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Extract from the Register of European Patents

EP About this file: EP0652201

EP0652201 - Process for the production of concentrated aqueous formaldehyde solutions by pervaporation [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  17.08.1995
Database last updated on 30.09.2024
Most recent event   Tooltip17.08.1995Withdrawal of applicationpublished on 04.10.1995 [1995/40]
Applicant(s)For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
67063 Ludwigshafen / DE
[N/P]
Former [1995/19]For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
D-67063 Ludwigshafen / DE
Inventor(s)01 / Dams, Albrecht, Dr.
Bornweg 19
D-67157 Wachenheim / DE
02 / Fried, Andreas, Dr.
Johannes-Brahms-Strasse 7
D-67240 Bobenheim-Roxheim / DE
03 / Hammann, Fredy
Haardtstrasse 15
D-67256 Weisenheim / DE
[1995/19]
Application number, filing date94116513.620.10.1994
[1995/19]
Priority number, dateDE1993433723130.10.1993         Original published format: DE 4337231
[1995/19]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0652201
Date:10.05.1995
Language:DE
[1995/19]
Search report(s)(Supplementary) European search report - dispatched on:EP21.12.1994
ClassificationIPC:C07C45/79, C07C45/78, C07C47/04
[1995/19]
CPC:
B01D61/362 (EP,US); C07C45/786 (EP)
C-Set:
C07C45/786, C07C47/04 (EP)
Designated contracting statesAT,   BE,   CH,   DE,   ES,   FR,   GB,   IT,   LI,   NL [1995/19]
TitleGerman:Verfahren zur Gewinnung konzentrierter wässriger Formaldehydlösungen durch Pervaporation[1995/19]
English:Process for the production of concentrated aqueous formaldehyde solutions by pervaporation[1995/19]
French:Procédé d'obtention de solutions concentrées aqueuses de formaldéhyde par pervaporation[1995/19]
File destroyed:03.03.2001
Examination procedure23.02.1995Examination requested  [1995/19]
30.05.1995Application withdrawn by applicant  [1995/40]
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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[X]US3750735  (CHIANG R, et al);
 [X]US3950247  (CHIANG ROBERT, et al);
 [Y]EP0372683  (TEXACO DEVELOPMENT CORP [US]);
 [Y]US4978430  (NAKAGAWA KANJI [JP], et al)
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.