Patents by Inventor Robert J. Hartle

Robert J. Hartle 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 oils containing molybdenyl chelates
    Patent number: 4383931
    Abstract: The antifriction properties of a lubricating oil are enhanced by the addition of a minor amount of an oil-soluble molybdenyl bis-.beta.-diketonate. The antifriction properties are particularly enhanced when the molybdenyl bis-.beta.-diketonate is used in combination with an oil-soluble active sulfur donor, such as a zinc dialkyldithiophosphate.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: May 17, 1983
    Assignee: Gulf Research & Development Company
    Inventors: Yumi P. Ryu, Robert J. Hartle
  • Diesel fuel compositions containing certain azides for improved cetane number
    Patent number: 4280819
    Abstract: Diesel fuel compositions which contain minor amounts of azides having the formula:X=N.sup.+ =N.sup.-where X is selected from the group consisting of ##STR1## where R and R' can be the same or different and are selected from the group consisting of hydrogen; alkyl straight- and branched chain hydrocarbons having from 1 to 8 carbon atoms; alkoxy groups having from 1 to 8 carbon atoms; aryl; aryloxy; nitro; hydroxy; halo; amino (except ortho to the azido); alkylamino; acyl groups having from 2 to 8 carbon atoms; alkylamido; and carbalkoxy. The minor amount of the azides in part improved cetane numbers (low ignition delay) to the diesel fuel.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: July 28, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Robert J. Hartle, Gary M. Singerman
  • Gasoline composition containing aryl o-aminoazides
    Patent number: 4266947
    Abstract: Gasoline motor fuel compositions which contain minor amounts of an aryl o-aminoazide, such as o-azidoaniline, to impart improved antiknock characteristics and greater oxidation stability to the gasoline.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: May 12, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Robert J. Hartle, Gary M. Singerman
  • Suppressing the octane requirement increase of an automobile engine
    Patent number: 4264335
    Abstract: The octane requirement increase of a gasoline fired internal combustion engine is suppressed by the incorporation in the gasoline fed to the engine of a minor amount of cerium (III) or cerium (IV) 2-ethylhexanoate.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: April 28, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Charles Bello, Robert J. Hartle, Gary M. Singerman
  • Gasoline fuel compositions containing antiknock additive
    Patent number: 4211535
    Abstract: A gasoline motor fuel possessing improved antiknock characteristics contains a minor amount of an aliphatic .beta.-diketone and a minor amount of a chelate of cerium(IV) with a .beta.-diketone.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: July 8, 1980
    Assignee: Gulf Research and Development Company
    Inventor: Robert J. Hartle
  • Chelates of cerium (IV), their preparation and gasoline containing said chelates
    Patent number: 4036605
    Abstract: A gasoline motor fuel having improved antiknock characteristics is obtained by incorporating a novel chelate of cerium (IV) in the gasoline. Examples of the novel chelates of cerium (IV) include psCeric 2,4-hexanedionateCeric 3,5-octanedionateCeric 2,2-dimethyl-3,5-heptanedionateCeric 2,6-dimethyl-3,5-heptanedionateCeric 2,2,6,6-tetramethyl-3,5-heptanedionateThe chelates of cerium (IV) are prepared by a novel oxidative ligand exchange reaction between cerous acetylacetonate and a .beta.-diketone.
    Type: Grant
    Filed: June 11, 1973
    Date of Patent: July 19, 1977
    Assignee: Gulf Research & Development Company
    Inventor: Robert J. Hartle
  • Diesters and diacids of phenanthrene
    Patent number: 3953498
    Abstract: Novel 1,8-, 2,7-, 3,6- and 2,5-diesters and diacids of phenanthrene.
    Type: Grant
    Filed: November 13, 1974
    Date of Patent: April 27, 1976
    Assignee: Gulf Research & Development Company
    Inventor: Robert J. Hartle