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EP0001761
European procedure
Extract from the Register of European Patents
EP About this file: EP0001761
| EP0001761 - Process for the purification of tetrahydrofuran [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 14.09.2016 Database last updated on 30.04.2025 | Most recent event Tooltip | 14.09.2016 | No opposition filed within time limit | Applicant(s) | For all designated states BASF Aktiengesellschaft Carl-Bosch-Strasse 38 67063 Ludwigshafen / DE | [N/P] | Inventor(s) | 01 /
Mueller, Herbert, Dr. Carostrasse 53 D-6710 Frankenthal / DE | 02 /
Huchler, Otto Hermann, Dr. Weinbietstrasse 38 D-6703 Limburgerhof / DE | [N/P] | Application number, filing date | 78101096.2 | 07.10.1978 | Priority number, date | DE19772748788 | 31.10.1977 Original published format: DE 2748788 | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0001761 | Date: | 16.05.1979 | Language: | DE | [N/P] | Type: | B1 Patent specification | No.: | EP0001761 | Date: | 01.10.1980 | Language: | DE | [1980/20] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 01.03.1979 | Classification | IPC: | C07D307/08 | [1980/20] | CPC: |
C07D307/08 (EP,US)
| Designated contracting states | BE, DE, FR, GB, NL | Title | German: | Verfahren zur Reinigung von Tetrahydrofuran | English: | Process for the purification of tetrahydrofuran | French: | Procédé de purification de tétrahydrofuranne | File destroyed: | 12.06.1999 | Examination procedure | 25.05.1979 | Examination requested | 19.09.1979 | Despatch of a communication from the examining division (Time limit: M03) | 17.12.1979 | Reply to a communication from the examining division | 20.03.1980 | Despatch of communication of intention to grant (Approval: ) | 18.04.1980 | Communication of intention to grant the patent | 14.06.1980 | Fee for grant paid | 14.06.1980 | Fee for publishing/printing paid | Opposition(s) | 02.03.1982 | No opposition filed within time limit [ N /P ] |
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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 | DE1272293 [ ] (NAGYNYOMASU KISERLETI INTEZET); | DE1693053 [ ] (DEGUSSA); | DD31929 [ ]; | [A]US3935252 (TOMOMATSU HIDEO); | [AD]US3980672 (TOMOMATSU HIDEO); | [D]JPS495338B | [D] - CHEMICAL ABSTRACTS, vol. 81, no. 21, 25 November 1974, Columbus, Ohio, (USA) M. YAMAGUCHI et al: "Separation of tetrahydrofuran and methanol", Seite 405, Kolonne 2Abstract Nr. 135933z; & JP-B-49 005 338 (MITSUBISHI) (06-02-1974) | [A] - BEILSTEINS HANDBUCH DER ORGANISCHEN CHEMIE, Band 17, 1 Teil, 4. Auflage, 3. und 4. Erg{nzungswerk, 1974, Springer-Verlag Berlin, HeidelbergNew York. Seite 25 |