Patents by Inventor Jimmy L. Stevens

Jimmy L. Stevens 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).

  • Asphalt compositions with improved cross-linking agent
    Patent number: 5496400
    Abstract: An improved, substantially anhydrous, cross-linking agent is disclosed for use in asphalt compositions of the type used for roofing and paving materials. The cross-linking agent comprises a blend of tall oil, a strong base, an anhydrous organic solvent, and fatty amines and is substantially free of water.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: March 5, 1996
    Assignee: Vinzoyl Petroleum Co.
    Inventors: Michael P. Doyle, Jimmy L. Stevens
  • Asphalt compositions with improved cross-linking agent
    Patent number: 5476542
    Abstract: An improved, substantially anhydrous, cross-linking agent is disclosed for use in asphalt compositions of the type used for roofing and paving materials. The cross-linking agent comprises a blend of tall oil, a strong base, an anhydrous organic solvent such as n-methyl fatty acid taurate, and fatty amines and is substantially free of water.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: December 19, 1995
    Inventors: Michael P. Doyle, Jimmy L. Stevens
  • Asphalt compositions with improved cross-linking agent
    Patent number: 5437717
    Abstract: An improved, substantially anhydrous, cross-linking agent is disclosed for use in asphalt compositions of the type used for roofing and paving materials. The cross-linking agent comprises a blend of tall oil, a strong base, n-methyl fatty acid taurate, and fatty amines and is substantially free of water.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: August 1, 1995
    Assignee: Vinzoyl Petroleum Co.
    Inventors: Michael P. Doyle, Jimmy L. Stevens