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Extract from the Register of European Patents

EP About this file: EP0476359

EP0476359 - Process for the production of di-(4-aminocyclohexyl)-methane with a proportion of 15-25% by weight of trans-trans isomers [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  30.07.1994
Database last updated on 02.11.2024
Most recent event   Tooltip30.07.1994No opposition filed within time limitpublished on 21.09.1994 [1994/38]
Applicant(s)For all designated states
BAYER AG
51368 Leverkusen / DE
[N/P]
Former [1992/13]For all designated states
BAYER AG
D-51368 Leverkusen / DE
Inventor(s)01 / Immel, Otto, Dr.
Immenhofweg 26
W-4150 Krefeld / DE
02 / Darsow, Gerhard, Dr.
Zu den Tannen 39
W-4150 Krefeld / DE
03 / Braden, Rudolf, Dr.
Nothauserfeld 1
W-5068 Odenthal / DE
04 / Schwarz, Hans-Helmut, Dr.
Rather Strasse 90
W-4150 Krefeld 1 / DE
05 / Waldmann, Helmut, Dr.
Henry-Th.-v.-Böttinger-Strasse 15
W-5090 Leverkusen 1 / DE
[1992/13]
Application number, filing date91114225.524.08.1991
[1992/13]
Priority number, dateDE1990402827006.09.1990         Original published format: DE 4028270
[1992/13]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0476359
Date:25.03.1992
Language:DE
[1992/13]
Type: B1 Patent specification 
No.:EP0476359
Date:29.09.1993
Language:DE
[1993/39]
Search report(s)(Supplementary) European search report - dispatched on:EP14.01.1992
ClassificationIPC:C07C209/72, B01J23/46
[1992/13]
CPC:
B01J23/462 (EP); C07C209/72 (EP); C07C2601/14 (EP)
Designated contracting statesDE,   FR,   GB,   IT [1992/13]
TitleGerman:Verfahren zur Herstellung von Di-(4-aminocyclohexyl)-methan mit einem Anteil an 15 bis 25 Gew.-% des trans-trans-Isomeren[1992/13]
English:Process for the production of di-(4-aminocyclohexyl)-methane with a proportion of 15-25% by weight of trans-trans isomers[1992/13]
French:Procédé de préparation de di-(4-aminocyclohexyl)-methane à proportion entre 15 à 25% en poids d'isomères trans-trans[1992/13]
Examination procedure13.04.1992Examination requested  [1992/24]
01.02.1993Despatch of communication of intention to grant (Approval: Yes)
22.02.1993Communication of intention to grant the patent
06.05.1993Fee for grant paid
06.05.1993Fee for publishing/printing paid
Opposition(s)30.06.1994No opposition filed within time limit [1994/38]
Fees paidRenewal fee
13.07.1993Renewal 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[A]EP0351661  (BAYER AG [DE]);
 [AD]EP0324190  (HUELS CHEMISCHE WERKE AG [DE], et al);
 [A]DE1542392  (DU PONT);
 [A]EP0053819  (BASF AG [DE]);
 [AD]DE1593293  (DU PONT);
 [AD]US3644522  (BRAKE LOREN D, 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.