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EP0079005
European procedure
Extract from the Register of European Patents
EP About this file: EP0079005
| EP0079005 - Process for the preparation of carboxylic acid anhydrides [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 14.01.1987 Database last updated on 02.11.2024 | Most recent event Tooltip | 07.02.1989 | Lapse of the patent in a contracting state | published on 29.03.1989 [1989/13] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1983/20] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Findeisen, Kurt, Dr. In der Follmühle 10 D-5068 Odenthal 2 / DE | [1983/20] | Application number, filing date | 82109998.3 | 29.10.1982 | [1983/20] | Priority number, date | DE19813144791 | 11.11.1981 Original published format: DE 3144791 | [1983/20] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0079005 | Date: | 18.05.1983 | Language: | DE | [1983/20] | Type: | B1 Patent specification | No.: | EP0079005 | Date: | 26.02.1986 | Language: | DE | [1986/09] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 15.03.1983 | Classification | IPC: | C07C51/56, C07C63/06, C07C61/08, C07C63/70, C07C53/12, C07C53/122, C07C53/128, C07C79/46, C07D307/54, C07C65/21 | [1983/20] | CPC: |
C07C51/56 (EP,US);
C07C201/12 (EP,US);
C07D307/68 (EP,US);
C07C2601/14 (EP,US)
| C-Set: |
C07C201/12, C07C205/57 (EP,US);
C07C51/56, C07C53/12, C07C53/122, C07C53/128, C07C63/70, C07C65/24 (US,EP) | Designated contracting states | AT, BE, CH, DE, FR, GB, IT, LI, NL [1983/20] | Title | German: | Verfahren zur Herstellung von Carbonsäureanhydriden | [1983/20] | English: | Process for the preparation of carboxylic acid anhydrides | [1983/20] | French: | Procédé de préparation d'anhydrides d'acides carboxyliques | [1983/20] | Examination procedure | 29.10.1982 | Examination requested [1983/20] | 06.11.1984 | Despatch of a communication from the examining division (Time limit: M04) | 27.02.1985 | Reply to a communication from the examining division | 03.05.1985 | Despatch of communication of intention to grant (Approval: ) | 13.08.1985 | Communication of intention to grant the patent | 17.08.1985 | Fee for grant paid | 17.08.1985 | Fee for publishing/printing paid | Opposition(s) | 27.11.1986 | No opposition filed within time limit [1987/10] | Fees paid | Renewal fee | 20.09.1984 | Renewal fee patent year 03 | 18.09.1985 | Renewal fee patent year 04 |
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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. | Lapses during opposition Tooltip | AT | 29.10.1986 | [1989/13] | Documents cited: | Search | [A]DE171146 ; | [A]DE394730 (CONSORTIUM ELEKTROCHEM IND) | [Y] - JOURNAL OF THE CHEMICAL SOCIETY, PERKIN TRANSACTIONS 1, Nr. 5, 1976, Seiten 564-569, | [Y] - CHEMICAL ABSTRACTS, Band 62, Nr. 3, 1. Februar 1965, Spalte 2700e, Columbus, Ohio, USA |