Assignee
VECTOR MAGNETICS INC
US16 patents
Top patents by PatentIndex Score
US5923170AJul 13, 1999
Method for near field electromagnetic proximity determination for guidance of a borehole drill
VECTOR MAGNETICS INC335 citations99
US5676212AOct 14, 1997
Downhole electrode for well guidance system
VECTOR MAGNETICS INC237 citations99
US5657826AAug 19, 1997
Guidance system for drilling boreholes
VECTOR MAGNETICS INC151 citations99
US5589775ADec 31, 1996
Rotating magnet for distance and direction measurements from a first borehole to a second borehole
VECTOR MAGNETICS INC449 citations99
US5512830AApr 30, 1996
Measurement of vector components of static field perturbations for borehole location
VECTOR MAGNETICS INC187 citations99
US5485089AJan 16, 1996
Method and apparatus for measuring distance and direction by movable magnetic field source
VECTOR MAGNETICS INC355 citations99
US5258755ANov 2, 1993
Two-source magnetic field guidance system
VECTOR MAGNETICS INC180 citations99
US5074365ADec 24, 1991
Borehole guidance system having target wireline
VECTOR MAGNETICS INC204 citations99
US4700142AOct 13, 1987
Method for determining the location of a deep-well casing by magnetic field sensing
VECTOR MAGNETICS INC239 citations99
USRE36569EFeb 15, 2000
Method and apparatus for measuring distance and direction by movable magnetic field source
VECTOR MAGNETICS INC97 citations98
US5515931AMay 14, 1996
Single-wire guidance system for drilling boreholes
VECTOR MAGNETICS INC109 citations98
US5513710AMay 7, 1996
Solenoid guide system for horizontal boreholes
VECTOR MAGNETICS INC149 citations98
US5305212AApr 19, 1994
Alternating and static magnetic field gradient measurements for distance and direction determination
VECTOR MAGNETICS INC138 citations98
US6234259B1May 22, 2001
Multiple cam directional controller for steerable rotary drill
VECTOR MAGNETICS INC126 citations96
US6939186B1Sep 6, 2005
Rolling heel, forward facing rowing system
VECTOR MAGNETICS INC28 citations93
US5725059AMar 10, 1998
Method and apparatus for producing parallel boreholes
VECTOR MAGNETICS INC137 citations91