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Extract from the Register of European Patents

EP About this file: EP0025937

EP0025937 - Thermoplastic polycarbonates, process for their preparation, bis-halo-formates of hexahydro-furo (3,2-b) furan-3,6-diols, and polycarbonate compositions [Right-click to bookmark this link]
Former [1981/13]Thermoplastic polycarbonates, process for their preparation, bis-chloroformates of hexahydro-furo (3,2-b) furan-3,6-diols, and polycarbonate compositions
[1983/33]
StatusNo opposition filed within time limit
Status updated on  22.06.1984
Database last updated on 20.12.2024
Most recent event   Tooltip22.06.1984No opposition filed within time limitpublished on 22.08.1984 [1984/34]
Applicant(s)For all designated states
BAYER AG
51368 Leverkusen / DE
[N/P]
Former [1981/13]For all designated states
BAYER AG
D-51368 Leverkusen / DE
Inventor(s)01 / Medem, Harald, Dr.
Buschstrasse 167
D-4150 Krefeld / DE
02 / Schreckenberg, Manfred, Dr.
Dörperhofstrasse 15
D-4150 Krefeld / DE
03 / Dhein, Rolf, Dr.
Deswatinesstrasse 30
D-4150 Krefeld / DE
04 / Nouvertne, Werner, Dr.
Scheiblerstrasse 95
D-4150 Krefeld / DE
05 / Rudolph, Hans, Dr.
Haydnstrasse 9
D-4150 Krefeld / DE
[1981/13]
Application number, filing date80105385.109.09.1980
[1981/13]
Priority number, dateDE1979293846422.09.1979         Original published format: DE 2938464
[1981/13]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report 
No.:EP0025937
Date:01.04.1981
Language:DE
[1981/13]
Type: A3 Search report 
No.:EP0025937
Date:20.05.1981
Language:DE
[1981/20]
Type: B1 Patent specification 
No.:EP0025937
Date:17.08.1983
Language:DE
[1983/33]
Search report(s)(Supplementary) European search report - dispatched on:EP19.03.1981
ClassificationIPC:C08G63/62, C08L69/00, C07D493/04
[1983/33]
CPC:
C08G64/28 (EP,US); C08G64/1608 (EP,US); C08L69/00 (EP,US)
C-Set:
C08L69/00, C08L2666/14 (US,EP);
C08L69/00, C08L69/00 (EP,US)
Former IPC [1981/13]C08G63/62, C08G63/66, C08L69/00, C07D493/04
Designated contracting statesDE,   FR,   GB,   IT,   NL [1981/13]
TitleGerman:Thermoplastische Polycarbonate, Verfahren zu ihrer Herstellung, Bis-halogen-kohlensäureester von Hexahydro-furo(3,2-b) furan-3,6-diolen, sowie Polycarbonatmassen[1983/33]
English:Thermoplastic polycarbonates, process for their preparation, bis-halo-formates of hexahydro-furo (3,2-b) furan-3,6-diols, and polycarbonate compositions[1983/33]
French:Polycarbonates thermoplastiques, procédé pour leur préparation, bis-halo-formates d'hexahydro-furo (3,2-b) furane-3,6-dioles, et compositions à base de polycarbonates[1983/33]
Former [1981/13]Thermoplastische Polycarbonate, Verfahren zu ihrer Herstellung, Bis-chlorkohlensäureester von Hexahydro-furo(3,2-b) furan-3,6-diolen, sowie Polycarbonatmassen
Former [1981/13]Thermoplastic polycarbonates, process for their preparation, bis-chloroformates of hexahydro-furo (3,2-b) furan-3,6-diols, and polycarbonate compositions
Former [1981/13]Polycarbonates thermoplastiques, procédé pour leur préparation, bis-chloroformates d'hexahydro-furo (3,2-b) furane-3,6-dioles, et compositions à base de polycarbonates
Examination procedure09.09.1980Examination requested  [1981/13]
30.11.1981Despatch of a communication from the examining division (Time limit: M02)
09.12.1981Reply to a communication from the examining division
28.01.1982Despatch of communication that the application is refused, reason: substantive examination {1}
29.10.1982Despatch of communication of intention to grant (Approval: )
28.01.1983Communication of intention to grant the patent
02.02.1983Fee for grant paid
02.02.1983Fee for publishing/printing paid
Appeal following examination01.03.1982Appeal received No.  T0057/82
01.03.1982Statement of grounds filed
Opposition(s)18.05.1984No opposition filed within time limit [1984/34]
Fees paidRenewal fee
16.09.1982Renewal fee patent year 03
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Documents cited:Search[D]GB1079686  (COURTAULDS LTD)
    [ ] - ENCYCLOPEDIA OF POLYMER SCIENCE AND TECHNOLOGY, Band 10, 1969, Interscience, Seite 726 New York, US,
    [ ] - HOUBEN-WEYL: "Methoden der organischen Chemie", Band XIV/2, 1963, Thieme Verlag, Seiten 53,54 Stuttgart, DE,
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.