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Extract from the Register of European Patents

EP About this file: EP0745581

EP0745581 - Process for the preparation of glycine-N,N-diacetic acid derivatives from the reaction of glycine derivatives or their precursors with formaldehyde and an alkalimetal cyanide in an acidic aqueous medium [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  02.02.2001
Database last updated on 22.08.2024
Most recent event   Tooltip26.09.2003Lapse of the patent in a contracting state
New state(s): DK		published on 12.11.2003  [2003/46]
Applicant(s)For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
67063 Ludwigshafen / DE
[1996/49]
Inventor(s)01 / Greindl, Thomas, Dr.
Am Tiergarten 8
94127 Neuburg / DE
02 / Oftring, Alfred, Dr.
Im Röhrich 49
67098 Bad Dürkheim / DE
03 / Braun, Gerold, Dr.
Prümer Strasse 19
67071 Ludwigshafen / DE
04 / Wild, Jochen, Dr.
St.-Martin-Str. 22
67152 Ruppertsberg / DE
05 / Potthoff-Karl, Birgit, Dr.
Grünerstr. 7
67061 Ludwigshafen / DE
06 / Schuh, Georg
Buergermeister-Horlacher-Str. 84
67067 Ludwigshafen / DE
[1996/49]
Application number, filing date96108081.921.05.1996
[1996/49]
Priority number, dateDE199511898729.05.1995         Original published format: DE 19518987
[1996/49]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report 
No.:EP0745581
Date:04.12.1996
Language:DE
[1996/49]
Type: A3 Search report 
No.:EP0745581
Date:10.12.1997
[1997/50]
Type: B1 Patent specification 
No.:EP0745581
Date:05.04.2000
Language:DE
[2000/14]
Search report(s)(Supplementary) European search report - dispatched on:EP22.10.1997
ClassificationIPC:C07C229/16, C07C227/26, C07C227/24, C07C227/14, C07C227/16
[1997/49]
CPC:
C07C229/16 (EP,US); C07C227/26 (EP,US)
Former IPC [1996/49]C07C229/16, C07C227/26
Designated contracting statesBE,   DE,   DK,   ES,   FR,   GB,   IT,   NL [1996/49]
TitleGerman:Verfahren zur Herstellung von Glycin-N,N-diessigsäure-Derivaten durch Umsetzung von Glycinderivaten oder deren Vorstufen mit Formaldehyd und Alkalimetallcyanid in wässrig-alkalischem Medium[1996/49]
English:Process for the preparation of glycine-N,N-diacetic acid derivatives from the reaction of glycine derivatives or their precursors with formaldehyde and an alkalimetal cyanide in an acidic aqueous medium[1996/49]
French:Procédé pour la préparation de dérivés de glycine-N,N-diacétique par réaction de dérivés de la glycine ou de leurs précurseurs avec le formaldéhyde et du cyanure de métal alcalin dans un milieu acide aqueux[1996/49]
Examination procedure31.10.1997Examination requested  [1998/02]
05.10.1998Despatch of a communication from the examining division (Time limit: M06)
07.04.1999Reply to a communication from the examining division
16.07.1999Despatch of communication of intention to grant (Approval: Yes)
21.09.1999Communication of intention to grant the patent
23.10.1999Fee for grant paid
23.10.1999Fee for publishing/printing paid
Opposition(s)06.01.2001No opposition filed within time limit [2001/12]
Fees paidRenewal fee
26.05.1998Renewal fee patent year 03
28.05.1999Renewal fee patent year 04
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Patent Court		 See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipBE31.05.2000
DK05.07.2000
[2003/46]
Former [2001/22]BE31.05.2000
Documents cited:Search[A]DE4319935  (BASF AG [DE]) [A] 1-3 * page 6 - page 8 *;
 [D]WO9429421  (BASF AG [DE], et al);
 [A]EP0287885  (BASF AG [DE]) [A] 1-3 * examples 1-3; claims 1-3 *;
 [AD]DE2027972  (W.R. GRACE & CO) [AD] 1 * page 4 - page 8 *;
 [AD]US3733355  (HARRIS E, et al) [AD] 1 * column W *;
 [AD]US2500019  (BERSWORTH FREDERICK C) [AD] 1 * column 3 - column 5 *
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.