Inventor · disambiguated record
Roy B. Duke
Also filed as: DUKE JR ROY B · DUKE ROY B
5 granted patents·98 citations·filing 1975–1982
81Inventor score
Files withMARATHON OIL CO5
Top patents by PatentIndex Score
5 records- 0183US4439345ADemulsification of a crude oil middle phase emulsionMARATHON OIL CO·Filed 1981·Granted Mar 27, 1984·49 cites·15 claims
- 0263US4384977APolyalkyloxyamines as demulsifying agentsMARATHON OIL CO·Filed 1981·Granted May 24, 1983·22 cites·26 claims
- 0362US4396530AMineral acid demulsification of surfactant-containing emulsionMARATHON OIL CO·Filed 1981·Granted Aug 2, 1983·21 cites·11 claims
- 0445US3948968APreparation of nitriles from carboxylic acidsMARATHON OIL CO·Filed 1975·Granted Apr 6, 1976·2 cites·10 claims
- 0531US4414119AInjectivity of crude oil and petroleum sulfonate slugs by the addition of an alkylbenzene sulfonateMARATHON OIL CO·Filed 1982·Granted Nov 8, 1983·4 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →