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EP0271161
European procedure
Extract from the Register of European Patents
EP About this file: EP0271161
| EP0271161 - Process for purifying oxalic acid diamide [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 20.08.1992 Database last updated on 02.11.2024 | Most recent event Tooltip | 20.08.1992 | No opposition filed within time limit | published on 07.10.1992 [1992/41] | Applicant(s) | For all designated states ENICHEM ANIC S.p.A. Via Ruggero Settimo 55 90139 Palermo / IT | [N/P] |
| Former [1988/24] | For all designated states ENICHEM ANIC S.p.A. Via Ruggero Settimo 55 I-90139 Palermo / IT | Inventor(s) | 01 /
Lorenzoni, Loreno Via Sassari 184 I-07046 Porto Torres, Sassari / IT | 02 /
Messina, Giuseppe Via Perpignan 27 I-07041 Alghero, Sassari / IT | 03 /
Bruzzi, Vittorio Via Assietta 31 I-20161 Milan / IT | [1988/24] | Representative(s) | Roggero, Sergio, et al Ing. Barzanò & Zanardo Milano S.p.A. Via Borgonuovo 10 I-20121 Milano / IT | [1988/24] | Application number, filing date | 87202424.5 | 07.12.1987 | [1988/24] | Priority number, date | IT19860022638 | 11.12.1986 Original published format: IT 2263886 | [1988/24] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0271161 | Date: | 15.06.1988 | Language: | EN | [1988/24] | Type: | A3 Search report | No.: | EP0271161 | Date: | 12.04.1989 | Language: | EN | [1989/15] | Type: | B1 Patent specification | No.: | EP0271161 | Date: | 16.10.1991 | Language: | EN | [1991/42] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 20.02.1989 | Classification | IPC: | C07C231/00, C07C233/03 | [1991/42] | CPC: |
C07C235/00 (EP,US)
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| Former IPC [1988/24] | C07C102/00, C07C103/127 | Designated contracting states | AT, BE, CH, DE, ES, FR, GB, GR, LI, LU, NL, SE [1988/24] | Title | German: | Verfahren zur Reinigung von Oxalsäurediamid | [1988/24] | English: | Process for purifying oxalic acid diamide | [1988/24] | French: | Procédé de purification du diamide de l'acide oxalique | [1988/24] | Examination procedure | 02.06.1989 | Examination requested [1989/36] | 28.02.1991 | Despatch of communication of intention to grant (Approval: Yes) | 25.03.1991 | Communication of intention to grant the patent | 31.05.1991 | Fee for grant paid | 31.05.1991 | Fee for publishing/printing paid | Opposition(s) | 17.07.1992 | No opposition filed within time limit [1992/41] | Fees paid | Renewal fee | 10.11.1989 | Renewal fee patent year 03 | 13.11.1990 | 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 | [A]CH348399 (AMERICAN CYANAMID CO [US]); | [E]EP0248358 (HOECHST AG [DE]) |