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Extract from the Register of European Patents

EP About this file: EP0742173

EP0742173 - Process for the preparation of abrasion-resistant sodium perborate monohydrate with high apparent density and high solubility [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  06.10.2000
Database last updated on 25.09.2024
Most recent event   Tooltip06.10.2000No opposition filed within time limitpublished on 22.11.2000 [2000/47]
Applicant(s)For all designated states
Degussa GmbH
60287 Frankfurt am Main / DE
[N/P]
Former [1999/36]For all designated states
Degussa-Hüls Aktiengesellschaft
60287 Frankfurt am Main / DE
Former [1999/26]For all designated states
Degussa-Hüls Aktiengesellschaft
45764 Marl / DE
Former [1996/46]For all designated states
Degussa Aktiengesellschaft
Weissfrauenstrasse 9
60311 Frankfurt / DE
Inventor(s)01 / Pelgrims, Ivan
Wild Veld 9
2550 Kontich / BE
02 / Klasen, Claas-Jürgen, Dr.
Am Silberberg 19c
63579 Freigericht / DE
[1996/46]
Application number, filing date96105688.411.04.1996
[1996/46]
Priority number, dateDE199511660910.05.1995         Original published format: DE 19516609
[1996/46]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0742173
Date:13.11.1996
Language:DE
[1996/46]
Type: B1 Patent specification 
No.:EP0742173
Date:08.12.1999
Language:DE
[1999/49]
Search report(s)(Supplementary) European search report - dispatched on:EP02.09.1996
ClassificationIPC:C01B15/12
[1996/46]
CPC:
C01B15/126 (EP,US); C01B15/12 (EP,US)
Designated contracting statesAT,   BE,   DE,   ES,   FR,   GB,   IT,   PT [1996/46]
Extension statesSI11.04.1996
TitleGerman:Verfahren zur Herstellung von abriebfestem Natriumperborat-monohydrat mit hoher Schüttdichte und hoher Lösegeschwindigkeit[1996/46]
English:Process for the preparation of abrasion-resistant sodium perborate monohydrate with high apparent density and high solubility[1996/46]
French:Procédé de préparation du perborate de sodium monohydraté résistant à l'abrasion de densité apparente et solubilité élevées[1996/46]
Examination procedure15.01.1997Examination requested  [1997/12]
29.10.1997Despatch of a communication from the examining division (Time limit: M04)
24.02.1998Reply to a communication from the examining division
24.07.1998Despatch of a communication from the examining division (Time limit: M04)
07.11.1998Reply to a communication from the examining division
23.03.1999Despatch of communication of intention to grant (Approval: Yes)
09.06.1999Communication of intention to grant the patent
06.07.1999Fee for grant paid
06.07.1999Fee for publishing/printing paid
Opposition(s)09.09.2000No opposition filed within time limit [2000/47]
Fees paidRenewal fee
16.03.1998Renewal fee patent year 03
23.03.1999Renewal fee patent year 04
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Lapses during opposition  TooltipPT09.03.2000
[2000/43]
Documents cited:Search[DX]DE2650225  (INTEROX) [DX] 1,3 * claim - * * page 5, paragraph 1 - page 6, paragraph 1 * * page 7, paragraph 3 * * page 8, paragraph 2 * * page 10, paragraph 5 - page 11, paragraph 5 * * page 12, paragraph 4 - page 13, paragraph 2 * * table 3 *;
 [DA]DE3941851  (DEGUSSA AG) [DA] 1* claim 1 *;
 [A]  - CHIANESE A ET AL, "The growth and dissolution of sodium perborate crystals in a fluidized bed crystallizer", JOURNAL OF CRYSTAL GROWTH, SEPT. 1989, NETHERLANDS, ISSN 0022-0248, vol. 97, no. 2, pages 375 - 386, XP002010930 [A] 1-4 * the whole document *

DOI:   http://dx.doi.org/10.1016/0022-0248(89)90219-4
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.