(s)01 / Steigerwald, Robert Louis
3 Sandstone Drive
Burnt Hills, New York 12027 / US
02 / Wirth, William Frederick
W3763 County Highway B
Johnson Creek, Wisconsin 53038 / US
03 / Stevanovic, Ljubisa Dragoljub
1305 Viewmont Drive
Niskayuna, New York 12309 / US
04 / Park, John Norton
723 Grooms Road
Rexford, New York 12148 / US
[2000/12]
Representative(s)Goode, Ian Roy, et al
London Patent Operation
General Electric International, Inc.
15 John Adam Street
London
WC2N 6LU / GB
[N/P]
Former [2009/31]Goode, Ian Roy, et al
London Patent Operation General Electric International, Inc. 15 John Adam Street London
WC2N 6LU / GB
Former [2000/12]Goode, Ian Roy, et al
GE LONDON PATENT OPERATION, Essex House, 12/13 Essex Street
London WC2R 3AA / GB
Application number, filing date99306787.526.08.1999
[2000/12]
Priority number, dateUS1998014855904.09.1998         Original published format: US 148559
[2000/12]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0987818
Date:22.03.2000
Language:EN
[2000/12]
Type: A3 Search report 
No.:EP0987818
Date:20.03.2002
[2002/12]
Type: B1 Patent specification 
No.:EP0987818
Date:10.12.2003
Language:EN
[2003/50]
Search report(s)(Supplementary) European search report - dispatched on:EP01.02.2002
ClassificationIPC:H03F3/217
[2000/12]
CPC:
H03F3/2171 (EP,US); H03F3/217 (KR); G01R33/3852 (EP)
Designated contracting statesDE,   NL [2002/50]
Former [2000/12]AT,  BE,  CH,  CY,  DE,  DK,  ES,  FI,  FR,  GB,  GR,  IE,  IT,  LI,  LU,  MC,  NL,  PT,  SE 
TitleGerman:Schaltverstärker zum Generieren von kontinuierlichen, willkürlichen Funktionen für Spülen bei der Magnetresonanz-Bildgebung[2000/12]
English:Switching amplifier for generating continuous arbitrary waveforms for magnetic resonance imaging coils[2000/12]
French:Amplificateur de commutation pour produire des formes d'ondes arbitraires continues pour bobines d'imagerie par résonance magnétique[2000/12]
Examination procedure20.09.2002Examination requested  [2002/47]
05.06.2003Communication of intention to grant the patent
15.10.2003Fee for grant paid
15.10.2003Fee for publishing/printing paid
Opposition(s)13.09.2004No opposition filed within time limit [2004/49]
Fees paidRenewal fee
31.08.2001Renewal fee patent year 03
02.09.2002Renewal fee patent year 04
01.09.2003Renewal fee patent year 05
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Documents cited:Search[Y]US4468626  (SWANSON HILMER I [US]) [Y] 7 * abstract *;
 [Y]US4733342  (MUELLER ALBERT [DE], et al) [Y] 1-11 * abstract *;
 [Y]US5513094  (STANLEY GERALD R [US]) [Y] 7 * abstract *;
 [DY]US5663647  (WIRTH WILLIAM FREDERICK [US], et al) [DY] 1-11 * the whole document *;
 [Y]EP0848485  (GEN ELECTRIC [US]) [Y] 1-11 * column 2, line 24 - column 4, line 6; figure 1 *;
 [A]  - CARRASCO J A ET AL, "A three domain controller for a high frequency high power four quadrant power converter for superconducting magnets", POWER ELECTRONICS SPECIALISTS CONFERENCE, 1997. PESC '97 RECORD., 28TH ANNUAL IEEE ST. LOUIS, MO, USA 22-27 JUNE 1997, NEW YORK, NY, USA,IEEE, US, (19970622), ISBN 0-7803-3840-5, pages 356 - 362, XP010241571 [A] 1-11 * the whole document *

DOI:   http://dx.doi.org/10.1109/PESC.1997.616749
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.