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Extract from the Register of European Patents

EP About this file: EP0492243

EP0492243 - Process for separating polycarbonates from their solution, using fluids containing carbon dioxide [Right-click to bookmark this link]
Former [1992/27]Process for separating polymers from their solution, using fluids containing carbon dioxide
[1996/34]
StatusNo opposition filed within time limit
Status updated on  27.06.1997
Database last updated on 22.08.2024
Most recent event   Tooltip27.06.1997No opposition filed within time limitpublished on 13.08.1997 [1997/33]
Applicant(s)For all designated states
BAYER AG
51368 Leverkusen / DE
[N/P]
Former [1992/27]For all designated states
BAYER AG
D-51368 Leverkusen / DE
Inventor(s)01 / Paul, Hanns-Ingolf, Dr.
Hahnenweg 3
W-5000 Köln 80 / DE
02 / Treckmann, Rolf, Dipl.-Ing.
Buschfeldstrasse 2
W-5000 Köln 80 / DE
03 / Weymans, Günther, Dr.
Körnerstrasse 5
W-5090 Leverkusen / DE
04 / Kirsch, Jürgen, Dr.
Völklingerstrasse 20
W-5090 Leverkusen / DE
05 / Heuser, Jürgen, Dr.
Minkweg 29a
W-4150 Krefeld / DE
06 / Elgeti, Klaus, Prof. Dr.
Am Hermannshof 8
W-5060 Bergisch Gladbach 2 / DE
[1992/27]
Application number, filing date91121060.709.12.1991
[1992/27]
Priority number, dateDE1990404085520.12.1990         Original published format: DE 4040855
DE1991411823004.06.1991         Original published format: DE 4118230
[1992/27]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report 
No.:EP0492243
Date:01.07.1992
Language:DE
[1992/27]
Type: A3 Search report 
No.:EP0492243
Date:27.01.1993
Language:DE
[1993/04]
Type: B1 Patent specification 
No.:EP0492243
Date:21.08.1996
Language:DE
[1996/34]
Search report(s)(Supplementary) European search report - dispatched on:EP04.12.1992
ClassificationIPC:C08J11/06
[1996/34]
CPC:
C08G85/00 (EP,US); C08G63/89 (EP,US); C08G64/403 (EP,US)
Former IPC [1993/04]C08G85/00, C08G64/40, C08G75/02
Former IPC [1992/27]C08G85/00
Designated contracting statesBE,   DE,   ES,   FR,   GB,   IT,   NL [1992/27]
TitleGerman:Verfahren zur Isolierung von Polycarbonaten aus ihren Lösungsmitteln mit Kohlendioxid-haltigen Flüssigkeiten[1996/34]
English:Process for separating polycarbonates from their solution, using fluids containing carbon dioxide[1996/34]
French:Procédé de séparation de polycarbonates en solution, avec des fluides renfermant du dioxyde de carbone[1996/34]
Former [1992/27]Verfahren zur Isolierung von Polymeren aus ihren Lösungsmitteln mit Kohlendioxid-haltigen Flüssigkeiten
Former [1992/27]Process for separating polymers from their solution, using fluids containing carbon dioxide
Former [1992/27]Procédé de séparation de polymères en solution, avec des fluides renfermant du dioxyde de carbone
Examination procedure26.04.1993Examination requested  [1993/25]
29.12.1994Despatch of a communication from the examining division (Time limit: M06)
12.05.1995Reply to a communication from the examining division
16.10.1995Despatch of a communication from the examining division (Time limit: M04)
24.11.1995Reply to a communication from the examining division
17.01.1996Despatch of communication of intention to grant (Approval: Yes)
31.01.1996Communication of intention to grant the patent
14.03.1996Fee for grant paid
14.03.1996Fee for publishing/printing paid
Opposition(s)22.05.1997No opposition filed within time limit [1997/33]
Fees paidRenewal fee
19.11.1993Renewal fee patent year 03
14.11.1994Renewal fee patent year 04
27.11.1995Renewal 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]EP0334314  (MITSUBISHI GAS CHEMICAL CO [JP]);
 [X]EP0184935
 [X]  - MACROMOLECULES Bd. 18, 1. April 1985, Seiten 674 - 680 MCHUGH 'separating polymer solutions with supercritical fluids'
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.