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EP0519756
European procedure
Extract from the Register of European Patents
EP About this file: EP0519756
| EP0519756 - Thixotropic well cementing composition [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 15.08.1997 Database last updated on 21.05.2024 | Most recent event Tooltip | 15.08.1997 | No opposition filed within time limit | published on 01.10.1997 [1997/40] | Applicant(s) | For all designated states HALLIBURTON COMPANY P.O. Drawer 1431 Duncan Oklahoma 73536 / US | [N/P] |
| Former [1992/52] | For all designated states HALLIBURTON COMPANY P.O. Drawer 1431 Duncan Oklahoma 73536 / US | Inventor(s) | 01 /
Riley, Wendell D. HC 64, Box 144 Marlow, Oklahoma 73055 / US | 02 /
Childs, Jerry D. 3101 Springdale Lane Duncan, Oklahoma 73533 / US | [1992/52] | Representative(s) | Wain, Christopher Paul, et al A.A. Thornton & Co. 235 High Holborn London WC1V 7LE / GB | [N/P] |
| Former [1992/52] | Wain, Christopher Paul, et al A.A. THORNTON & CO. Northumberland House 303-306 High Holborn London WC1V 7LE / GB | Application number, filing date | 92305706.1 | 22.06.1992 | [1992/52] | Priority number, date | US19910718679 | 21.06.1991 Original published format: US 718679 | [1992/52] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0519756 | Date: | 23.12.1992 | Language: | EN | [1992/52] | Type: | B1 Patent specification | No.: | EP0519756 | Date: | 09.10.1996 | Language: | EN | [1996/41] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 05.10.1992 | Classification | IPC: | C04B28/04 | [1992/52] | CPC: |
C04B28/04 (EP,US);
C09K8/46 (EP,US)
| C-Set: |
C04B28/04, C04B22/0093, C04B22/124 (EP,US)
| Designated contracting states | DE, FR, GB, IT, NL [1992/52] | Title | German: | Thixotrope Bohrloch-Zementierungszusammensetzung | [1992/52] | English: | Thixotropic well cementing composition | [1992/52] | French: | Composition thixotrope de cimentation de puits | [1992/52] | Examination procedure | 20.04.1993 | Examination requested [1993/25] | 01.09.1995 | Despatch of communication of intention to grant (Approval: No) | 01.03.1996 | Despatch of communication of intention to grant (Approval: later approval) | 07.03.1996 | Communication of intention to grant the patent | 28.05.1996 | Fee for grant paid | 28.05.1996 | Fee for publishing/printing paid | Opposition(s) | 10.07.1997 | No opposition filed within time limit [1997/40] | Fees paid | Renewal fee | 11.06.1994 | Renewal fee patent year 03 | 01.05.1995 | Renewal fee patent year 04 | 10.06.1996 | 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 | [X]DE1077595 (RUBEROIDWERKE AG); | [Y]FR2314904 (ULLRICH FRITZ [DE]); | [A]GB1579356 (STANDARD OIL CO) | [A] - CHEMICAL ABSTRACTS, vol. 97, no. 8, 23 August 1982, Columbus, Ohio, US; abstract no. 59989k, page 260 ; | Examination | SU910548 | - CHEMICAL ABSTRACTS, vol. 97, no. 8, 23 August 1982, Columbus, Ohio, US; abstract no. 59989k, page 260 & SU-A-910548, & SU910548 A 00000000 |