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EP0325811
European procedure
Extract from the Register of European Patents
EP About this file: EP0325811
| EP0325811 - Process for the catalytic reduction of nitrogen oxide [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 19.03.1992 Database last updated on 21.01.2025 | Most recent event Tooltip | 19.03.1992 | No opposition filed within time limit | published on 06.05.1992 [1992/19] | Applicant(s) | For all designated states METALLGESELLSCHAFT AG Postfach 10 15 01 60015 Frankfurt / DE | [N/P] |
| Former [1989/31] | For all designated states METALLGESELLSCHAFT AG Postfach 10 15 01, Reuterweg 14 D-60015 Frankfurt / DE | Inventor(s) | 01 /
Fennemann, Wolfgang Schlinkenweg 16 D-6367 Karben 6 / DE | 02 /
Weisweiler, Werner, Prof. Dr. Goethering 107 D-7537 Remchingen-Singen / DE | 03 /
Retzlaff, Burkhard Veilchenstrasse 9 D-7500 Karlsruhe / DE | 04 /
Hochstein, Bernd Adlerstrasse 40 D-7500 Karlsruhe / DE | [1989/31] | Application number, filing date | 88202795.6 | 07.12.1988 | [1989/31] | Priority number, date | DE19883801785 | 22.01.1988 Original published format: DE 3801785 | [1989/31] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0325811 | Date: | 02.08.1989 | Language: | DE | [1989/31] | Type: | B1 Patent specification | No.: | EP0325811 | Date: | 15.05.1991 | Language: | DE | [1991/20] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 08.06.1989 | Classification | IPC: | B01D53/36, B01J27/053 | [1989/31] | CPC: |
B01D53/8625 (EP,US);
B01D53/8628 (EP,US);
B01J27/053 (EP,US)
| Designated contracting states | AT, DE, ES, GB, IT, SE [1989/31] | Title | German: | Verfahren zur katalytischen Reduktion von NO | [1989/31] | English: | Process for the catalytic reduction of nitrogen oxide | [1989/31] | French: | Procédé pour la réduction catalytique d'oxyde d'azote | [1989/31] | Examination procedure | 30.06.1989 | Examination requested [1989/35] | 30.06.1989 | Request for accelerated examination filed | 21.11.1989 | Despatch of a communication from the examining division (Time limit: M04) | 21.11.1989 | Decision about request for accelerated examination - accepted: Yes | 22.03.1990 | Reply to a communication from the examining division | 01.10.1990 | Despatch of communication of intention to grant (Approval: Yes) | 20.11.1990 | Communication of intention to grant the patent | 24.11.1990 | Fee for grant paid | 24.11.1990 | Fee for publishing/printing paid | Opposition(s) | 18.02.1992 | No opposition filed within time limit [1992/19] | Fees paid | Renewal fee | 10.11.1990 | 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 | [X]DE2454515 (KURASHIKI BOSEKI KK); | [A]FR2285922 (SHELL INT RESEARCH [NL]); | [A]DE2748471 (MITSUI PETROCHEMICAL IND) |