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EP0293776
European procedure
Extract from the Register of European Patents
EP About this file: EP0293776
| EP0293776 - Process for separation of nitrogen-containing heterocyclics from aqueous solutions [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 20.07.1991 Database last updated on 24.08.2024 | Most recent event Tooltip | 20.07.1991 | No opposition filed within time limit | published on 11.09.1991 [1991/37] | Applicant(s) | For all designated states HOECHST AKTIENGESELLSCHAFT 65926 Frankfurt am Main / DE | [N/P] |
| Former [1988/49] | For all designated states HOECHST AKTIENGESELLSCHAFT D-65926 Frankfurt am Main / DE | Inventor(s) | 01 /
Kohlhaas, Folker, Dr. Akazienring 64 D-6203 Hochheim am Main / DE | 02 /
Krüger, Karl Herderstrasse 27 D-6203 Hochheim am Main / DE | 03 /
Wojtech, Bernhard, Dr. Kelkheimer Strasse 67 D-6232 Bad Soden am Taunus / DE | [1988/49] | Application number, filing date | 88108484.2 | 27.05.1988 | [1988/49] | Priority number, date | DE19873718271 | 30.05.1987 Original published format: DE 3718271 | [1988/49] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0293776 | Date: | 07.12.1988 | Language: | DE | [1988/49] | Type: | B1 Patent specification | No.: | EP0293776 | Date: | 19.09.1990 | Language: | DE | [1990/38] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 21.09.1988 | Classification | IPC: | C02F1/26 | [1988/49] | CPC: |
C02F1/26 (EP)
| Designated contracting states | CH, DE, GB, LI [1988/49] | Title | German: | Verfahren zur Abtrennung von stickstoffhaltigen Heterocyclen aus wässriger Lösung | [1988/49] | English: | Process for separation of nitrogen-containing heterocyclics from aqueous solutions | [1988/49] | French: | Procédé de séparation d'hétérocycles azotés à partir de solutions aqueuses | [1988/49] | File destroyed: | 03.03.2001 | Examination procedure | 26.05.1989 | Examination requested [1989/30] | 17.08.1989 | Request for accelerated examination filed | 08.12.1989 | Despatch of communication of intention to grant (Approval: Yes) | 08.12.1989 | Decision about request for accelerated examination - accepted: Yes | 08.02.1990 | Communication of intention to grant the patent | 12.05.1990 | Fee for grant paid | 12.05.1990 | Fee for publishing/printing paid | Opposition(s) | 20.06.1991 | No opposition filed within time limit [1991/37] | Fees paid | Renewal fee | 11.04.1990 | Renewal fee patent year 03 |
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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]JP7639961 ; | [XP]EP0228957 (ATOCHEM [FR]) | [A] - CHEMICAL ABSTRACTS, Band 85, Nr. 20, 15. November 1976, Seite 379, Zusammenfassung Nr. 148566q, Columbus, Ohio, US; & JP-A-76 39 961 (SUMITOMO CHEMICAL CO., LTD) 03-04-1976, & JP7639961 A 00000000 |