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).

  • Patent number: 10808195
    Abstract: 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: Grant
    Filed: September 20, 2016
    Date of Patent: October 20, 2020
    Assignee: SHELL OIL COMPANY
    Inventors: Amir Faizal Naidu Abdul-Manan, Paul Anthony Stevenson, Richard John Heins, Richard Hugh Clark, Robert Wilfred Matthews Wardle
  • Patent number: 10494376
    Abstract: A compound of formula I wherein: n is 1 or 2: p is 0 or 1; R1 is optionally one or more halo or methyl groups; R2a and R2b are independently selected from the group consisting of: (i) F; (ii) H; (iii) Me; and (iv) CH2OH; R2c and R2d are independently selected from the group consisting of: (i) F; (ii) H; (iii) Me; and (iv) CH2OH; R3a and R3b are independently selected from H and Me; R4 is either H or Me; R5 is either H or Me; R6a and R6b are independently selected from H and Me; A is either (i) optionally substituted phenyl; (ii) optionally substituted naphthyl; or (iii) optionally substituted C5-12 heteroaryl.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: December 3, 2019
    Assignee: CTXT PTY. LTD.
    Inventors: Ylva Elisabet Bergman, Richard Charles Foitzik, Benjamin Joseph Morrow, Michelle Ang Camerino, Scott Raymond Walker, H. Rachel Lagiakos, John Feutrill, Graeme Irvine Stevenson, Paul Anthony Stupple
  • Publication number: 20190345688
    Abstract: A subsea clearance apparatus (1) includes a chassis (2), fore and aft skids (3, 4) spaced along a principal axis (P) of the apparatus (1), and a pair of flanks (22a, 22b) with a plurality of tines (5) depending from the flanks (22a, 22b). The tines (5) are spaced transversely with respect to the principal axis (P) and pitched toward the fore of the apparatus (1). In use, the chassis (2) is spaced from the seabed (S) by the skids (3, 4) as the apparatus (1) is propelled therealong such that the tines (5) engage and deflect away from the principle axis (P) obstructions which are larger than a predetermined size and which protrude by a predetermined amount from the seabed (S).
    Type: Application
    Filed: May 8, 2018
    Publication date: November 14, 2019
    Inventors: PAUL ANTHONY CROWTHER, James Andrew Stevenson
  • Patent number: 10407637
    Abstract: 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: Grant
    Filed: August 12, 2016
    Date of Patent: September 10, 2019
    Assignee: SHELL OIL COMPANY
    Inventors: Richard Hugh Clark, James Patrick Ewen, Richard John Heins, Paul Anthony Stevenson
  • Publication number: 20180346837
    Abstract: 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: Application
    Filed: September 20, 2016
    Publication date: December 6, 2018
    Applicant: SHELL OIL COMPANY
    Inventors: Amir Faizal Naidu ABDUL-MANAN, Paul Anthony STEVENSON, Richard John HEINS, Richard Hugh CLARK, Robert Wilfred Matthews WARDLE
  • Publication number: 20180237711
    Abstract: 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: Application
    Filed: August 12, 2016
    Publication date: August 23, 2018
    Inventors: Richard Hugh CLARK, James Patrick EWEN, Richard John HEINS, Paul Anthony STEVENSON
  • Patent number: 10041013
    Abstract: 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: Grant
    Filed: December 19, 2013
    Date of Patent: August 7, 2018
    Assignee: SHELL OIL COMPANY
    Inventors: Mylin Camero, Mary Ann Dahlstrom, Paul Anthony Stevenson
  • Publication number: 20150368576
    Abstract: 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: Application
    Filed: June 17, 2015
    Publication date: December 24, 2015
    Inventors: Ratchatapong BOONWATSAKUL, Richard Hugh CLARK, Paul Anthony STEVENSON
  • Publication number: 20150315507
    Abstract: 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: Application
    Filed: December 19, 2013
    Publication date: November 5, 2015
    Inventors: Mylin CAMERO, Mary Ann DAHLSTROM, Paul Anthony STEVENSON
  • Patent number: 9017429
    Abstract: 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: Grant
    Filed: December 28, 2009
    Date of Patent: April 28, 2015
    Assignee: Shell Oil Company
    Inventors: Claire Griffiths, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
  • Publication number: 20150021232
    Abstract: 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: Application
    Filed: July 14, 2014
    Publication date: January 22, 2015
    Inventors: Richard Hugh Clark, James Patrick EWEN, Robert Wilfred Matthews WARDLE, Balasubramanian CHINNUSAMY, Paul Anthony STEVENSON
  • Patent number: 8771385
    Abstract: 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: Grant
    Filed: December 28, 2009
    Date of Patent: July 8, 2014
    Assignee: Shell Oil Company
    Inventors: Claire Griffins, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
  • Publication number: 20120090224
    Abstract: 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: Application
    Filed: December 28, 2009
    Publication date: April 19, 2012
    Applicant: DSM IP ASSETS B.V.
    Inventors: Claire Greffins, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
  • Publication number: 20120005950
    Abstract: 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: Application
    Filed: December 28, 2009
    Publication date: January 12, 2012
    Inventors: Claire Griffiths, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Wilfred Matthews Wardle
  • Publication number: 20110284117
    Abstract: 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: Application
    Filed: September 26, 2008
    Publication date: November 24, 2011
    Inventors: Claire Ansell, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
  • Patent number: 7229481
    Abstract: 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: Grant
    Filed: November 12, 2003
    Date of Patent: June 12, 2007
    Assignee: Shell Oil Company
    Inventors: Richard Hugh Clark, Christopher Morley, Paul Anthony Stevenson
  • Publication number: 20040194367
    Abstract: 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: Application
    Filed: November 12, 2003
    Publication date: October 7, 2004
    Inventors: Richard Hugh Clark, Christopher Morley, Paul Anthony Stevenson