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EP0495579
European procedure
Extract from the Register of European Patents
EP About this file: EP0495579
| EP0495579 - Drilling fluid [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 03.01.1997 Database last updated on 31.08.2024 | Most recent event Tooltip | 03.01.1997 | No opposition filed within time limit | published on 19.02.1997 [1997/08] | Applicant(s) | For all designated states The British Petroleum Company p.l.c. Britannic House, 1 Finsbury Circus London EC2M 7BA / GB | [N/P] |
| Former [1992/30] | For all designated states THE BRITISH PETROLEUM COMPANY P.L.C. Britannic House, 1 Finsbury Circus London EC2M 7BA / GB | Inventor(s) | 01 /
Elliott, Gregory Phillip, The British Petroleum Company p.l.c., Chertsey Road Sunbury-on-Thames, Middlesex, TW16 7LN / GB | [1992/30] | Representative(s) | Wilson, Michael John, et al BP International Limited, Patents & Agreements Division, Chertsey Road Sunbury-on-Thames Middlesex TW16 7LN / GB | [N/P] |
| Former [1993/21] | Wilson, Michael John, et al BP International Limited, Patents & Agreements Division, Chertsey Road Sunbury-on-Thames, Middlesex TW16 7LN / GB | ||
| Former [1992/30] | MacLeod, Malcolm BP INTERNATIONAL LIMITED Patents Division Chertsey Road Sunbury-on-Thames Middlesex TW16 7LN / GB | Application number, filing date | 92300151.5 | 08.01.1992 | [1992/30] | Priority number, date | GB19910000699 | 12.01.1991 Original published format: GB 9100699 | [1992/30] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0495579 | Date: | 22.07.1992 | Language: | EN | [1992/30] | Type: | A3 Search report | No.: | EP0495579 | Date: | 17.03.1993 | Language: | EN | [1993/11] | Type: | B1 Patent specification | No.: | EP0495579 | Date: | 28.02.1996 | [1996/09] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 22.01.1993 | Classification | IPC: | C09K7/02 | [1992/30] | CPC: |
C09K8/22 (EP)
| Designated contracting states | BE, DE, ES, FR, GB, IT, NL [1992/30] | Title | German: | Bohrflüssigkeit | [1992/30] | English: | Drilling fluid | [1992/30] | French: | Fluide de forage | [1992/30] | Examination procedure | 13.09.1993 | Examination requested [1993/45] | 13.12.1994 | Despatch of communication of intention to grant (Approval: No) | 30.06.1995 | Despatch of communication of intention to grant (Approval: later approval) | 06.07.1995 | Communication of intention to grant the patent | 18.09.1995 | Fee for grant paid | 18.09.1995 | Fee for publishing/printing paid | Opposition(s) | 29.11.1996 | No opposition filed within time limit [1997/08] | Fees paid | Renewal fee | 15.12.1993 | Renewal fee patent year 03 | 06.12.1994 | Renewal fee patent year 04 | 04.12.1995 | 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. | Documents cited: | Search | [Y]US2786027 (SALATHIEL RICHARD A); | [Y]FR2624132 (BAKER HUGHES INC [US]); | [YP]EP0453625 (BAKER HUGHES INC [US]) |