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EP0023571
European procedure
Extract from the Register of European Patents
EP About this file: EP0023571
| EP0023571 - Process for preparing polycarbonates, the polycarbonates obtainable thereby and their use [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 14.09.2016 Database last updated on 31.08.2024 | Most recent event Tooltip | 14.09.2016 | No opposition filed within time limit | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1981/06] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Friedhofen, Gerhard, Dr. Holzapfelweg 3 D-4150 Krefeld / DE | 02 /
Serini, Volker, Dr. Scheiblerstrasse 81 D-4150 Krefeld / DE | 03 /
Neumann, Rainer, Dr. Bodelschwinghstrasse 16 D-4150 Krefeld / DE | 04 /
Freitag, Dieter, Dr. Hasenheide 10 D-4150 Krefeld / DE | 05 /
Schwarz, Hans-Helmut, Dr. Ratherstrasse 90 D-4150 Krefeld / DE | [1981/06] | Application number, filing date | 80103697.1 | 30.06.1980 | [1981/06] | Priority number, date | DE19792928464 | 13.07.1979 Original published format: DE 2928464 | [1981/06] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0023571 | Date: | 11.02.1981 | Language: | DE | [1981/06] | Type: | B1 Patent specification | No.: | EP0023571 | Date: | 12.01.1983 | Language: | DE | [1983/02] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 01.12.1980 | Classification | IPC: | C08G63/62, C07C37/74, C08L69/00 | [1981/06] | CPC: |
C08G64/24 (EP,US);
C07C37/20 (EP,US);
C07C37/74 (EP,US);
C08G64/06 (EP,US);
C08L69/00 (EP,US)
| C-Set: |
C07C37/20, C07C39/16 (US,EP);
C07C37/74, C07C39/16 (US,EP);
C08L69/00, C08L2666/02 (US,EP);
C08L69/00, C08L69/00, C08L27/06, C08L25/04 (EP,US) | Designated contracting states | DE, FR, GB, IT, NL [1981/06] | Title | German: | Verfahren zur Herstellung von Polycarbonaten, die so erhältlichen Polycarbonate sowie ihre Verwendung | [1981/06] | English: | Process for preparing polycarbonates, the polycarbonates obtainable thereby and their use | [1981/06] | French: | Procédé de préparation de polycarbonates, les polycarbonates ainsi obtenus ainsi que leur utilisation | [1981/06] | Examination procedure | 30.06.1980 | Examination requested [1981/06] | 18.08.1981 | Despatch of a communication from the examining division (Time limit: M04) | 26.11.1981 | Reply to a communication from the examining division | 14.04.1982 | Despatch of communication of intention to grant (Approval: ) | 12.07.1982 | Communication of intention to grant the patent | 19.07.1982 | Fee for grant paid | 19.07.1982 | Fee for publishing/printing paid | Opposition(s) | 12.10.1983 | No opposition filed within time limit [ N /P ] | Fees paid | Renewal fee | 15.06.1982 | Renewal 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 | [XD]DE2063050 (BAYER); | GB1052618 [ ]; | DD57133 [ ]; | [D]DE2402176 (BAYER AG); | [D]DE2329585 (BAYER AG) |