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EP0054817
European procedure
Extract from the Register of European Patents
EP About this file: EP0054817
| EP0054817 - Process for the continuous thermal decomposition of esters of carbamic acids and use of mixtures of esters of carbamic acids and isocyanates obtained by this process for the preparation of isocyanates [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 17.12.1984 Database last updated on 28.03.2026 | Most recent event Tooltip | 17.12.1984 | No opposition filed within time limit | published on 20.02.1985 [1985/08] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1982/26] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
König, Klaus, Dr. Heymannstrasse 50 D-5090 Leverkusen / DE | 02 /
Heitkämper, Peter, Dr. Fliederweg 14 D-4047 Dormagen 11 / DE | [1982/26] | Application number, filing date | 81110204.5 | 07.12.1981 | [1982/26] | Priority number, date | DE19803047898 | 19.12.1980 Original published format: DE 3047898 | [1982/26] | Filing language | DE | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0054817 | Date: | 30.06.1982 | Language: | DE | [1982/26] | Type: | A3 Search report | No.: | EP0054817 | Date: | 18.08.1982 | Language: | DE | [1982/33] | Type: | B1 Patent specification | No.: | EP0054817 | Date: | 15.02.1984 | Language: | DE | [1984/07] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 16.06.1982 | Classification | IPC: | C07C118/00, C07C119/042 | [1982/26] | CPC: |
C07C263/04 (EP,US);
C07C2601/14 (EP,US);
Y02P20/582 (EP,US)
| C-Set: |
C07C263/04, C07C265/04 (US,EP);
C07C263/04, C07C265/10 (EP,US);
C07C263/04, C07C265/12 (US,EP)
| Designated contracting states | BE, CH, DE, FR, GB, IT, LI [1982/26] | Title | German: | Verfahren zur kontinuierlichen thermischen Spaltung von Carbamidsäureestern und die Verwendung von hierbei anfallenden Isocyanate und Carbamidsäureester aufweisenden Gemischen zur Herstellung von Isocyanaten | [1982/26] | English: | Process for the continuous thermal decomposition of esters of carbamic acids and use of mixtures of esters of carbamic acids and isocyanates obtained by this process for the preparation of isocyanates | [1982/26] | French: | Procédé de décomposition thermique en continu d'esters d'acides carbamiques et l'utilisation de mélanges d'esters d'acides carbamiques et d'isocyanates obtenus dans ce procédé pour la préparation d'isocyanates | [1982/26] | Examination procedure | 07.12.1981 | Examination requested [1982/26] | 29.12.1982 | Despatch of a communication from the examining division (Time limit: M04) | 21.02.1983 | Reply to a communication from the examining division | 09.05.1983 | Despatch of communication of intention to grant (Approval: ) | 02.08.1983 | Communication of intention to grant the patent | 08.08.1983 | Fee for grant paid | 08.08.1983 | Fee for publishing/printing paid | Opposition(s) | 16.11.1984 | No opposition filed within time limit [1985/08] | Fees paid | Renewal fee | 28.11.1983 | Renewal fee patent year 03 |
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