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EP0028345
European procedure
Extract from the Register of European Patents
EP About this file: EP0028345
| EP0028345 - Method of preparing thermoplastic aromatic polyphosphonates with thermal ageing resistance, and their use [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 14.08.1984 Database last updated on 15.06.2024 | Most recent event Tooltip | 14.08.1984 | No opposition filed within time limit | published on 17.10.1984 [1984/42] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1981/19] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Schmidt, Manfred, Dr. c/o Mobay Chemical Corporation New Martinsville, VA, 26155 / US | 02 /
Freitag, Dieter, Dr. Hasenheide 10 D-4150 Krefeld 1 / DE | 03 /
Bottenbruch, Ludwig, Dr. Wöhlerstrasse 5 D-4150 Krefeld 1 / DE | [1981/19] | Application number, filing date | 80106384.3 | 20.10.1980 | [1981/19] | Priority number, date | DE19792944093 | 31.10.1979 Original published format: DE 2944093 | [1981/19] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0028345 | Date: | 13.05.1981 | Language: | DE | [1981/19] | Type: | B1 Patent specification | No.: | EP0028345 | Date: | 12.10.1983 | Language: | DE | [1983/41] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 03.03.1981 | Classification | IPC: | C08G79/04 | [1981/19] | CPC: |
C08G79/04 (EP,US)
| Designated contracting states | CH, DE, FR, GB, IT, LI [1981/19] | Title | German: | Verfahren zur Herstellung von thermoplastischen aromatischen Polyphosphonaten verbesserter thermischer Alterungsbeständigkeit und deren Verwendung | [1981/19] | English: | Method of preparing thermoplastic aromatic polyphosphonates with thermal ageing resistance, and their use | [1981/19] | French: | Procédé de préparation de polyphosphonates thermoplastiques aromatiques à résistance à l'altération thermique et leur utilisation | [1981/19] | Examination procedure | 20.10.1980 | Examination requested [1981/29] | 30.12.1981 | Despatch of a communication from the examining division (Time limit: M04) | 08.03.1982 | Reply to a communication from the examining division | 04.01.1983 | Despatch of communication of intention to grant (Approval: ) | 31.03.1983 | Communication of intention to grant the patent | 13.04.1983 | Fee for grant paid | 13.04.1983 | Fee for publishing/printing paid | Opposition(s) | 13.07.1984 | No opposition filed within time limit [1984/42] | Fees paid | Renewal fee | 15.10.1982 | 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 | US2682522 [ ] (COOVER JR HARRY W, et al); | US3271329 [ ] (COOVER JR HARRY W, et al) |