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Extract from the Register of European Patents

EP About this file: EP0792867

EP0792867 - Process for the purification of acrylic and methacrylic acid [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  15.04.2003
Database last updated on 03.01.2025
Most recent event   Tooltip27.06.2008Change - applicantpublished on 30.07.2008  [2008/31]
Applicant(s)For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
67063 Ludwigshafen / DE
[2008/31]
Former [2002/23]For all designated states
BASF AKTIENGESELLSCHAFT
67056 Ludwigshafen / DE
Former [1997/36]For all designated states
BASF AKTIENGESELLSCHAFT
67056 Ludwigshafen / DE
Inventor(s)01 / Machhammer, Otto, Dr.
Schwarzwaldstr. 25
68163 Mannheim / DE
02 / Dams, Albrecht, Dr.
Dr.-Hans-Hoffmann-Strasse 13
67157 Wachenheim / DE
03 / Eck, Bernd
Stahlstrasse 11
68519 Viernheim / DE
04 / Proll, Theo, Dr.
Robert-Stolz-Strasse 4
67098 Bad Dürkheim / DE
[1997/36]
Representative(s)Isenbruck, Günter, et al
Patentanwälte
Isenbruck Bösl Hörschler PartG mbB
Eastsite One
Seckenheimer Landstrasse 4
68163 Mannheim / DE
[N/P]
Former [1997/36]Isenbruck, Günter, Dr., et al
Patent- und Rechtsanwälte Bardehle-Pagenberg-Dost-Altenburg-Frohwitter-Geissler & Partner Theodor-Heuss-Anlage 12
68165 Mannheim / DE
Application number, filing date97102813.920.02.1997
[1997/36]
Priority number, dateDE1996100687723.02.1996         Original published format: DE 19606877
[1997/36]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report 
No.:EP0792867
Date:03.09.1997
Language:DE
[1997/36]
Type: A3 Search report 
No.:EP0792867
Date:07.01.1998
[1998/02]
Type: B1 Patent specification 
No.:EP0792867
Date:05.06.2002
Language:DE
[2002/23]
Search report(s)(Supplementary) European search report - dispatched on:EP13.11.1997
ClassificationIPC:C07C57/07, C07C57/05
[1997/36]
CPC:
C07C51/43 (EP,US)
C-Set:
C07C51/43, C07C57/04 (EP,US)
Designated contracting statesBE,   DE,   DK,   ES,   FR,   GB,   IT,   NL [1997/36]
TitleGerman:Verfahren zur Reinigung von Acrylsäure und Methacrylsäure[1997/36]
English:Process for the purification of acrylic and methacrylic acid[1997/36]
French:Procédé de purification de l'acide acrylique et méthacrylique[1997/36]
Examination procedure06.07.1998Examination requested  [1998/36]
06.08.1999Despatch of a communication from the examining division (Time limit: M06)
19.01.2000Reply to a communication from the examining division
24.02.2000Despatch of a communication from the examining division (Time limit: M06)
04.08.2000Reply to a communication from the examining division
28.02.2001Despatch of communication of intention to grant (Approval: No)
28.06.2001Despatch of communication of intention to grant (Approval: later approval)
01.10.2001Communication of intention to grant the patent
28.11.2001Fee for grant paid
28.11.2001Fee for publishing/printing paid
Opposition(s)06.03.2003No opposition filed within time limit [2003/22]
Fees paidRenewal fee
24.02.1999Renewal fee patent year 03
23.02.2000Renewal fee patent year 04
20.02.2001Renewal fee patent year 05
15.02.2002Renewal fee patent year 06
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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  TooltipGB05.06.2002
IT05.06.2002
DK05.09.2002
ES20.12.2002
[2008/07]
Former [2004/04]GB05.06.2002
DK05.09.2002
ES20.12.2002
Former [2003/46]GB05.06.2002
DK05.09.2002
Former [2003/17]GB05.06.2002
Documents cited:Search[A]DE2136396  (BASF AG) [A] 8-10* examples 1-3; claim 2 *;
 [A]EP0616998  (SULZER CHEMTECH AG [CH]) [A] 1-7 * the whole document *;
 [X]EP0675100  (ROHM & HAAS [US]) [X] 1-10 * page 4, line 32 - line 35; claim 1 *
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.