Patents by Inventor David L. Strait

David L. Strait 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).

  • Zinc and phosphorus containing transmission fluids having enhanced performance capabilities
    Patent number: 6482778
    Abstract: Transmission fluid compositions comprising a zinc detergent and at least one phosphorus-containing additive have enhanced performance capabilities. The use of the zinc detergent and the phosphorus-containing additive provide transmission fluids that exhibit high steel-on-steel coefficients of friction, particularly useful in continuously variable transmissions (CVT).
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: November 19, 2002
    Assignee: Ethyl Corporation
    Inventors: Samuel H. Tersigni, Sanjay Srinivasan, David L. Strait
  • ZINC AND PHOSPHORUS CONTAINING TRANSMISSION FLUIDS HAVING ENHANCED PERFORMANCE CAPABILITIES
    Publication number: 20020032129
    Abstract: Transmission fluid compositions comprising a zinc detergent and at least one phosphorus-containing additive have enhanced performance capabilities. The use of the zinc detergent and the phosphorus-containing additive provide transmission fluids that exhibit high steel-on-steel coefficients of friction, particularly useful in continuously variable transmissions (CVT).
    Type: Application
    Filed: August 11, 1999
    Publication date: March 14, 2002
    Inventors: SAMUEL H. TERSIGNI, SANJAY SRINIVASAN, DAVID L. STRAIT