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EP0065356
European procedure
Extract from the Register of European Patents
EP About this file: EP0065356
| EP0065356 - A method for purification of cyclopentenolones [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 10.06.1986 Database last updated on 28.03.2026 | Most recent event Tooltip | 10.06.1986 | No opposition filed within time limit | published on 30.07.1986 [1986/31] | Applicant(s) | For all designated states Sumitomo Chemical Company, Limited 5-33, Kitahama 4-chome Chuo-ku Osaka 541-8550 / JP | [N/P] |
| Former [1982/47] | For all designated states SUMITOMO CHEMICAL COMPANY, LIMITED Kitahama 4-chome 5-33 Chuo-ku Osaka 541 / JP | Inventor(s) | 01 /
Fujita, Fumio 2-1, Kuwatacho Ibaraki-shi Osaka / JP | [1982/47] | Representative(s) | Myerscough, Philip Boyd, et al J.A.KEMP & CO. 14, South Square Gray's Inn London WC1R 5LX / GB | [1982/47] | Application number, filing date | 82302024.3 | 20.04.1982 | [1982/47] | Priority number, date | JP19810066682 | 30.04.1981 Original published format: JP 6668281 | [1982/47] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0065356 | Date: | 24.11.1982 | Language: | EN | [1982/47] | Type: | B1 Patent specification | No.: | EP0065356 | Date: | 07.08.1985 | Language: | EN | [1985/32] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 06.09.1982 | Classification | IPC: | C07C49/707, C07C45/79 | [1982/47] | CPC: |
C07C45/85 (EP,US)
| Designated contracting states | CH, DE, FR, GB, IT, LI, NL [1982/47] | Title | German: | Verfahren zur Reinigung von Cyclopentenolonen | [1982/47] | English: | A method for purification of cyclopentenolones | [1982/47] | French: | Procédé de purification de cyclopenténolones | [1982/47] | Examination procedure | 28.03.1983 | Examination requested [1983/23] | 08.12.1983 | Despatch of a communication from the examining division (Time limit: M04) | 17.04.1984 | Reply to a communication from the examining division | 31.07.1984 | Despatch of communication of intention to grant (Approval: ) | 24.10.1984 | Communication of intention to grant the patent | 10.12.1984 | Fee for grant paid | 10.12.1984 | Fee for publishing/printing paid | Opposition(s) | 08.05.1986 | No opposition filed within time limit [1986/31] | Fees paid | Renewal fee | 11.04.1984 | Renewal fee patent year 03 | 11.04.1985 | 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. | Documents cited: | Search | [Y] CS146826 | [Y] CS146939 | [Y] JP47042731 | [Y] Chemical Abstracts, vol. 78, no. 25, 25 June 1973, Columbus, Ohio, USA, V. KUBANEK et al.: "Isolation of lactems" page 405, column 1, abstract no. 159477t & CS-A 146826 | [Y] Chemical Abstracts, vol. 78, no. 25, 25 June 1973, Columbus, Ohio, USA, V. KUBANEK et al.: "Isolation of lactems" page 405, column 1, abstract no. 159478u & CS-A 146939 | [Y] Chemical Abstracts, vol. 78, no. 9, 5 March 1973, Columbus, Ohio, USA, T. INOUE et al.: "Purification of resorcinol" page 486, column 2, abstract no. 58026q & JP-A-47 042 731 [Y] | Examination | Chemical Abstracts vol. 78, no. 25, 25 June 1973, Columbus, Ohio, USA, W. KUBANEK et al. "Isolation of lactams" page 405, column 1, abstract no. 159478u | Chemical Abstracts vol. 78, no. 9, 5 March 1973, Columbus, Ohio, USA, T. INOUE et al. "Purification of resorcinol", page 486, column 2, abstract no. 58026q |