Patents by Inventor Ann E. Wykoff

Ann E. Wykoff 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).

  • Carbon black coupler
    Patent number: 6794428
    Abstract: A coupler is described for use in carbon black filled rubber compositions. The coupler includes an amine group and a thiol group or a polysulfidic linkage. The coupler improves the interaction of the carbon black with the rubber as measured by a decrease in the tan delta at 60° C. while substantially maintaining the tan delta at 0° C.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: September 21, 2004
    Assignee: The Lubrizol Corporation
    Inventors: James D. Burrington, Benny R. Richardson, Joseph W. Pialet, Ann E. Wykoff, Roger L. Sowerby, Kenneth W. Lee, Ralph E. Kornbrekke, Ghebrehiwet N. Ghebremeskel, Kirk E. Davis
  • Carbon black coupler
    Publication number: 20030212189
    Abstract: A coupler is described for use in carbon black filled rubber compositions. The coupler includes an amine group and a thiol group or a polysulfidic linkage. The coupler improves the interaction of the carbon black with the rubber as measured by a decrease in the tan delta at 60° C. while substantially maintaining the tan delta at 0° C.
    Type: Application
    Filed: October 29, 2002
    Publication date: November 13, 2003
    Inventors: James D Burrington, Benny R Richardson, Joseph W Pialet, Ann E Wykoff, Roger L Sowerby, Kenneth W Lee, Ralph E Kornbrekke, Gheberhiwet N Ghebremeskel, Kirk E Davis