Patents by Inventor Carl E. Shanholtz

Carl E. Shanholtz 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).

  • Multifunctional ashless detergent additives for fuels and lubricants
    Patent number: 5264004
    Abstract: An ashless detergent additive having antioxidant and metal surface protection properties for lubricants or fuels is made from a Mannich condensation reaction between a hydrocarbylbissuccinimide, such as a dimer of a polyisobutenylsuccinimide (derived from tetraethylenepentamine), an aldehyde, such as formaldehyde, and a heteroatom substituted benzoic acid such as salicylic acid, thiosalicylic acid or aminosalicylic acid.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: November 23, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Angeline B. Cardis, Arjun K. Goyal, Carl E. Shanholtz, Virginia C. Wiszniewski
  • Fuel compositions containing reaction products of aromatic triazoles and fatty acids salt as antiwear additives
    Patent number: 5183475
    Abstract: A fuel composition contains an antiwear additive comprising the reaction product of a fatty acid salt comprising oleic acid, stearic acid, tall oil acid and dimer acid having 10 to 40 carbon atoms and an aromatic triazole such as tolyltriazole and method of making the same.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: February 2, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Angeline B. Cardis, Carl E. Shanholtz
  • Olefin/maleic anhydride copolymer heterocyclic-azoles as antiwear additives, and fuel compositions
    Patent number: 5160349
    Abstract: A fuel composition contains an antiwear additive comprising the reaction product of heterocyclic compound having antiwear activity such as a triazole e.g. benzotriazole, tolyltriazole, and a copolymer with succinic anhydride moiety, such as an olefin/maleic anhydride copolymer.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: November 3, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Angeline B. Cardis, Carl E. Shanholtz
  • Multifunctional ashless detergent additives for fuels and lubricants
    Patent number: 5160649
    Abstract: An ashless detergent additive having antioxidant and metal surface protection properties for lubricants or fuels is made from a Mannich condensation reaction between a hydrocarbylbissuccinimide, such as a dimer of a polyisobutenylsuccinimide (derived from tetraethylenepentamine), an aldehyde, such as formaldehyde, and a heteroatom substituted benzoic acid such as salicyclic acid, thiosalicyclic acid or aminosalicylic acid.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: November 3, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Angeline B. Cardis, Arjun K. Goyal, Carl E. Shanholtz, Virginia C. Wiszniewski
  • Polymer supported 1-alkyl-N,N-dialkyl aminoalcohols and fuel compositions containing same
    Patent number: 5080690
    Abstract: Products of reaction between 1-alkyl-N,N-dialkyl ethanolamines and copolymers of maleic anhydride are new additives which are effective in lowering the cloud point of distillate fuels.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: January 14, 1992
    Assignee: Mobil Oil Corp.
    Inventors: David J. Baillargeon, Angeline B. Cardis, Susan W. Johnson, Carl E. Shanholtz