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Extract from the Register of European Patents

EP About this file: EP0879497

EP0879497 - DYNAMIC MECHANICALLY SWITCHED DAMPING SYSTEM AND METHOD FOR DAMPING POWER OSCILLATIONS USING THE SAME [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  19.02.1999
Database last updated on 02.11.2024
Most recent event   Tooltip19.02.1999Application deemed to be withdrawnpublished on 07.04.1999 [1999/14]
Applicant(s)For all designated states
ABB POWER T & D COMPANY INC.
Centennial Campus - NCSU, 1021 Main Campus Drive
Raleigh, NC 27606 / US
[1998/48]
Inventor(s)01 / KHAN, Aftab, H.
112 Laurel Branch Drive
Cary, NC 27513 / US
02 / WONG, Willie, K.
106 Welchdale Court
Cary, NC 27513 / US
03 / TIMKO, Kevin, J.
1102 New Dover Road
Apex, NC 27502 / US
04 / RECKLEFF, John, G.
1908 Prescott Place
Raleigh, NC 27615 / US
[1998/48]
Representative(s)WP Thompson
138 Fetter Lane
London EC4A 1BT / GB
[N/P]
Former [1998/48]W.P. THOMPSON & CO.
Eastcheap House Central Approach
Letchworth, Hertfordshire SG6 3DS / GB
Application number, filing date96905328.929.01.1996
[1998/48]
WO1996US01414
Priority number, dateUS1995037992030.01.1995         Original published format: US 379920
[1998/48]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9624188
Date:08.08.1996
Language:EN
[1996/36]
Type: A1 Application with search report 
No.:EP0879497
Date:25.11.1998
Language:EN
The application published by WIPO in one of the EPO official languages on 08.08.1996 takes the place of the publication of the European patent application.
[1998/48]
Search report(s)International search report - published on:US08.08.1996
(Supplementary) European search report - dispatched on:EP22.07.1998
ClassificationIPC:H02K11/00, H02J3/24
[1998/48]
CPC:
H02J3/1807 (EP,US); H02J3/1828 (EP,US); H02J3/24 (EP,US);
Y02E40/30 (EP,US)
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IE,   IT,   LI,   LU,   MC,   NL,   PT,   SE [1998/48]
TitleGerman:DYNAMISCHES MECHANISCH SCHALTENDES DÄMPFUNGSSYSTEM UND VERFAHREN ZUR LEISTUNGSSCHWANKUNGSDÄMPFUNG DAMIT[1998/48]
English:DYNAMIC MECHANICALLY SWITCHED DAMPING SYSTEM AND METHOD FOR DAMPING POWER OSCILLATIONS USING THE SAME[1998/48]
French:SYSTEME D'AMORTISSEMENT DYNAMIQUE A COMMUTATION MECANIQUE ET PROCEDE D'AMORTISSEMENT D'OSCILLATIONS DE PUISSANCE METTANT EN OEUVRE CE SYSTEME[1998/48]
Entry into regional phase31.07.1997National basic fee paid 
31.07.1997Search fee paid 
31.07.1997Designation fee(s) paid 
31.07.1997Examination fee paid 
Examination procedure25.07.1996Request for preliminary examination filed
International Preliminary Examining Authority: US
31.07.1997Examination requested  [1998/48]
16.10.1998Application deemed to be withdrawn, date of legal effect  [1999/14]
16.11.1998Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time  [1999/14]
Fees paidRenewal fee
07.01.1998Renewal fee patent year 03
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Documents cited:Search[YA]WO9303531  (ELECTRIC POWER RES INST [US]) [Y] 7 * page 6, line 1 - page 16, line 15; figures 1-3F * [A] 1-6,10,13,14,16,17,21,22;
 [XY]WO9323910  (ELECTRIC POWER RES INST [US]) [X] 1-10,13,14,16-18,21 * page 29, line 36 - page 37, line 3; figures 14-17 * [Y] 4,7,14;
 [YA]WO9424752  (ELECTRIC POWER RES INST [US]) [Y] 14 * page 25, line 14 - page 35, line 34 * * page 41, line 34 - page 44, line 37; figures 10-19E * [A] 1,2,5,6,8-10,16,17;
 [Y]  - PEGGS ET AL, "innovations for protection and control of high voltage capacitor banks on the virginia power system", PROCEEDINGS OF THE POWER ENGINEERING SOCIETY TRANSMISSION AND DISTRIBUTION CONFERENCE, CHICAGO, (19940410), pages 284 - 290, XP000470546 [Y] 4 * the whole document *

DOI:   http://dx.doi.org/10.1109/TDC.1994.328393
International search[X]US4080559  (WRIGHT GEORGE F, et al);
 [X]US4567423  (DOBSA JOSIP [CH], et al)
 [X]  - IEEE TRANSACTIONS ON POWER SYSTEMS, 1993, 8(2), ANGQUIST L. et al., "Power Oscillation Damping Using Controlled Reactive Power Compensation - A Comparison Between Series and Shunt Approaches", pages 687-700.
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.