Patents by Inventor Walter Alexander Hartgers

Walter Alexander Hartgers 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).

  • Lubricating oil compositions comprising a biodiesel fuel and a Mannich condensation product
    Patent number: 10781394
    Abstract: This invention encompasses lubricating oil compositions comprising a base oil, a biodiesel fuel and a Mannich condensation product. A method for inhibiting viscosity increase in a diesel engine fueled at least in part with a biodiesel fuel is also described.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: September 22, 2020
    Assignees: CHEVRON ORONITE TECHNOLOGY B.V., CHEVRON ORONITE COMPANY LLC
    Inventors: Menno Anton Stefan Moniz, Walter Alexander Hartgers, Richard Hogendoorn, Moussa Echankouki, Peter Kleijwegt, Alexander B. Boffa, John Robert Miller
  • Lubricating oil compositions comprising a biodiesel fuel and a dispersant
    Patent number: 10344245
    Abstract: This invention encompasses lubricating oil compositions comprising a base oil, a biodiesel fuel and a dispersant. A method for inhibiting viscosity increase in a diesel engine fueled at least in part with a biodiesel fuel is also described.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: July 9, 2019
    Assignee: Chevron Oronite Technology B.V.
    Inventors: Menno Anton Stefan Moniz, Walter Alexander Hartgers, Richard Hogendoorn
  • LUBRICATING ENGINE OIL COMPOSITIONS CONTAINING DETERGENT COMPOUNDS
    Publication number: 20190002789
    Abstract: The present disclosure generally relates to a lubricating oil composition comprising an oil of lubricating viscosity, and an alkylhydroxybenzoate detergent compound.
    Type: Application
    Filed: June 28, 2018
    Publication date: January 3, 2019
    Inventors: Alexander Bowman Boffa, Walter Alexander Hartgers, Seyedeh Mahboobeh Hosseini, Jacob Daniel Ward, Christopher P. Le Deore, Brendan P. Miller, Xiaomin Helen Tu, Curtis Bay Campbell, Yue-Rong Li
  • LUBRICATING OIL COMPOSITIONS CONTAINING DETERGENT COMPOUNDS
    Publication number: 20190002791
    Abstract: The present disclosure generally relates to a lubricating oil composition comprising: a major amount of an oil of lubricating viscosity, and one or more detergents wherein at least one detergent is an alkylhydroxybenzoate compound.
    Type: Application
    Filed: June 28, 2018
    Publication date: January 3, 2019
    Inventors: Alexander Bowman Boffa, Walter Alexander Hartgers, Seyedeh Mahboobeh Hosseini, Curtis Bay Campbell
  • LUBRICATING OIL COMPOSITIONS COMPRISING A BIODIESEL FUEL AND A MANNICH CONDENSATION PRODUCT
    Publication number: 20180112146
    Abstract: This invention encompasses lubricating oil compositions comprising a base oil, a biodiesel fuel and a Mannich condensation product. A method for inhibiting viscosity increase in a diesel engine fueled at least in part with a biodiesel fuel is also described.
    Type: Application
    Filed: October 25, 2016
    Publication date: April 26, 2018
    Inventors: Menno Anton Stefan Moniz, Walter Alexander Hartgers, Richard Hogendoorn, Moussa Echankouki, Peter Kleijwegt, Alexander B. Boffa, John Robert Miller
  • LUBRICATING OIL COMPOSITIONS COMPRISING A BIODIESEL FUEL AND A DISPERSANT
    Publication number: 20180112145
    Abstract: This invention encompasses lubricating oil compositions comprising a base oil, a biodiesel fuel and a dispersant. A method for inhibiting viscosity increase in a diesel engine fueled at least in part with a biodiesel fuel is also described.
    Type: Application
    Filed: October 25, 2016
    Publication date: April 26, 2018
    Inventors: Menno Anton Stefan Moniz, Walter Alexander Hartgers, Richard Hogendoorn