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Extract from the Register of European Patents

EP About this file: EP0729917

EP0729917 - Application of a process for biological denitrification of water [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  21.11.1997
Database last updated on 31.08.2024
Most recent event   Tooltip21.11.1997Withdrawal of applicationpublished on 07.01.1998 [1998/02]
Applicant(s)For all designated states
WABAG Wassertechnische Anlagen GmbH
Lichtenfelser Strasse 53
95326 Kulmbach / DE
[1996/36]
Inventor(s)01 / Speier, Martin
Burghaiger Strasse 24
D-95326 Kulmbach / DE
02 / Eicken, Walter
Weltkampstrasse 12a
D-49497 Ibbenbüren / DE
03 / Hagen, Klaus, Dr.
Grünbaumer Strasse 12
D-95326 Kulmbach / DE
04 / Sielhorst, Wilhelm
Hünensand 17
D-49716 Meppen-Hünten / DE
05 / Weber, Hans-Joachim
Hünensand 7
D-49716 Meppen-Hünten / DE
[1996/36]
Representative(s)Müller, Jürgen
Deutsche Babcock AG Lizenz- und Patentabteilung Duisburger Strasse 375
46049 Oberhausen / DE
[N/P]
Former [1996/36]Müller, Jürgen, Dipl.-Ing.
Deutsche Babcock AG Lizenz- und Patentabteilung Duisburger Strasse 375
46049 Oberhausen / DE
Application number, filing date95103135.004.03.1995
[1996/36]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0729917
Date:04.09.1996
Language:DE
[1996/36]
Search report(s)(Supplementary) European search report - dispatched on:EP21.08.1995
ClassificationIPC:C02F3/30, C02F1/44, C02F1/52
[1996/36]
CPC:
C02F3/1215 (EP); C02F1/444 (EP); C02F3/302 (EP);
Y02W10/10 (EP)
Designated contracting statesAT,   DK,   ES,   FR,   GB,   SE [1996/36]
TitleGerman:Anwendung eines Verfahrens zur biologischen Denitrifikation von Wasser[1996/36]
English:Application of a process for biological denitrification of water[1996/36]
French:Application d'un procédé pour la dénitrification biologique de l'eau[1996/36]
Examination procedure06.10.1995Examination requested  [1996/36]
23.10.1997Despatch of a communication from the examining division (Time limit: M04)
18.11.1997Application withdrawn by applicant  [1998/02]
Fees paidRenewal fee
07.02.1997Renewal fee patent year 03
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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[Y]JPH0231893  ;
 [Y]DE4223285  (SUED CHEMIE AG [DE]) [Y] 2,7 * column 2, line 58 - column 3, line 24 * * column 3, line 44 - column 4, line 20 * * column 4, line 29 - line 34 * * column 4, line 50 - column 5, line 34; figure 1 *;
 [A]EP0326457  (BERTIN & CIE [FR]) [A] 1,2 * column 5, line 48 - line 56; figure 1 * * column 7; claims 1,4 *;
 [A]JPH06328099  ;
 [A]EP0504019  (OMNIUM TRAITEMENT VALORISA [FR]) [A] 2 * column 4; figure .; claims 1,3,4 *;
 [A]US4687574  (HELLMAN GORAN [US]) [A] 2 * column 6, line 12 - line 36; claim 1 *
 [Y]  - KRISTENSEN, G. HOLM ET AL., "BIOLOGICAL DENITRIFICATION OF WASTE WATER FROM WET LIME-GYPSUM FLUE GAS DESULFURIZATION PLANTS", WATER SCI. TECHNOLOGY, LONDON, GB, vol. 23, no. 4-6, pages 691 - 700 [Y] 1,2,7 * page 691, paragraph 1 *
 [Y]  - DATABASE WPI, 1, Derwent World Patents Index, vol. 90, no. 11, Database accession no. 90-079161, & JPH0231893 A 19900201 (KUBOTA KK) [Y] 1,7 * abstract *
 [DA]  - H. BODE, "MESOPHILE UND THERMOPHILE HOCHLASTDENITRIFIKATION BEI STARK NITRATHALTIGEM ABWASSER", KORRESPONDENZ ABWASSER, AUGUSTIN DE, vol. 35, no. 5, pages 436 - 438 [DA] 1-8 * the whole document *
 [A]  - DATABASE WPI, 1, Derwent World Patents Index, vol. 95, no. 07, Database accession no. 95-048143, & JPH06328099 A 19941129 (DAIKI KK) [A] 1 * abstract *
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.