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EP0572055
European procedure
Extract from the Register of European Patents
EP About this file: EP0572055
| EP0572055 - Method for detecting drillstring washouts [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 30.01.1998 Database last updated on 03.09.2024 | Most recent event Tooltip | 10.07.2004 | Change - lapse in a contracting state Updated state(s): FR | published on 25.08.2004 [2004/35] | Applicant(s) | For:DE
DK
NL
SEDCO FOREX TECHNOLOGY INC. 8 Calle Aquilino de la Guardia Panama City / PA | For:FR
Services Pétroliers Schlumberger 42, rue Saint Dominique 75007 Paris / FR | [N/P] |
| Former [1993/48] | For:DE
DK
NL
SEDCO FOREX TECHNOLOGY INC. 8 Calle Aquilino de la Guardia Panama City / PA | ||
| For:FR
SERVICES PETROLIERS SCHLUMBERGER 42, rue Saint-Dominique F-75007 Paris / FR | Inventor(s) | 01 /
Damak, Mohamed 22 rue des Boulangers F-75005 Paris / FR | 02 /
McCann, Dominic Patrick Joseph 1546 Locke Lane Sugar Land, Texas 77478 / US | 03 /
White, David Brian 9 Chemin des Vignes F-91400 Orsay / FR | [1993/48] | Representative(s) | Hyden, Martin Douglas Rouse Patents 1st Floor 228-240 Banbury Road Oxford Oxfordshire OX2 7BY / GB | [N/P] |
| Former [1993/48] | Hyden, Martin Douglas c/o Schlumberger Cambridge Research Limited PO Box 153 Cambridge CB3 OHG / GB | Application number, filing date | 93201208.1 | 27.04.1993 | [1993/48] | Priority number, date | GB19920011048 | 23.05.1992 Original published format: GB 9211048 | [1993/48] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0572055 | Date: | 01.12.1993 | Language: | EN | [1993/48] | Type: | B1 Patent specification | No.: | EP0572055 | Date: | 26.03.1997 | Language: | EN | [1997/13] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 25.08.1993 | Classification | IPC: | E21B21/08, E21B44/00 | [1993/48] | CPC: |
E21B44/00 (EP);
E21B21/08 (EP,US)
| Designated contracting states | DE, DK, FR, NL [1993/48] | Title | German: | Verfahren zur Feststellung von Lecks in Bohrgestängen | [1993/48] | English: | Method for detecting drillstring washouts | [1993/48] | French: | Procédé de détection de fuites dans une colonne de forage | [1993/48] | Examination procedure | 11.04.1994 | Examination requested [1994/24] | 19.12.1995 | Despatch of a communication from the examining division (Time limit: M04) | 14.03.1996 | Reply to a communication from the examining division | 05.06.1996 | Despatch of communication of intention to grant (Approval: Yes) | 24.09.1996 | Communication of intention to grant the patent | 28.12.1996 | Fee for grant paid | 28.12.1996 | Fee for publishing/printing paid | Opposition(s) | 30.12.1997 | No opposition filed within time limit [1998/12] | Fees paid | Renewal fee | 16.02.1995 | Renewal fee patent year 03 | 08.02.1996 | Renewal fee patent year 04 |
| Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Lapses during opposition Tooltip | DK | 26.03.1997 | FR | 26.03.1997 | NL | 26.03.1997 | DE | 27.06.1997 | [2004/35] |
| Former [2003/08] | DK | 26.03.1997 | |
| NL | 26.03.1997 | ||
| DE | 27.06.1997 | ||
| FR | 22.08.1997 | ||
| Former [1998/15] | DK | 26.03.1997 | |
| DE | 27.06.1997 | ||
| FR | 22.08.1997 | ||
| Former [1998/03] | DE | 27.06.1997 | |
| FR | 22.08.1997 | Documents cited: | Search | [A]GB2024434 (NL INDUSTRIES INC); | [A]US4346594 (OWINGS ALLEN J); | [A]US4430892 (OWINGS ALLEN J [US]); | [A]US4941951 (SHEPPARD MICHAEL [US], et al) |