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EP0033557
European procedure
Extract from the Register of European Patents
EP About this file: EP0033557
| EP0033557 - A method and apparatus for testing the effectiveness of chemicals such as scale inhibitors or scale removers [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 11.11.1985 Database last updated on 16.07.2024 | Most recent event Tooltip | 11.11.1985 | No opposition filed within time limit | published on 15.01.1986 [1986/03] | Applicant(s) | For all designated states Shell Internationale Research Maatschappij B.V. Carel van Bylandtlaan 30 2596 HR Den Haag / NL | [N/P] |
| Former [1981/32] | For all designated states SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. Carel van Bylandtlaan 30 NL-2596 HR Den Haag / NL | Inventor(s) | 01 /
Zeelenberg, Johannes Peter Wouter Volmerlaan 6 NL-2288 GD Rijswijk / NL | 02 /
de Koning, Willem Gerard Volmerlaan 6 NL-2288 GD Rijswijk / NL | [1981/32] | Representative(s) | Aalbers, Onno, et al P.O. Box 162 2501 AN Den Haag / NL | [N/P] |
| Former [1985/03] | Aalbers, Onno, et al P.O. Box 162 NL-2501 AN The Hague / NL | ||
| Former [1982/08] | Puister, Antonius Tonnis, Mr. P.O. Box 302 NL-2501 CH The Hague / NL | ||
| Former [1981/32] | Keuzenkamp, Abraham P.O. Box 302 NL-2501 CH 's-Gravenhage / NL | Application number, filing date | 81200051.1 | 16.01.1981 | [1981/32] | Priority number, date | GB19800003268 | 31.01.1980 Original published format: GB 8003268 | [1981/32] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0033557 | Date: | 12.08.1981 | Language: | EN | [1981/32] | Type: | B1 Patent specification | No.: | EP0033557 | Date: | 02.01.1985 | Language: | EN | [1985/01] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 20.05.1981 | Classification | IPC: | G01N37/00, C23F14/00 | [1981/32] | CPC: |
G01N11/08 (EP);
C02F5/08 (EP)
| Designated contracting states | BE, DE, FR, IT, LU, NL [1981/32] | Title | German: | Verfahren und Vorrichtung zur Wirksamkeitsprüfung von Chemikalien wie Kesselsteininhibitoren oder Kesselsteinentfernern | [1981/32] | English: | A method and apparatus for testing the effectiveness of chemicals such as scale inhibitors or scale removers | [1981/32] | French: | Procédé et appareil pour essayer l'activité de produits chimiques tels qu'inhibiteurs de la formation du tartre ou agents détartreurs | [1981/32] | Examination procedure | 25.01.1982 | Examination requested [1982/15] | 15.06.1983 | Despatch of a communication from the examining division (Time limit: M04) | 16.07.1983 | Reply to a communication from the examining division | 27.03.1984 | Despatch of communication of intention to grant (Approval: ) | 15.06.1984 | Communication of intention to grant the patent | 20.08.1984 | Fee for grant paid | 20.08.1984 | Fee for publishing/printing paid | Opposition(s) | 03.10.1985 | No opposition filed within time limit [1986/03] | Fees paid | Renewal fee | 03.12.1982 | Renewal fee patent year 03 | 13.12.1983 | 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]DE1096079 ; | [A]US2571470 (MILLIGAN WILLIAM B); | [A]CH512591 (COMMISSARIAT ENERGIE ATOMIQUE [FR]); | [A]DE2403188 (DOW CHEMICAL CO); | [A]DE2758831 (ROHRBACK CORP) |