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EP0458643
European procedure
Extract from the Register of European Patents
EP About this file: EP0458643
| EP0458643 - Process for preparing an optically active cyclobutanone, an intermediate in the synthesis of an optically active cyclobutane nucleoside [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 04.10.1996 Database last updated on 19.10.2024 | Most recent event Tooltip | 04.10.1996 | No opposition filed within time limit | published on 20.11.1996 [1996/47] | Applicant(s) | For all designated states E.R. SQUIBB & SONS, INC. Lawrenceville-Princeton Road Princeton New Jersey 08543-4000 / US | [N/P] |
| Former [1991/48] | For all designated states E.R. SQUIBB & SONS, INC. Lawrenceville-Princeton Road Princeton New Jersey 08543-4000 / US | Inventor(s) | 01 /
Ahmad, Saleem 24-16 Hunters Glen Drive Plainsboro, New Jersey 08536 / US | [1991/48] | Representative(s) | Thomas, Roger Tamlyn D. Young & Co. 21 New Fetter Lane London EC4A 1DA / GB | [1991/48] | Application number, filing date | 91304697.5 | 23.05.1991 | [1991/48] | Priority number, date | US19900528626 | 24.05.1990 Original published format: US 528626 | [1991/48] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0458643 | Date: | 27.11.1991 | Language: | EN | [1991/48] | Type: | A3 Search report | No.: | EP0458643 | Date: | 16.06.1993 | Language: | EN | [1993/24] | Type: | B1 Patent specification | No.: | EP0458643 | Date: | 29.11.1995 | Language: | EN | [1995/48] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 23.04.1993 | Classification | IPC: | C07C67/347, C07C69/757, C07C69/78, C07D307/32, C07D317/24, C07C67/29 | [1993/22] | CPC: |
C07D307/33 (EP);
C07C45/42 (KR);
C07C67/347 (EP);
C07C69/757 (EP);
C07C69/78 (EP);
C07D317/24 (EP);
Y02P20/55 (EP)
(-)
| C-Set: |
C07C67/347, C07C69/757 (EP)
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| Former IPC [1991/48] | C07C67/29, C07C69/78, C07C69/757, C07D307/32, C07D317/24 | Designated contracting states | AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LI, LU, NL, SE [1991/48] | Title | German: | Verfahren zur Herstellung von optisch-aktivem Cyclobutanon, ein Zwischenprodukt in der Synthese von optisch-aktiven Cyclobutannukleosiden | [1995/48] | English: | Process for preparing an optically active cyclobutanone, an intermediate in the synthesis of an optically active cyclobutane nucleoside | [1991/48] | French: | Procédé pour la préparation d'une cyclobutanone optiquement active, un intermédiaire dans la synthèse d'un nucléoside cyclobutane optiquement actif | [1995/48] |
| Former [1991/48] | Verfahren zur Herstellung von optisch-aktivem Zyklobutanon, ein Zwischenprodukt in der Synthese von optisch-aktiven Zyklobutanonnukleosiden | ||
| Former [1991/48] | Procédö pour la préparation d'une cyclobutanone optiquement active, un intermédiaire dans la synthèse d'un nucléoside cyclobutane optiquement actif | Examination procedure | 19.11.1993 | Examination requested [1994/03] | 14.11.1994 | Despatch of communication of intention to grant (Approval: No) | 18.05.1995 | Despatch of communication of intention to grant (Approval: later approval) | 29.05.1995 | Communication of intention to grant the patent | 26.06.1995 | Fee for grant paid | 26.06.1995 | Fee for publishing/printing paid | Opposition(s) | 30.08.1996 | No opposition filed within time limit [1996/47] | Fees paid | Renewal fee | 15.05.1993 | Renewal fee patent year 03 | 16.05.1994 | Renewal fee patent year 04 | 12.04.1995 | Renewal fee patent year 05 |
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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 | [A]US3317586 (BURPITT ROBERT D, et al); | [AD]EP0335355 (SQUIBB & SONS INC [US]); | [AD]EP0358154 (NIPPON KAYAKU KK [JP]) | [T] - TETRAHEDRON LETT. vol. 32, no. 48, 25 November 1991, pages 6997 - 7000 S. AHMAD |