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EP0606981
European procedure
Extract from the Register of European Patents
EP About this file: EP0606981
| EP0606981 - Downhole valve apparatus [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 28.08.1998 Database last updated on 03.09.2024 | Most recent event Tooltip | 28.08.1998 | No opposition filed within time limit | published on 14.10.1998 [1998/42] | Applicant(s) | For all designated states HALLIBURTON ENERGY SERVICES, INC. P.O. Box 819052 Dallas Texas 75381-9052 / US | [N/P] |
| Former [1997/23] | For all designated states Halliburton Energy Services, Inc. P.O. Box 819052 Dallas, Texas 75381-9052 / US | ||
| Former [1996/10] | For all designated states HALLIBURTON COMPANY 2601 Beltline Road P.O. Box 819052 Dallas, Texas 75381-9052 / US | ||
| Former [1994/29] | For all designated states HALLIBURTON COMPANY P.O. Box 819052 Dallas, Texas 75381-9052 / US | Inventor(s) | 01 /
Ringgenberg, Paul D. 2101 Brentwood Lane Carrollton, Texas 75006 / US | [1994/29] | Representative(s) | Wain, Christopher Paul, et al A.A. Thornton & Co. 235 High Holborn London WC1V 7LE / GB | [N/P] |
| Former [1994/29] | Wain, Christopher Paul, et al A.A. THORNTON & CO. Northumberland House 303-306 High Holborn London WC1V 7LE / GB | Application number, filing date | 94300066.1 | 06.01.1994 | [1994/29] | Priority number, date | US19930004337 | 14.01.1993 Original published format: US 4337 | [1994/29] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0606981 | Date: | 20.07.1994 | Language: | EN | [1994/29] | Type: | B1 Patent specification | No.: | EP0606981 | Date: | 22.10.1997 | Language: | EN | [1997/43] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 02.05.1994 | Classification | IPC: | E21B34/10 | [1994/29] | CPC: |
E21B34/103 (EP,US);
E21B2200/04 (EP,US)
| Designated contracting states | DE, FR, GB, NL [1994/29] | Title | German: | Ventilvorrichtung im Bohrloch | [1994/29] | English: | Downhole valve apparatus | [1994/29] | French: | Dispositif de vanne au fond de puits | [1994/29] | Examination procedure | 24.08.1994 | Examination requested [1994/42] | 12.02.1996 | Despatch of a communication from the examining division (Time limit: M04) | 13.06.1996 | Reply to a communication from the examining division | 04.11.1996 | Despatch of communication of intention to grant (Approval: Yes) | 21.04.1997 | Communication of intention to grant the patent | 11.07.1997 | Fee for grant paid | 11.07.1997 | Fee for publishing/printing paid | Opposition(s) | 23.07.1998 | No opposition filed within time limit [1998/42] | Fees paid | Renewal fee | 10.01.1996 | Renewal fee patent year 03 | 08.01.1997 | 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 | [DX]US3970147 (JESSUP ROBERT L, et al) [DX] 1,4,5,8,10 * column 6, line 28 - column 9, line 3; figures 4,5 *; | [A]US4633952 (RINGGENBERG PAUL D [US]) [A] 1-4,9,10 * column 11, line 1 - column 12, line 53; figure - *; | [X]EP0288239 (HALLIBURTON CO [US]) [X] 1-4,6,10 * column 7, line 44 - column 10, line 7; figures 3A,3B *; | [A]EP0370652 (HALLIBURTON CO [US]) [A] 1,3,4,9,10 * abstract * * column 11, line 16 - line 45; figures 2A-2G *; | [X]WO9013731 (EXPLORATION & PROD SERV [GB]) [X] 1,2,4,8,10 * abstract *; | [A]US4979569 (ANYAN STEVEN L [US], et al) [A] 1,2,7,10* abstract * |