Inventor
JOHNSON IRVIN D
US9 patents
Patents
9 patentsUS4644263AFeb 17, 1987
Method and apparatus for measuring water in crude oil
MARATHON OIL CO54 citations95
US4390836AJun 28, 1983
Method and apparatus for the detection of pipeline holidays
MARATHON OIL CO90 citations94
US4576042AMar 18, 1986
Flow basket
MARATHON OIL CO48 citations91
US4176052ANov 27, 1979
Apparatus and method for controlling the rate of feeding a petroleum product to a coking drum system
MARATHON OIL CO58 citations91
US4404843ASep 20, 1983
Cryogenic storage tank leak detection system
MARATHON OIL CO36 citations84
US4809778AMar 7, 1989
Oil well tool for in situ release of wellbore treatment fluid
MARATHON OIL CO21 citations81
US4790386ADec 13, 1988
Method and means for introducing treatment composition into a well bore
MARATHON OIL CO20 citations81
US4581927AApr 15, 1986
Self-contained bore hole flow measurement system and method therefor
MARATHON OIL CO14 citations72
US4314476AFeb 9, 1982
Well fluid velocity measurement method and system
MARATHON OIL CO9 citations72