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EP0025928
European procedure
Extract from the Register of European Patents
EP About this file: EP0025928
| EP0025928 - Process for preparing aromatic polycarbonates by the interfacial process [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 14.09.2016 Database last updated on 02.08.2024 | 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 [1981/13] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Hucks, Uwe Am Marienstift 30 D-4234 Alpen / DE | 02 /
Tresper, Erhard, Dr. Am Dahlerdyk 154 D-4150 Krefeld / DE | [1981/13] | Application number, filing date | 80105357.0 | 08.09.1980 | [1981/13] | Priority number, date | DE19792938109 | 20.09.1979 Original published format: DE 2938109 | [1981/13] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0025928 | Date: | 01.04.1981 | Language: | DE | [1981/13] | Type: | B1 Patent specification | No.: | EP0025928 | Date: | 13.04.1983 | Language: | DE | [1983/15] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 27.11.1980 | Classification | IPC: | C08G63/62 | [1981/13] | CPC: |
C08G64/24 (EP,US)
| Designated contracting states | DE, FR, GB, IT, NL [1981/13] | Title | German: | Verfahren zur Herstellung von aromatischen Polycarbonaten nach dem Phasengrenzflächenverfahren | [1981/13] | English: | Process for preparing aromatic polycarbonates by the interfacial process | [1981/13] | French: | Procédé de préparation de polycarbonates aromatiques selon le procédé à l'interface | [1981/13] | Examination procedure | 08.09.1980 | Examination requested [1981/13] | 13.05.1982 | Despatch of communication of intention to grant (Approval: ) | 09.08.1982 | Communication of intention to grant the patent | 16.08.1982 | Fee for grant paid | 16.08.1982 | Fee for publishing/printing paid | Opposition(s) | 14.01.1984 | No opposition filed within time limit [ N /P ] | Fees paid | Renewal fee | 16.09.1982 | 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 | [D]US3035020 (FRY JOHN S) |