(19)
(11) EP 1 996 964 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
19.06.2019 Bulletin 2019/25

(45) Mention of the grant of the patent:
13.02.2019 Bulletin 2019/07

(21) Application number: 07753637.3

(22) Date of filing: 21.03.2007
(51) International Patent Classification (IPC): 
G01V 3/00(2006.01)
G01R 33/12(2006.01)
 G01V 3/18(2006.01)
(86) International application number:
PCT/US2007/007027
(87) International publication number:
WO 2007/109325 (27.09.2007 Gazette 2007/39)

(54)

MAGNETIC HEAD FOR CONDUCTIVITY IMAGING FOR USE IN BOREHOLES

MAGNETKOPF FÜR LEITFÄHIGKEITSBILDGEBUNG ZUR VERWENDUNG IN BOHRLÖCHERN

TETE MAGNETIQUE POUR IMAGERIE DE CONDUCTIVITE DESTINEE A ETRE UTILISEE DANS LES FORAGES

(84) Designated Contracting States:
FR GB

(30) Priority: 21.03.2006 US 784164 P
05.10.2006 US 538935

(43) Date of publication of application:
03.12.2008 Bulletin 2008/49

(73) Proprietor: Baker Hughes, a GE company, LLC
Houston, TX 77073 (US)

(72) Inventors:
  • REIDERMAN, Arcady
    Houston, TX 77094 (US)
  • BEARD, David
    Houston, TX 77042 (US)

(74) Representative: BRP Renaud & Partner mbB Rechtsanwälte Patentanwälte Steuerberater 
Königstraße 28
70173 Stuttgart
70173 Stuttgart (DE)


(56) References cited: : 
US-A- 2 693 508
US-A- 5 734 535
US-A1- 2005 242 819
 US-A- 4 536 713
US-A1- 2003 117 142
US-B2- 6 815 954
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).