Inventor
SPIES BRIAN R
US8 patents
Patents
8 patentsUS4980682ADec 25, 1990
Method of reducing noise in a borehole electromagnetic telemetry system
ATLANTIC RICHFIELD CO76 citations94
US4996484AFeb 26, 1991
Method and apparatus for cancelling powerline noise in geophysical electromagnetic exploration
ATLANTIC RICHFIELD CO32 citations91
US4990851AFeb 5, 1991
Transient electromagnetic method for detecting irregularities on conductive containers
ATLANTIC RICHFIELD CO56 citations91
US4929898AMay 29, 1990
Transient electromagnetic method for detecting irregularities on conductive containers
ATLANTIC RICHFIELD CO30 citations91
US4843320AJun 27, 1989
Transient electromagnetic method for detecting corrosion on conductive containers
ATLANTIC RICHFIELD CO48 citations91
US4839593AJun 13, 1989
Transient electromagnetic method for directly detecting corrosion on conductive containers
ATLANTIC RICHFIELD CO41 citations91
US4837514AJun 6, 1989
Method of reducing noise in electromagnetic geophysical exploration data
ATLANTIC RICHFIELD CO28 citations91
US4945309AJul 31, 1990
Method of reducing impulsive noise in electromagnetic geophysical data
ATLANTIC RICHFIELD CO8 citations72