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EP0356804
European procedure
Extract from the Register of European Patents
EP About this file: EP0356804
| EP0356804 - Process for the production of alkali dichromates and chromic acid [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 25.03.1993 Database last updated on 29.06.2024 | Most recent event Tooltip | 25.03.1993 | No opposition filed within time limit | published on 12.05.1993 [1993/19] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1990/10] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Klotz, Helmut, Dr. Pappelweg 1 D-5060 Bergisch-Gladbach 2 / DE | 02 /
Weber, Rainer, Dr. Heymannstrasse 36 D-5090 Leverkusen 1 / DE | 03 /
Block, Hans-Dieter, Dr. Biesenbach 49 D-5090 Leverkusen 3 / DE | 04 /
Lönhoff, Norbert, Dr. Paul-Klee-Strasse 60 D-5090 Leverkusen 1 / DE | [1990/10] | Application number, filing date | 89115032.8 | 15.08.1989 | [1990/10] | Priority number, date | DE19883829119 | 27.08.1988 Original published format: DE 3829119 | [1990/10] | Filing language | DE | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0356804 | Date: | 07.03.1990 | Language: | DE | [1990/10] | Type: | A3 Search report | No.: | EP0356804 | Date: | 18.04.1990 | Language: | DE | [1990/16] | Type: | B1 Patent specification | No.: | EP0356804 | Date: | 20.05.1992 | Language: | DE | [1992/21] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 01.03.1990 | Classification | IPC: | C25B1/22, C25B1/28, C01G37/14 | [1990/10] | CPC: |
C25B1/22 (EP,KR,US)
| Designated contracting states | DE, ES, FR, GB, IT [1990/10] | Title | German: | Verfahren zur Herstellung von Alkalidichromaten und Chromsäure | [1990/10] | English: | Process for the production of alkali dichromates and chromic acid | [1990/10] | French: | Procédé de production de dichromates alcalins et d'acide chromique | [1990/10] | Examination procedure | 15.08.1989 | Examination requested [1990/10] | 17.10.1991 | Despatch of communication of intention to grant (Approval: Yes) | 13.11.1991 | Communication of intention to grant the patent | 28.01.1992 | Fee for grant paid | 28.01.1992 | Fee for publishing/printing paid | Opposition(s) | 23.02.1993 | No opposition filed within time limit [1993/19] | Fees paid | Renewal fee | 28.12.1990 | 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 | [YD]GB2051869 (DIAMOND SHAMROCK CORP) | [YD] - GALVANOTECHNIK, Band 70, Nr. 5, 1979, Seiten 420-428; J. WURM: "Elektolytische Beschichtungen aus der Salzschmelze" |