Inventor · disambiguated record
Irvin D. Johnson
Also filed as: JOHNSON IRVIN D
9 granted patents·350 citations·filing 1978–1988
91Inventor score
Files withMARATHON OIL CO9
Top patents by PatentIndex Score
9 records- 0193US4390836AMethod and apparatus for the detection of pipeline holidaysMARATHON OIL CO·Filed 1980·Granted Jun 28, 1983·90 cites·10 claims
- 0288US4644263AMethod and apparatus for measuring water in crude oilMARATHON OIL CO·Filed 1984·Granted Feb 17, 1987·54 cites·20 claims
- 0386US4176052AApparatus and method for controlling the rate of feeding a petroleum product to a coking drum systemMARATHON OIL CO·Filed 1978·Granted Nov 27, 1979·58 cites·13 claims
- 0476US4576042AFlow basketMARATHON OIL CO·Filed 1984·Granted Mar 18, 1986·48 cites·16 claims
- 0575US4404843ACryogenic storage tank leak detection systemMARATHON OIL CO·Filed 1981·Granted Sep 20, 1983·36 cites·15 claims
- 0651US4809778AOil well tool for in situ release of wellbore treatment fluidMARATHON OIL CO·Filed 1987·Granted Mar 7, 1989·21 cites·16 claims
- 0749US4790386AMethod and means for introducing treatment composition into a well boreMARATHON OIL CO·Filed 1988·Granted Dec 13, 1988·20 cites·16 claims
- 0845US4581927ASelf-contained bore hole flow measurement system and method thereforMARATHON OIL CO·Filed 1984·Granted Apr 15, 1986·14 cites·13 claims
- 0937US4314476AWell fluid velocity measurement method and systemMARATHON OIL CO·Filed 1980·Granted Feb 9, 1982·9 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →