Patents by Inventor David P. CLEAVER

David P. CLEAVER 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).

  • Fuel additives to maintain optimum injector performance
    Patent number: 9523057
    Abstract: A diesel fuel additive package, diesel fuel containing the additive and methods for operating an engine on the diesel fuel and additive. The fuel additive includes a reaction product of (a) a hydrocarbyl substituted dicarboxylic acid or anhydride, and (b) an amine compound or salt thereof of the formula wherein R is selected from hydrogen and a hydrocarbyl group containing from about 1 to about 15 carbon atoms, and R1 is selected from hydrogen and a hydrocarbyl group containing from about 1 to about 20 carbon atoms. The reaction product contains at least one amino triazole group. Component (2) of the additive is a hydrocarbyl succinimide dispersant. The additive also includes (3) a C2 to C10 alkyl alcohol; and (4) optionally, a lubricity additive. In the additive, a weight ratio of component (1) to component (2) in the fuel ranges from about 1:3 to about 1:5.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: December 20, 2016
    Assignee: Afton Chemical Corporation
    Inventors: James Wager, David P. Cleaver, Matthew H. Lindner, Julienne M. Galante-Fox, Scott D. Schwab, John Bennett
  • FUEL ADDITIVES TO MAINTAIN OPTIMUM INJECTOR PERFORMANCE
    Publication number: 20120210966
    Abstract: A diesel fuel additive package, diesel fuel containing the additive and methods for operating an engine on the diesel fuel and additive. The fuel additive includes a reaction product of (a) a hydrocarbyl substituted dicarboxylic acid or anhydride, and (b) an amine compound or salt thereof of the formula wherein R is selected from hydrogen and a hydrocarbyl group containing from about 1 to about 15 carbon atoms, and R1 is selected from hydrogen and a hydrocarbyl group containing from about 1 to about 20 carbon atoms. The reaction product contains at least one amino triazole group. Component (2) of the additive is a hydrocarbyl succinimide dispersant. The additive also includes (3) a C2 to C10 alkyl alcohol; and (4) optionally, a lubricity additive. In the additive, a weight ratio of component (1) to component (2) in the fuel ranges from about 1:3 to about 1:5.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 23, 2012
    Applicant: AFTON CHEMICAL CORPORATION
    Inventors: James WAGER, David P. CLEAVER, Matthew H. LINDNER, Julienne M. GALANTE-FOX, Scott D. SCHWAB, John BENNETT