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EP0571612
European procedure
Extract from the Register of European Patents
EP About this file: EP0571612
| EP0571612 - DRILLING MUD COMPOSITION AND PROCESS FOR REDUCING THE FILTRATE OF METAL HYDROXIDE MIXTURES-CONTAINING DRILLING MUD COMPOSITIONS [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 24.05.1996 Database last updated on 18.11.2024 | Most recent event Tooltip | 24.05.1996 | No opposition filed within time limit | published on 10.07.1996 [1996/28] | Applicant(s) | For all designated states SKW Trostberg Aktiengesellschaft Dr.-Albert-Frank-Strasse 32 83308 Trostberg / DE | [N/P] |
| Former [1993/48] | For all designated states SKW Trostberg Aktiengesellschaft Dr.-Albert-Frank-Strasse 32 D-83308 Trostberg / DE | Inventor(s) | 01 /
PLANK, Johann Gräfin-Adelheid-Strasse 9 D-8223 Trostberg / DE | [1993/48] | Representative(s) | Huber, Bernhard, et al Weickmann & Weickmann Patentanwälte Postfach 86 08 20 81635 München / DE | [N/P] |
| Former [1993/48] | Huber, Bernhard, Dipl.-Chem., et al Patentanwälte H. Weickmann, Dr. K. Fincke F.A. Weickmann, B. Huber Dr. H. Liska, Dr. J. Prechtel, Dr. B. Böhm Postfach 86 08 20 D-81635 München / DE | Application number, filing date | 93901031.0 | 16.12.1992 | [1993/48] | WO1992EP02920 | Priority number, date | DE19914141605 | 17.12.1991 Original published format: DE 4141605 | [1993/48] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | WO9312194 | Date: | 24.06.1993 | Language: | DE | [1993/15] | Type: | A1 Application with search report | No.: | EP0571612 | Date: | 01.12.1993 | Language: | DE | The application published by WIPO in one of the EPO official languages on 24.06.1993 takes the place of the publication of the European patent application. | [1993/48] | Type: | B1 Patent specification | No.: | EP0571612 | Date: | 19.07.1995 | Language: | DE | [1995/29] | Search report(s) | International search report - published on: | EP | 24.06.1993 | Classification | IPC: | C09K7/02 | [1993/48] | CPC: |
C09K8/90 (EP,US);
C09K8/206 (EP,US)
| Designated contracting states | DE, FR, GB, IT, NL [1993/48] | Title | German: | BOHRSPÜLZUSAMMENSETZUNG UND VERFAHREN ZUR FILTRATREDUZIERUNG VON GEMISCHTE METALLHYDROXIDE ENTHALTENDEN BOHRSPÜLZUSAMMENSETZUNGEN | [1993/48] | English: | DRILLING MUD COMPOSITION AND PROCESS FOR REDUCING THE FILTRATE OF METAL HYDROXIDE MIXTURES-CONTAINING DRILLING MUD COMPOSITIONS | [1993/48] | French: | COMPOSITION DE BOUE DE FORAGE ET PROCEDE DE REDUCTION DU FILTRAT DE COMPOSITIONS DE BOUES DE FORAGE CONTENANT DES HYDROXYDES METALLIQUES MELANGES | [1993/48] | Entry into regional phase | 12.08.1993 | National basic fee paid | 12.08.1993 | Designation fee(s) paid | 12.08.1993 | Examination fee paid | Examination procedure | 12.08.1993 | Examination requested [1993/48] | 04.10.1994 | Despatch of a communication from the examining division (Time limit: M02) | 27.10.1994 | Reply to a communication from the examining division | 13.12.1994 | Despatch of communication of intention to grant (Approval: Yes) | 18.01.1995 | Communication of intention to grant the patent | 11.04.1995 | Fee for grant paid | 11.04.1995 | Fee for publishing/printing paid | Opposition(s) | 20.04.1996 | No opposition filed within time limit [1996/28] | Fees paid | Renewal fee | 12.11.1994 | 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. | Cited in | International search | [X]US3284353 (BATDORF JACK B, et al); | [Y]EP0207810 (DOW CHEMICAL CO [US]); | [X]US4652384 (FRANCIS H PAUL [US], et al); | [X]US4944634 (ALEXANDER WILLIAM [US], et al); | [YP]EP0501069 (INT DRILLING FLUIDS INC [US]) |