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Extract from the Register of European Patents

EP About this file: EP0591762

EP0591762 - Process for the preparation of polycarbonates and polyestercarbonates [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  03.01.1996
Database last updated on 19.10.2024
Most recent event   Tooltip03.01.1996Withdrawal of applicationpublished on 24.01.1996 [1996/04]
Applicant(s)For all designated states
BAYER AG
51368 Leverkusen / DE
[N/P]
Former [1994/15]For all designated states
BAYER AG
D-51368 Leverkusen / DE
Inventor(s)01 / Pakull, Ralf, Dr.
Am Braunsacker 80
D-50765 Köln / DE
02 / Fennhoff, Gerhard, Dr.
Buschstrasse 25
D-47877 Willich / DE
03 / Strüver, Werner, Dr.
Hans-Sachs-Strasse 4
D-51375 Leverkusen / DE
04 / Kirsch, Jürgen, Dr.
Völklinger Strasse 20
D-51375 Leverkusen / DE
[1994/15]
Application number, filing date93115259.922.09.1993
[1994/15]
Priority number, dateDE1992423334505.10.1992         Original published format: DE 4233345
[1994/15]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0591762
Date:13.04.1994
Language:DE
[1994/15]
Search report(s)(Supplementary) European search report - dispatched on:EP14.02.1994
ClassificationIPC:C08G64/24, C08G64/28, C08G63/82, C08G63/64
[1994/15]
CPC:
C08G64/24 (EP,US); C08G63/64 (EP,US); C08G64/28 (EP,US)
Designated contracting statesBE,   DE,   ES,   IT,   NL [1994/15]
TitleGerman:Verfahren zur Herstellung von Polycarbonaten und von Polyestercarbonaten[1994/15]
English:Process for the preparation of polycarbonates and polyestercarbonates[1994/15]
French:Procédé pour la préparation de polycarbonates et de polyestercarbonates[1994/15]
File destroyed:03.03.2001
Examination procedure14.09.1994Examination requested  [1994/45]
29.08.1995Despatch of a communication from the examining division (Time limit: M04)
30.11.1995Application withdrawn by applicant  [1996/04]
Fees paidRenewal fee
11.08.1995Renewal fee patent year 03
Opt-out from the exclusive  Tooltip
competence of the Unified
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.
Documents cited:Search[Y]US3254051  (SCHMITT JOHN A) [Y] 1,4 * claims 1-20 * * column 1, line 16 - line 50 * * column 3, line 32 - column 4, line 70 *;
 [Y]DE2211957  (BAYER AG) [Y] 1 * claim 2 * * page 2, paragraph 4 - page 3, paragraph 4 * * page 6, paragraph 2 - page 7, paragraph 1 *;
 [Y]EP0196429  (GEN ELECTRIC [US]) [Y] 2-4 * claim 7 * * page 5, line 14 - page 6, line 21 *;
 [Y]DE3346946  (BAYER AG [DE]) [Y] 3 * claim . * * page 6, line 20 - page 8, line 13 * * page 9, line 9 - page 10, line 3 *;
 [Y]EP0013904  (BAYER AG [DE]) [Y] 2 * claims 1-3 * * page 4, line 4 - line 11 * * page 9, line 5 - page 11, line 19 * * page 13, line 10 - line 19 *;
 [A]DE4030708  (BAYER AG [DE]) [A] 1 * claim . *;
 [DA]US3211775  (WAYNE STEPHENS CURTIS, et al) [DA] 1 * claims 1-7 * * column 2, line 31 - column 3, line 71 *;
 [A]US3143525  (OTTO JOHN B) [A] 1 * claim 1 * * column 5, line 15 - line 70 *;
 [A]US4612386  (RENGA JAMES M [US]) [A] 1 * claims 1-15 * * column 1, line 58 - column 4, line 43 *
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.