Patents by Inventor Eugene K. Stephenson

Eugene K. Stephenson 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).

  • Polymeric acetoacetanilide azo colorants
    Patent number: 6667392
    Abstract: This invention relates to colorants comprising a chromophore having a single azo acetoacetanilide moiety, wherein said moiety each have at least one poly(oxyalkylene) chain. Such colorants exhibit extremely good base stability and lightfastness, particularly when incoporated within certain media and/or on the surface of certain substrates. These poly(oxyalkylene) chains provide solubility in different solvents or resins thereby permitting the introduction of such excellent coloring chromophores within diverse media and/or or diverse substrates. Compositions and articles comprising such colorants are provided as are methods for producing such inventive colorants.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: December 23, 2003
    Assignee: Milliken & Company
    Inventors: Jusong Xia, Eric B. Stephens, Mary G. Mason, John W. Miley, Leonard J. Starks, Eugene K. Stephenson
  • Polymeric acetoacetanilide azo colorants
    Publication number: 20020177640
    Abstract: This invention relates to colorants comprising a chromophore having a single azo acetoacetanilide moiety, wherein said moiety each have at least one poly(oxyalkylene) chain. Such colorants exhibit extremely good base stability and lightfastness, particularly when incoporated within certain media and/or on the surface of certain substrates. These poly(oxyalkylene) chains provide solubility in different solvents or resins thereby permitting the introduction of such excellent coloring chromophores within diverse media and/or or diverse substrates. Compositions and articles comprising such colorants are provided as are methods for producing such inventive colorants.
    Type: Application
    Filed: November 21, 2001
    Publication date: November 28, 2002
    Inventors: Jusong Xia, Eric B. Stephens, Mary G. Mason, John W. Miley, Leonard J. Starks, Eugene K. Stephenson