Inventor · disambiguated record
Marshall D. Bishop
Also filed as: BISHOP MARSHALL D
21 granted patents·3 pending applications·273 citations·filing 1986–2024
94Inventor score
Files withPHILLIPS PETROLEUM CO10CHEVRON PHILLIPS CHEMICAL CO LP9CHEVRON PHILLIPS CHEMICAL CO3CONOCOPHILLIPS CO1HARRIS JEFFERY R1
Top patents by PatentIndex Score
24 records- 0194US5925182AStable liquid suspension compositionsPHILLIPS PETROLEUM CO·Filed 1998·Granted Jul 20, 1999·70 cites·19 claims
- 0291US5834533AStable liquid suspension compositionsPHILLIPS PETROLEUM CO·Filed 1996·Granted Nov 10, 1998·49 cites·27 claims
- 0380US6547710B1Sulfonated rubber compositions and processes therefor and therewithCONOCOPHILLIPS CO·Filed 2000·Granted Apr 15, 2003·13 cites·75 claims
- 0477US5091448ASuspending medium for water soluble polymerPHILLIPS PETROLEUM CO·Filed 1990·Granted Feb 25, 1992·36 cites·26 claims
- 0576US4735659ACompositions and a process for preparing water dispersible polymersPHILLIPS PETROLEUM CO·Filed 1986·Granted Apr 5, 1988·22 cites·22 claims
- 0672US12435256B1Combination clay stabilizer having an alkali metal asphalt sulfonate and quaternary ammonium saltCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2024·Granted Oct 7, 2025·0 cites·18 claims
- 0771US10787599B2Sulfur-containing polyether surfactants for cement spacer fluids and other downhole applicationsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2018·Granted Sep 29, 2020·1 cites·21 claims
- 0871US5073253AFroth level measurementPHILLIPS PETROLEUM CO·Filed 1990·Granted Dec 17, 1991·30 cites·15 claims
- 0970US9328280B2Additives for oil-based drilling fluidsCHEVRON PHILLIPS CHEMICAL CO·Filed 2013·Granted May 3, 2016·2 cites·26 claims
- 1069US5631313ASuspending medium for particulate materialPHILLIPS PETROLEUM CO·Filed 1991·Granted May 20, 1997·24 cites·20 claims
- 1169US4726912AStable suspensions of carboxymethyl cellulose and their preparationPHILLIPS PETROLEUM CO·Filed 1986·Granted Feb 23, 1988·20 cites·9 claims
- 1266US11834594B2Methods for drilling wellbores using thinner compositionsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2021·Granted Dec 5, 2023·0 cites·25 claims
- 1364US12049585B2Wellbore drilling compositionsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2021·Granted Jul 30, 2024·0 cites·20 claims
- 1463US11078395B2Wellbore drilling compositionsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2019·Granted Aug 3, 2021·0 cites·13 claims
- 1562US11814569B2Drilling fluid lubricantsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2022·Granted Nov 14, 2023·0 cites·20 claims
- 1660US11008497B2Sulfur-containing polyether surfactants for cement spacer fluids and other downhole applicationsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2020·Granted May 18, 2021·0 cites·20 claims
- 1759US11098230B2Methods for drilling wellbores using thinner compositionsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2020·Granted Aug 24, 2021·0 cites·25 claims
- 1850US5041599ACatalytic synthesis of thionocarbamates from xanthates and aminesPHILLIPS PETROLEUM CO·Filed 1990·Granted Aug 20, 1991·5 cites·12 claims
- 1945US2014094394A1High Density Weight Materials for Oil Field Servicing OperationsCHEVRON PHILLIPS CHEMICAL CO·Filed 2012·Application pending·0 cites
- 2044US2021246352A1Wellbore drilling compositionsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2021·Application pending·0 cites
- 2142US2009145809A1Compositions for oil recovery and methods of using sameCHEVRON PHILLIPS CHEMICAL CO·Filed 2007·Application pending·0 cites
- 2241US8759260B2Wellbore fluid additives and methods of producing the sameHARRIS JEFFERY R·Filed 2010·Granted Jun 24, 2014·0 cites·38 claims
- 2330US5132008APreparation of bis(alkylthio) alkanes or bis(arylthio) alkanes and use thereofPHILLIPS PETROLEUM CO·Filed 1991·Granted Jul 21, 1992·1 cites·8 claims
- 2417US6159886AClay composition containing a tannin and a method for producing bricks therefromPHILLIPS PETROLEUM CO·Filed 1999·Granted Dec 12, 2000·0 cites·40 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →