Patents by Inventor Paul Anthony Stevenson
Paul Anthony Stevenson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10808195Abstract: Gasoline fuel composition suitable for use in an internal combustion engine comprising: (a) Fischer-Tropsch derived naphtha at a level from 2 to 20% v/v; (b) at least one aromatic octane booster present at a level of 0.75 to 8% v/v or less; and (c) a gasoline base fuel; wherein the gasoline fuel composition comprises 40% v/v or less of aromatics. In a preferred embodiment, the Research Octane Number (RON) of the gasoline fuel composition is increased while maintaining the aromatic content of the gasoline fuel composition at a level of 40% v/v or less, based on the gasoline fuel composition.Type: GrantFiled: September 20, 2016Date of Patent: October 20, 2020Assignee: SHELL OIL COMPANYInventors: Amir Faizal Naidu Abdul-Manan, Paul Anthony Stevenson, Richard John Heins, Richard Hugh Clark, Robert Wilfred Matthews Wardle
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Patent number: 10407637Abstract: Diesel fuel composition suitable for use in an internal combustion engine comprising: (a) 2 mass % to 30 mass % of kerosene having a kinematic viscosity at 40° C. of 1.5 mm2/s or less and a density of 810 kg/m3 or less; (b) 2 mass % to 20 mass % of Fischer-Tropsch derived base oil having a kinematic viscosity at 40° C. of 7.5 mm2/s or greater and a density of 790 kg/m3 or greater; and (c) diesel base fuel. The diesel fuel composition of the present invention provides improved cold flow properties while simultaneously maintaining other properties such as viscosity and density within diesel fuel specification requirements.Type: GrantFiled: August 12, 2016Date of Patent: September 10, 2019Assignee: SHELL OIL COMPANYInventors: Richard Hugh Clark, James Patrick Ewen, Richard John Heins, Paul Anthony Stevenson
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Publication number: 20180346837Abstract: Gasoline fuel composition suitable for use in an internal combustion engine comprising: (a) Fischer-Tropsch derived naphtha at a level from 2 to 20% v/v; (b) at least one aromatic octane booster present at a level of 0.75 to 8% v/v or less; and (c) a gasoline base fuel; wherein the gasoline fuel composition comprises 40% v/v or less of aromatics. In a preferred embodiment, the Research Octane Number (RON) of the gasoline fuel composition is increased while maintaining the aromatic content of the gasoline fuel composition at a level of 40% v/v or less, based on the gasoline fuel composition.Type: ApplicationFiled: September 20, 2016Publication date: December 6, 2018Applicant: SHELL OIL COMPANYInventors: Amir Faizal Naidu ABDUL-MANAN, Paul Anthony STEVENSON, Richard John HEINS, Richard Hugh CLARK, Robert Wilfred Matthews WARDLE
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Publication number: 20180237711Abstract: Diesel fuel composition suitable for use in an internal combustion engine comprising: (a) 2 mass % to 30 mass % of kerosene having a kinematic viscosity at 40° C. of 1.5 mm2/s or less and a density of 810 kg/m3 or less; (b) 2 mass % to 20 mass % of Fischer-Tropsch derived base oil having a kinematic viscosity at 40° C. of 7.5 mm2/s or greater and a density of 790 kg/m3 or greater; and (c) diesel base fuel. The diesel fuel composition of the present invention provides improved cold flow properties while simultaneously maintaining other properties such as viscosity and density within diesel fuel specification requirements.Type: ApplicationFiled: August 12, 2016Publication date: August 23, 2018Inventors: Richard Hugh CLARK, James Patrick EWEN, Richard John HEINS, Paul Anthony STEVENSON
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Patent number: 10041013Abstract: A fuel composition comprising a Fischer-Tropsch derived middle distillate fuel and a middle distillate flow improver, the remainder being another fuel component or mixture of fuel components. The other fuel component is selected from petroleum derived middle distillate fuel, hydrogenated vegetable oil, fatty acid methyl esters, and other Fischer Tropsch products. The Fischer-Tropsch derived middle distillate fuel is more than 80% v/v of the total composition; the maximum weight content in the carbon number distribution of the n-paraffins in the Fischer-Tropsch derived middle distillate fuel is below C16 and the weight ratio of iso to normal paraffins in the Fischer-Tropsch derived middle distillate fuel is 3.5:1 or higher. The middle distillate flow improver is a substituted ethylene polymer.Type: GrantFiled: December 19, 2013Date of Patent: August 7, 2018Assignee: SHELL OIL COMPANYInventors: Mylin Camero, Mary Ann Dahlstrom, Paul Anthony Stevenson
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Publication number: 20150368576Abstract: A method of operating a diesel fuel-consuming system, and/or apparatus which is driven by such a system, the method comprising introducing into the system a diesel fuel formulation containing 10% v/v or more of paraffinic hydrocarbons and an antioxidant and a species selected from: (iii) detergents; (iv) mixtures containing both a lubricity improver and a conductivity improver; and (v) combinations of (i) and (ii). The methods results in an increase in the oxidative stability of the formulation and/or in a reduction of the concentration of an antioxidant which is present in the formulation. The formulation may comprise a Fischer-Tropsch derived diesel fuel component or mixture thereof.Type: ApplicationFiled: June 17, 2015Publication date: December 24, 2015Inventors: Ratchatapong BOONWATSAKUL, Richard Hugh CLARK, Paul Anthony STEVENSON
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Publication number: 20150315507Abstract: A fuel composition comprising a Fischer-Tropsch derived middle distillate fuel and a middle distillate flow improver, the remainder being another fuel component or mixture of fuel components. The other fuel component is selected from petroleum derived middle distillate fuel, hydrogenated vegetable oil, fatty acid methyl esters, and other Fischer Tropsch products. The Fischer-Tropsch derived middle distillate fuel is more than 80% v/v of the total composition; the maximum weight content in the carbon number distribution of the n-paraffins in the Fischer-Tropsch derived middle distillate fuel is below C16 and the weight ratio of iso to normal paraffins in the Fischer-Tropsch derived middle distillate fuel is 3.5:1 or higher. The middle distillate flow improver is a substituted ethylene polymer.Type: ApplicationFiled: December 19, 2013Publication date: November 5, 2015Inventors: Mylin CAMERO, Mary Ann DAHLSTROM, Paul Anthony STEVENSON
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Patent number: 9017429Abstract: Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R4 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; and X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.Type: GrantFiled: December 28, 2009Date of Patent: April 28, 2015Assignee: Shell Oil CompanyInventors: Claire Griffiths, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
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Publication number: 20150021232Abstract: A fuel composition is prepared by blending a petroleum derived low sulphur diesel with a Fischer-Tropsch derived gasoil and a Fischer-Tropsch derived base oil wherein the amount of the petroleum derived low sulphur diesel is from 60% up to 80% v/v of the total composition; the amount of Fischer-Tropsch derived gasoil is from 10% up to 30% v/v of the total composition; the amount of Fischer-Tropsch derived base oil is from 10% up to 30% v/v of the total composition; the amounts of the Fischer-Tropsch derived gas oil and Fischer-Tropsch derived base oil together being at least 20% v/v of the total composition. The fuel compositions of the invention have improved properties, in terms that they display increased power when compared to fuel compositions in which the Fischer-Tropsch derived base oil component is not present.Type: ApplicationFiled: July 14, 2014Publication date: January 22, 2015Inventors: Richard Hugh Clark, James Patrick EWEN, Robert Wilfred Matthews WARDLE, Balasubramanian CHINNUSAMY, Paul Anthony STEVENSON
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Patent number: 8771385Abstract: Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R5 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.Type: GrantFiled: December 28, 2009Date of Patent: July 8, 2014Assignee: Shell Oil CompanyInventors: Claire Griffins, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
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Publication number: 20120090224Abstract: Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R5 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.Type: ApplicationFiled: December 28, 2009Publication date: April 19, 2012Applicant: DSM IP ASSETS B.V.Inventors: Claire Greffins, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
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Publication number: 20120005950Abstract: Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R4 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; and X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.Type: ApplicationFiled: December 28, 2009Publication date: January 12, 2012Inventors: Claire Griffiths, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Wilfred Matthews Wardle
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Publication number: 20110284117Abstract: A system comprising a liner at an interior of the pipe; at least one dry fiber tri-axial braid layer exterior to the liner, the tri-axial braid layer comprising a plurality of axial fibers, a plurality of clockwise fibers, and a plurality of counterclockwise fibers.Type: ApplicationFiled: September 26, 2008Publication date: November 24, 2011Inventors: Claire Ansell, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
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Patent number: 7229481Abstract: A water-in-fuel emulsion composition containing a Fischer-Tropsch derived fuel and water, and its use in a compression ignition engine is provided. Emissions, for example of NOx, black smoke and/or particulate matter, are lower as compared to conventional fuels but without lengthening the ignition delay and reducing the cetane number. This is achieved without the need for, or at reduced levels of, ignition improving additives, and without engine modifications.Type: GrantFiled: November 12, 2003Date of Patent: June 12, 2007Assignee: Shell Oil CompanyInventors: Richard Hugh Clark, Christopher Morley, Paul Anthony Stevenson
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Publication number: 20040194367Abstract: A water-in-fuel emulsion composition containing a Fischer-Tropsch derived fuel and water, and its use in a compression ignition engine is provided. Emissions, for example of NOx, black smoke and/or particulate matter, are lower as compared to conventional fuels but without lengthening the ignition delay and reducing the cetane number. This is achieved without the need for, or at reduced levels of, ignition improving additives, and without engine modifications.Type: ApplicationFiled: November 12, 2003Publication date: October 7, 2004Inventors: Richard Hugh Clark, Christopher Morley, Paul Anthony Stevenson