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EP0454771
European procedure
Extract from the Register of European Patents
EP About this file: EP0454771
| EP0454771 - METHOD FOR REDUCING NOISE IN DRILL STRING SIGNALS [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 12.08.1995 Database last updated on 18.10.2024 | Most recent event Tooltip | 12.08.1995 | No opposition filed within time limit | published on 04.10.1995 [1995/40] | Applicant(s) | For all designated states Western Atlas International, Inc. 10205 Westheimer Road Houston Texas 77042-4299 / US | [N/P] |
| Former [1991/45] | For all designated states WESTERN ATLAS INTERNATIONAL, INC. 10205 Westheimer Road Houston Texas 77042-4299 / US | Inventor(s) | 01 /
Rector, James W. 25231 La Rena Lane Los Altos, CA 94022 / US | [1994/41] |
| Former [1991/46] | 01 /
RECTOR, James W. 25231 La Rena Lane Los Altos, CA 94022 / US | ||
| Former [1991/45] | 01 /
RECTOR, James, W. 1500 Altschul Menlo Park, CA 94025 / US | Representative(s) | Godsill, John Kenneth, et al Haseltine Lake & Co., Imperial House, 15-19 Kingsway London WC2B 6UD / GB | [N/P] |
| Former [1991/45] | Godsill, John Kenneth, et al Haseltine Lake & Co. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT / GB | Application number, filing date | 90902545.4 | 19.01.1990 | [1991/45] | WO1990US00415 | Priority number, date | US19890300315 | 23.01.1989 Original published format: US 300315 | [1991/45] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | WO9008332 | Date: | 26.07.1990 | Language: | EN | [1990/17] | Type: | A1 Application with search report | No.: | EP0454771 | Date: | 06.11.1991 | Language: | EN | The application published by WIPO in one of the EPO official languages on 26.07.1990 takes the place of the publication of the European patent application. | [1991/45] | Type: | B1 Patent specification | No.: | EP0454771 | Date: | 12.10.1994 | Language: | EN | [1994/41] | Search report(s) | International search report - published on: | US | 26.07.1990 | (Supplementary) European search report - dispatched on: | EP | 09.02.1993 | Classification | IPC: | G01V1/40, G01V1/36 | [1994/41] | CPC: |
G01V1/37 (EP,US);
G01V1/42 (EP,US);
G01V2210/161 (EP,US);
G01V2210/32 (EP,US)
|
| Former IPC [1991/45] | G01V1/40 | Designated contracting states | DE, FR, GB, IT, NL [1994/41] |
| Former [1991/45] | DE, FR, GB, IT, SE | Title | German: | GERÄUSCHREDUZIERUNGSVERFAHREN FÜR BOHRGESTÄNGESIGNALE | [1991/45] | English: | METHOD FOR REDUCING NOISE IN DRILL STRING SIGNALS | [1991/45] | French: | PROCEDE DE REDUCTION DE BRUIT DANS DES SIGNAUX DE TRAIN DE TIGES | [1991/45] | Entry into regional phase | 17.07.1991 | National basic fee paid | 17.07.1991 | Search fee paid | 17.07.1991 | Designation fee(s) paid | 17.07.1991 | Examination fee paid | Examination procedure | 23.08.1990 | Request for preliminary examination filed International Preliminary Examining Authority: DE | 17.07.1991 | Examination requested [1991/45] | 29.07.1993 | Despatch of a communication from the examining division (Time limit: M04) | 29.11.1993 | Reply to a communication from the examining division | 24.01.1994 | Despatch of communication of intention to grant (Approval: No) | 06.04.1994 | Despatch of communication of intention to grant (Approval: later approval) | 13.04.1994 | Communication of intention to grant the patent | 07.07.1994 | Fee for grant paid | 07.07.1994 | Fee for publishing/printing paid | Opposition(s) | 13.07.1995 | No opposition filed within time limit [1995/40] | Fees paid | Renewal fee | 17.12.1991 | Renewal fee patent year 03 | 14.12.1992 | Renewal fee patent year 04 | 22.12.1993 | 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 | [A]FR1584951 ; | [A]US4363112 (WIDROW BERNARD); | [A]WO8505696 (ELF AQUITAINE [FR]); | [A]EP0273722 (GAS RES INST [US]); | [AP]US4862423 (RECTOR JAMES W [US]) | International search | [A]US4254481 (SMITHER MILES A, et al); | [A]US4363112 (WIDROW BERNARD); | [A]US4718048 (STARON PHILIPPE [FR], et al) | Examination | US4254581 | EP0349262 |