Inventor
PENN JACK C
US9 patents
Patents
9 patentsUS4665398AMay 12, 1987
Method of sampling and recording information pertaining to a physical condition detected in a well bore
HALLIBURTON CO106 citations95
US4866607ASep 12, 1989
Self-contained downhole gauge system
HALLIBURTON CO91 citations94
US4905281AFeb 27, 1990
Security apparatus and method for computers connected to telephone circuits
HALLIBURTON CO36 citations92
US4709234ANov 24, 1987
Power-conserving self-contained downhole gauge system
HALLIBURTON CO55 citations92
US4575313AMar 11, 1986
Digital pressure controller
HALLIBURTON CO29 citations92
US5337234AAug 9, 1994
Self-contained downhole gauge system
HALLIBURTON CO22 citations91
US5153832AOct 6, 1992
Self-containing downhole gauge system
HALLIBURTON CO14 citations72
US4531189AJul 23, 1985
Data conversion, communication and analysis system
HALLIBURTON CO13 citations71
US4551766ANov 5, 1985
Optical reader
HALLIBURTON CO4 citations61