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Extract from the Register of European Patents

EP About this file: EP0445602

EP0445602 - Process for the preparation of mixtures of diphenylmethane-diisocyanates and polyphenylmethylene-polyisocyanates with a reduced iodic colorimetric measure [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  08.03.1996
Database last updated on 02.09.2024
Most recent event   Tooltip08.03.1996No opposition filed within time limitpublished on 24.04.1996 [1996/17]
Applicant(s)For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
67063 Ludwigshafen / DE
[N/P]
Former [1991/37]For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
D-67063 Ludwigshafen / DE
Inventor(s)01 / Scherzer, Dietrich, Dr.
Prager Strasse 33
W-6700 Ludwigshafen / DE
02 / Minges, Roland, Dr.
Auf der Setz 23
W-6718 Gruenstadt / DE
03 / Langer, Werner, Dr.
Wittelsbachstrasse 41
W-6700 Ludwigshafen / DE
04 / Bruchmann, Bernd, Dr.
Giselherstrasse 79
W-6700 Ludwigshafen / DE
05 / Heider, Wolfgang
Albert-Einstein-Allee 16
W-6703 Limburgerhof / DE
06 / Keller, Peter, Dr.
Brunnengasse 24
W-6940 Weinheim / DE
07 / Schmitt, Arnold
Burgunderstrasse 13
W-6701 Friedelsheim / DE
08 / Van Pee, Willy, Dr.
Bunderbeeklaan 18
B-2080 Kapellen / BE
[1991/37]
Application number, filing date91102593.022.02.1991
[1991/37]
Priority number, dateDE1990400697606.03.1990         Original published format: DE 4006976
[1991/37]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report 
No.:EP0445602
Date:11.09.1991
Language:DE
[1991/37]
Type: A3 Search report 
No.:EP0445602
Date:15.04.1992
Language:DE
[1992/16]
Type: B1 Patent specification 
No.:EP0445602
Date:03.05.1995
Language:DE
[1995/18]
Search report(s)(Supplementary) European search report - dispatched on:EP24.02.1992
ClassificationIPC:C07C263/20, C07C265/14
[1995/18]
CPC:
C07C263/18 (EP,US); C08L79/00 (KR); C07C263/20 (EP,US)
C-Set:
C07C263/18, C07C265/14 (EP,US);
C07C263/20, C07C265/14 (US,EP)
Former IPC [1991/37]C07C265/14
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   IT,   LI,   NL,   SE [1991/37]
TitleGerman:Verfahren zur Herstellung von Mischungen aus Diphenylmethan-diisocyanaten und Polyphenyl-polymethylen-polyisocyanaten mit einer verminderten Iodfarbzahl[1991/37]
English:Process for the preparation of mixtures of diphenylmethane-diisocyanates and polyphenylmethylene-polyisocyanates with a reduced iodic colorimetric measure[1991/37]
French:Procédé pour la préparation de mélanges comprenant des diphénylméthane-diisocyanates et des polyphénylméthylène-polyisocyanates ayant une mesure colorimétrique à base d'iode réduite[1991/37]
Examination procedure10.09.1992Examination requested  [1992/46]
19.01.1994Despatch of a communication from the examining division (Time limit: M04)
04.05.1994Reply to a communication from the examining division
29.06.1994Despatch of communication of intention to grant (Approval: No)
10.10.1994Despatch of communication of intention to grant (Approval: later approval)
19.10.1994Communication of intention to grant the patent
09.11.1994Fee for grant paid
09.11.1994Fee for publishing/printing paid
Opposition(s)06.02.1996No opposition filed within time limit [1996/17]
Fees paidRenewal fee
16.02.1993Renewal fee patent year 03
17.02.1994Renewal fee patent year 04
25.02.1995Renewal fee patent year 05
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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]GB1014043  (ICI LTD);
 [X]GB1042858  (ALLIED CHEM);
 [A]US3644457  (KONIG KLAUS, et al);
 [X]DE2804375  (MOBAY CHEMICAL CORP)
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.