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Extract from the Register of European Patents

EP About this file: EP1525730

EP1525730 - METHOD FOR DIVIDING THE BIT RATE OF QPSK SIGNALS INTO TWO OR SEVERAL SUBCHANNELS [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  20.11.2009
Database last updated on 18.03.2026
Most recent event   Tooltip20.11.2009Withdrawal of applicationpublished on 23.12.2009  [2009/52]
Applicant(s)For all designated states
IGR GmbH & Co. KG.
Bahnstrasse 62
40210 Düsseldorf / DE
[2006/43]
Former [2005/17]For all designated states
Interessengemeinschaft für Rundfunkschutzrechte GmbH Schutzrechtsverwertung & Co. KG.
Bahnstrasse 62
40210 Düsseldorf / DE
Inventor(s)01 / ZSCHUNKE, Willmut
Langgesser Weg 29
64285 Darmstadt / DE
02 / DUSHCHULUUN, Khishigbayar
Kahlerstrasse 17
64283 Darmstadt / DE
 [2005/17]
Representative(s)Eichstädt, Alfred, et al
Maryniok GbR
Patent- und Rechtsanwaltssozietät
Leibnizstrasse 6
95447 Bayreuth / DE
[N/P]
Former [2005/17]Eichstädt, Alfred, Dipl.-Ing., et al
Maryniok & Eichstädt, Kuhbergstrasse 23
96317 Kronach / DE
Application number, filing date03766333.329.07.2003
[2005/17]
WO2003EP08335
Priority number, dateDE200213482331.07.2002         Original published format: DE 10234823
[2005/17]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report
No.:WO2004014034
Date:12.02.2004
Language:DE
[2004/07]
Type: A2 Application without search report 
No.:EP1525730
Date:27.04.2005
Language:DE
The application published by WIPO in one of the EPO official languages on 12.02.2004 takes the place of the publication of the European patent application.
[2005/17]
Search report(s)International search report - published on:EP08.04.2004
ClassificationIPC:H04L27/18, H04L25/03, H04L25/497
[2005/17]
CPC:
H04L27/02 (EP,US); H04L25/03834 (EP,US); H04L25/497 (EP,US);
H04L27/18 (EP,US); H04L27/2602 (EP,US); H04L27/26035 (EP,US)
Designated contracting statesAT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   HU,   IE,   IT,   LI,   LU,   MC,   NL,   PT,   RO,   SE,   SI,   SK,   TR [2005/17]
TitleGerman:VERFAHREN ZUR AUFTEILUNG DER BITRATE VON QPSK-SIGNALEN IN ZWEI ODER MEHRERE TEILKANÄLE[2005/17]
English:METHOD FOR DIVIDING THE BIT RATE OF QPSK SIGNALS INTO TWO OR SEVERAL SUBCHANNELS[2005/17]
French:VERFAHREN ZUR AUFTEILUNG DER BITRATE VON QPSK-SIGNALEN IN ZWEI ODER MEHRERE TEILKANALE[2005/17]
Entry into regional phase05.01.2005National basic fee paid 
05.01.2005Designation fee(s) paid 
05.01.2005Examination fee paid 
Examination procedure27.02.2004Request for preliminary examination filed
International Preliminary Examining Authority: EP
05.01.2005Examination requested  [2005/17]
06.02.2007Despatch of a communication from the examining division (Time limit: M06)
04.08.2007Reply to a communication from the examining division
28.10.2009Despatch of a communication from the examining division (Time limit: M04)
11.11.2009Application withdrawn by applicant  [2009/52]
Fees paidRenewal fee
01.08.2005Renewal fee patent year 03
31.07.2006Renewal fee patent year 04
31.07.2007Renewal fee patent year 05
31.07.2008Renewal fee patent year 06
31.07.2009Renewal fee patent year 07
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Cited inInternational search[X]   WALDECK B H ET AL: "PERFORMANCE EVALUATION OF TFO-Q2PSK IN GAUSSIAN, MULTIPATH AND FADING CHANNELS", 1999 IEEE AFRICON 5TH. AFRICON CONFERENCE IN AFRICA, CAPE TOWN, SOUTH AFRICA, 28 September 1999 (1999-09-28) - 1 October 1999 (1999-10-01), NEW YORK, USA, pages 233 - 238, XP000895832, ISBN: 0-7803-5547-4 [X] 1-22 * page 233, column R, line 1 - page 235, column R, line 14 * * page 235, column R, line 30 - page 236, column R, line 6 * * figures 1-4 *
 [X]   GRUENBACHER D M ET AL: "N dimensional orthogonal QPSK signaling with discrete prolate spheroidal sequences", RADIO AND WIRELESS CONFERENCE, 1998, COLORADO SPRINGS, CO, USA, 9 August 1998 (1998-08-09) - 12 August 1998 (1998-08-12), NEW YORK, USA, pages 63 - 66, XP010296329, ISBN: 0-7803-4988-1 [X] 1-22 * page 63, column L, line 1 - page 64, column L, line 17 * * page 66, column R, line 1 - line 11 * * figures 1-3 *

DOI:   http://dx.doi.org/10.1109/RAWCON.1998.709137
 [A]   GRUENBACHER D M ET AL: "A simple algorithm for generating discrete prolate spheroidal sequences", IEEE TRANSACTIONS ON SIGNAL PROCESSING, vol. 42, no. 11, November 1994 (1994-11-01), NEW YORK, USA, pages 3276 - 3278, XP002269014, ISSN: 1053-587X [A] 1-22 * page 3276, column R, line 12 - line 45 * * figures 1-4 *

DOI:   http://dx.doi.org/10.1109/78.330397
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.