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EP0293191
European procedure
Extract from the Register of European Patents
EP About this file: EP0293191
| EP0293191 - Drilling and completion fluid [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 01.11.1995 Database last updated on 16.11.2024 | Most recent event Tooltip | 30.11.2007 | Lapse of the patent in a contracting state | published on 02.01.2008 [2008/01] | Applicant(s) | For all designated states HYDRA FLUIDS, INC. 4265 San Felipe Suite 200 Houston Texas 77027 / US | [N/P] |
| Former [1988/48] | For all designated states HYDRA FLUIDS, INC. 4265 San Felipe Suite 200 Houston Texas 77027 / US | Inventor(s) | 01 /
Peterson, Thomas E. 4265 San Felipe Houston Texas 77027 / US | [1988/48] | Representative(s) | Lightfoot, Robert Oscar, et al RAWORTH, MOSS & COOK, Raworth House, 36 Sydenham Road Croydon Surrey CR0 2EF / GB | [N/P] |
| Former [1991/26] | Lightfoot, Robert Oscar, et al RAWORTH, MOSS & COOK, Raworth House, 36 Sydenham Road Croydon, Surrey CR0 2EF / GB | ||
| Former [1988/48] | Fisher, Bernard Raworth, Moss & Cook 36 Sydenham Road Croydon Surrey CR0 2EF / GB | Application number, filing date | 88304749.0 | 25.05.1988 | [1988/48] | Priority number, date | US19870053472 | 26.05.1987 Original published format: US 53472 | [1988/48] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0293191 | Date: | 30.11.1988 | Language: | EN | [1988/48] | Type: | A3 Search report | No.: | EP0293191 | Date: | 24.01.1990 | Language: | EN | [1990/04] | Type: | B1 Patent specification | No.: | EP0293191 | Date: | 28.12.1994 | Language: | EN | [1994/52] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 04.12.1989 | Classification | IPC: | C09K7/02 | [1988/48] | CPC: |
C09K8/22 (EP,US);
Y10S507/925 (EP,US)
| Designated contracting states | DE, GB, IT, NL [1988/48] | Title | German: | Bohr- und Abdichtungsflüssigkeit | [1988/48] | English: | Drilling and completion fluid | [1988/48] | French: | Fluide de forage et de complétion | [1988/48] | Examination procedure | 16.07.1990 | Examination requested [1990/37] | 10.10.1991 | Despatch of a communication from the examining division (Time limit: M06) | 25.02.1992 | Reply to a communication from the examining division | 10.12.1992 | Despatch of a communication from the examining division (Time limit: M02) | 10.02.1993 | Reply to a communication from the examining division | 29.10.1993 | Despatch of a communication from the examining division (Time limit: M02) | 06.12.1993 | Reply to a communication from the examining division | 04.02.1994 | Despatch of communication of intention to grant (Approval: Yes) | 09.06.1994 | Communication of intention to grant the patent | 30.08.1994 | Fee for grant paid | 30.08.1994 | Fee for publishing/printing paid | Opposition(s) | 29.09.1995 | No opposition filed within time limit [1995/51] | Fees paid | Renewal fee | 16.05.1990 | Renewal fee patent year 03 | 17.05.1991 | Renewal fee patent year 04 | 11.05.1992 | Renewal fee patent year 05 | 10.05.1993 | Renewal fee patent year 06 | 26.05.1994 | Renewal fee patent year 07 |
| Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
| 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 | IT | 28.12.1994 | NL | 28.12.1994 | DE | 29.03.1995 | [2008/01] |
| Former [1999/42] | IT | 28.12.1994 | |
| NL | 28.12.1994 | ||
| DE | 29.03.1995 | ||
| Former [1995/49] | NL | 28.12.1994 | |
| DE | 29.03.1995 | ||
| Former [1995/40] | DE | 29.03.1995 | Documents cited: | Search | [A]US4561985 (GLASS JR JOSEPH E [US]); | [A]US3407878 (ENGLE CHARLES J); | [A]US3953337 (WALKER CLARENCE O, et al); | [A]EP0058917 (PHILLIPS PETROLEUM CO [US]); | [A]US4172800 (WALKER THAD O [US]); | [A]US2191312 (CANNON GEORGE E) |