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EP0368119
European procedure
Extract from the Register of European Patents
EP About this file: EP0368119
| EP0368119 - Use of methyl polysiloxanes with quaternary ammonium groups as corrosion inhibitors in mainly aqueous preparations [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 04.11.1993 Database last updated on 20.05.2024 | Most recent event Tooltip | 04.11.1993 | No opposition filed within time limit | published on 22.12.1993 [1993/51] | Applicant(s) | For all designated states Th. Goldschmidt AG Goldschmidtstrasse 100 45127 Essen / DE | [N/P] |
| Former [1990/20] | For all designated states Th. Goldschmidt AG Goldschmidtstrasse 100 D-45127 Essen / DE | Inventor(s) | 01 /
Schaefer, Dietmar, Dr. Milchstrasse 40 D-4300 Essen 14 / DE | 02 /
Höhner, Werner Finkenstrasse 34 D-5620 Velbert 11 / DE | [1990/20] | Application number, filing date | 89120152.7 | 31.10.1989 | [1990/20] | Priority number, date | DE19883837811 | 08.11.1988 Original published format: DE 3837811 | [1990/20] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0368119 | Date: | 16.05.1990 | Language: | DE | [1990/20] | Type: | B1 Patent specification | No.: | EP0368119 | Date: | 30.12.1992 | Language: | DE | [1992/53] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 19.03.1990 | Classification | IPC: | C23F11/14, C23F11/173 | [1990/20] | CPC: |
C23F11/141 (EP,US);
C23F11/142 (EP,US);
C23F11/173 (EP,US)
| Designated contracting states | BE, DE, FR, GB, IT, NL [1990/20] | Title | German: | Verwendung von Methylpolysiloxanen mit quartären Ammoniumgruppen als Korrosionsinhibitoren für überwiegend aus Wasser bestehende Zubereitungen | [1990/20] | English: | Use of methyl polysiloxanes with quaternary ammonium groups as corrosion inhibitors in mainly aqueous preparations | [1990/20] | French: | Utilisation de polysiloxanes méthylés portant des groupes d'ammonium quaternaire comme inhibiteurs de la corrosion dans des compositions principalement aqueuses | [1990/20] | Examination procedure | 03.11.1989 | Examination requested [1990/20] | 28.04.1992 | Despatch of communication of intention to grant (Approval: Yes) | 14.05.1992 | Communication of intention to grant the patent | 27.07.1992 | Fee for grant paid | 27.07.1992 | Fee for publishing/printing paid | Opposition(s) | 01.10.1993 | No opposition filed within time limit [1993/51] | Fees paid | Renewal fee | 10.10.1991 | Renewal fee patent year 03 | 09.10.1992 | 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]US3248329 (PINES ARTHUR N, et al); | [AD]US3389160 (REID WALLACE G); | [A]US3402191 (MOREHOUSE EDWARD L); | [A]US3471541 (MOREHOUSE EDWARD LEWIS); | [A]EP0163494 (DOW CORNING [US]) |