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EP0055675
European procedure
Extract from the Register of European Patents
EP About this file: EP0055675
| EP0055675 - Method and apparatus for determining the stuck point of drill pipes in a borehole [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 23.01.1986 Database last updated on 19.03.2026 | Most recent event Tooltip | 07.03.1997 | Lapse of the patent in a contracting state | published on 23.04.1997 [1997/17] | Applicant(s) | For:FR
IT
SOCIETE DE PROSPECTION ELECTRIQUE SCHLUMBERGER 42, rue Saint-Dominique F-75340 Paris Cédex 07 / FR | For:DE
GB
NL
Schlumberger Limited 277 Park Avenue New York, N.Y. 10172 / US | [N/P] |
| Former [1982/27] | For:FR
IT
SOCIETE DE PROSPECTION ELECTRIQUE SCHLUMBERGER 42, rue Saint-Dominique F-75340 Paris Cédex 07 / FR | ||
| For:DE
GB
NL
SCHLUMBERGER LIMITED 277 Park Avenue New York, N.Y. 10172 / US | Inventor(s) | 01 /
Hache, Jean-Michel 5, rue de la Bièvre F-92340 Bourg La Reine / FR | [1982/27] | Representative(s) | Chareyron, Lucien, et al Service Brevets Patent Department Etudes et Productions Schlumberger BP 202 92142 Clamart Cédex / FR | [N/P] |
| Former [1982/27] | Chareyron, Lucien, et al Service Brevets Patent Department Etudes et Productions Schlumberger BP 202 F-92142 Clamart Cédex / FR | Application number, filing date | 81402090.5 | 30.12.1981 | [1982/27] | Priority number, date | FR19800027868 | 31.12.1980 Original published format: FR 8027868 | [1982/27] | Filing language | FR | Procedural language | FR | Publication | Type: | A1 Application with search report | No.: | EP0055675 | Date: | 07.07.1982 | Language: | FR | [1982/27] | Type: | B1 Patent specification | No.: | EP0055675 | Date: | 20.03.1985 | Language: | FR | [1985/12] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 10.03.1982 | Classification | IPC: | E21B47/09 | [1982/27] | CPC: |
E21B47/09 (EP,US)
| Designated contracting states | DE, FR, GB, IT, NL [1982/27] | Title | German: | Verfahren und Vorrichtung zum Feststellen der Festfahrstelle eines Gestänges in einem Bohrloch | [1982/27] | English: | Method and apparatus for determining the stuck point of drill pipes in a borehole | [1982/27] | French: | Procédé et dispositif pour détecter le point de coincement des tiges dans un sondage | [1982/27] | Examination procedure | 24.12.1982 | Examination requested [1983/10] | 28.11.1983 | Despatch of a communication from the examining division (Time limit: M04) | 28.03.1984 | Reply to a communication from the examining division | 18.06.1984 | Despatch of communication of intention to grant (Approval: ) | 23.08.1984 | Communication of intention to grant the patent | 08.11.1984 | Fee for grant paid | 08.11.1984 | Fee for publishing/printing paid | Opposition(s) | 21.12.1985 | No opposition filed within time limit [1986/11] | Fees paid | Renewal fee | 17.11.1983 | Renewal fee patent year 03 | 28.11.1984 | Renewal fee patent year 04 |
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