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EP0484948
European procedure
Extract from the Register of European Patents
EP About this file: EP0484948
| EP0484948 - Robust electrical heating systems for mineral wells [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 19.12.1997 Database last updated on 27.07.2024 | Most recent event Tooltip | 19.12.1997 | No opposition filed within time limit | published on 04.02.1998 [1998/06] | Applicant(s) | For all designated states UENTECH CORPORATION 7737 E. 42nd Place Tulsa Oklahoma 74145 / US | [N/P] |
| Former [1992/20] | For all designated states UENTECH CORPORATION 7737 E. 42nd Place Tulsa, Oklahoma 74145 / US | Inventor(s) | 01 /
Bridges, Jack E. 1937 Fendon Lane Park Ridge, Ill.60068 / US | 02 /
Bajzek, Thomas J. 164 N.Walnut Wood Dale, Ill.60191 / US | 03 /
Hofer, Kenneth E. 10601 Orchard Lane Chicago Ridge, Ill.60415 / US | 04 /
Spencer, Homer L. 220 Pump Hill Rise S.W. Calgary, Alberta 22PT2P4C8 / CA | 05 /
Smith, Larry G. 24 Edforth Road N.W. Calgary, Alberta T2A3V7 / CA | 06 /
Young, Vincent R. 5435 LaSalle Cres.S.W. Calgary, Alberta T3E5Y6 / CA | [1992/20] | Representative(s) | Heusler, Wolfgang, et al V. Bezold & Partner Patentanwälte - PartG mbB Akademiestrasse 7 80799 München / DE | [N/P] |
| Former [1992/20] | Heusler, Wolfgang, Dipl.-Ing., et al Dr. Dieter von Bezold Dipl.-Ing. Peter Schütz Dipl.-Ing. Wolfgang Heusler Brienner Strasse 52 D-80333 München / DE | Application number, filing date | 91119011.4 | 07.11.1991 | [1992/20] | Priority number, date | US19900610080 | 07.11.1990 Original published format: US 610080 | [1992/20] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0484948 | Date: | 13.05.1992 | Language: | EN | [1992/20] | Type: | A3 Search report | No.: | EP0484948 | Date: | 09.06.1993 | Language: | EN | [1993/23] | Type: | B1 Patent specification | No.: | EP0484948 | Date: | 12.02.1997 | Language: | EN | [1997/07] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 20.04.1993 | Classification | IPC: | E21B36/04, E21B17/00, E21B43/24 | [1993/23] | CPC: |
E21B36/04 (EP,US);
H05B3/0004 (EP,US);
H05B3/03 (EP,US);
H05B2214/03 (EP,US)
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| Former IPC [1992/20] | E21B36/04, E21B17/00 | Designated contracting states | DE, GB, NL [1992/20] | Title | German: | Robustes, elektrisches Heizsystem für Mineralölbohrungen | [1992/20] | English: | Robust electrical heating systems for mineral wells | [1992/20] | French: | Système robuste de chauffage électrique pour puits d'huile minérale | [1997/07] |
| Former [1992/20] | Système solide de chauffage électrique pour puits minérales | Examination procedure | 30.11.1993 | Examination requested [1994/04] | 10.03.1995 | Despatch of a communication from the examining division (Time limit: M06) | 22.08.1995 | Reply to a communication from the examining division | 15.11.1995 | Despatch of a communication from the examining division (Time limit: M04) | 10.01.1996 | Reply to a communication from the examining division | 14.05.1996 | Despatch of communication of intention to grant (Approval: No) | 06.08.1996 | Despatch of communication of intention to grant (Approval: later approval) | 12.08.1996 | Communication of intention to grant the patent | 11.10.1996 | Fee for grant paid | 11.10.1996 | Fee for publishing/printing paid | Opposition(s) | 13.11.1997 | No opposition filed within time limit [1998/06] | Fees paid | Renewal fee | 24.11.1993 | Renewal fee patent year 03 | 25.11.1994 | Renewal fee patent year 04 | 23.11.1995 | Renewal fee patent year 05 | 29.11.1996 | Renewal fee patent year 06 |
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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]US3420301 (RILEY OREY L, et al); | [A]US4463805 (BINGHAM CLARK [US]); | [A]US4484627 (PERKINS THOMAS K [US]); | [A]US4662437 (RENFRO JIMMIE J [US]); | [X]US4790375 (BRIDGES JACK E [US], et al); | [A]US4834174 (VANDEVIER JOSEPH E [US]); | [A]EP0387852 (UENTECH CORP [US]) |