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EP0271284
European procedure
Extract from the Register of European Patents
EP About this file: EP0271284
| EP0271284 - Stimulation of earth formations surrounding a deviated wellbore by sequential hydraulic fracturing [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 18.03.1993 Database last updated on 02.11.2024 | Most recent event Tooltip | 22.06.1994 | Lapse of the patent in a contracting state | published on 10.08.1994 [1994/32] | Applicant(s) | For all designated states MOBIL OIL CORPORATION 150 East 42nd Street New York New York 10017 / US | [N/P] |
| Former [1988/24] | For all designated states MOBIL OIL CORPORATION 150 East 42nd Street New York New York 10017 / US | Inventor(s) | 01 /
Uhri, Duane Christian 2410 Kingsbridge Drive Grand Prairie Texas 75050 / US | [1988/24] | Representative(s) | Colmer, Stephen Gary Mobil Services Company Limited Patent Department Mobil House 50-60 Victoria Street London SW1E 6QB / GB | [N/P] |
| Former [1988/24] | Colmer, Stephen Gary Mobil Services Company Limited Patent Department Mobil House 50-60 Victoria Street London SW1E 6QB / GB | Application number, filing date | 87310637.1 | 03.12.1987 | [1988/24] | Priority number, date | US19860938891 | 08.12.1986 Original published format: US 938891 | [1988/24] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0271284 | Date: | 15.06.1988 | Language: | EN | [1988/24] | Type: | A3 Search report | No.: | EP0271284 | Date: | 03.05.1989 | Language: | EN | [1989/18] | Type: | B1 Patent specification | No.: | EP0271284 | Date: | 13.05.1992 | Language: | EN | [1992/20] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 14.03.1989 | Classification | IPC: | E21B43/26 | [1988/24] | CPC: |
E21B43/305 (EP,US);
E21B43/26 (EP,US)
| Designated contracting states | AT, DE, FR, GB, NL [1988/24] | Title | German: | Verfahren zur Anregung der ein abgelenktes Bohrloch umgebenden Erdformation durch sequenz-hydraulische Spaltenbildung | [1988/24] | English: | Stimulation of earth formations surrounding a deviated wellbore by sequential hydraulic fracturing | [1988/24] | French: | Procédé de stimulation d'une formation terrestre entourant un puits dévié par fracturation hydraulique séquentielle | [1988/24] | Examination procedure | 18.10.1989 | Examination requested [1989/50] | 16.01.1991 | Despatch of a communication from the examining division (Time limit: M04) | 21.05.1991 | Reply to a communication from the examining division | 11.10.1991 | Despatch of communication of intention to grant (Approval: Yes) | 15.11.1991 | Communication of intention to grant the patent | 25.01.1992 | Fee for grant paid | 25.01.1992 | Fee for publishing/printing paid | Opposition(s) | 16.02.1993 | No opposition filed within time limit [1993/18] | Fees paid | Renewal fee | 14.10.1989 | Renewal fee patent year 03 | 05.10.1990 | Renewal fee patent year 04 | 30.09.1991 | Renewal fee patent year 05 |
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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. | Lapses during opposition Tooltip | AT | 03.12.1992 | [1994/32] | Documents cited: | Search | [A]US3682246 (CLOSMANN PHILIP JOSEPH); | [A]US3709295 (BRAUNLICH F, et al); | [Y]US3835928 (STRUBHAR M, et al); | [Y]US4005750 (SHUCK LOWELL Z) |