Patents by Inventor Barbara C. Jackson

Barbara C. Jackson 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).

  • Polymers containing optical brightener compounds copolymerized therein and methods of making and using therefor
    Patent number: 6150494
    Abstract: The invention relates to a polymer prepared from the repeat units of residues of a monomer of at least one dicarboxylic acid or ester; a monomer comprising a diol, diamine or a mixture thereof; a monomer comprising at least one sulfonate group and at least one polyester reactive group, and a monomer comprising an optical brightener agent having at least one polyester reactive group. The invention further relates to a method for preparing a polymer. The invention further relates to method of marking an article or composition with the polymer. The invention further relates to a method for detecting and separating an article contacted with the polymer. The invention further relates to an article or composition contacted with the polymer. The invention further relates to a method for enhancing the optical brightness of an article or composition, by contacting the article or composition with the polymer.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: November 21, 2000
    Assignee: Eastman Chemical Company
    Inventors: Richard Hsu-Shien Wang, James J. Krutak, Mahendra K. Sharma, Barbara C. Jackson
  • Methods for marking digital compact discs as a means to determine its authenticity
    Patent number: 6099930
    Abstract: A digital recording medium, such as a compact disc, having a substrate, a reflective layer and a protective layer includes a near infrared fluorophore in one of the layers. The near infrared fluorophore can be incorporated into the CD by coating, admixing, blending or copolymerization and in an amount to impart a detectable fluorescence from the fluorophore when exposed to electromagnetic radiation having a wavelength ranging from about 670 nanometers (nm) to about 1100 nm. A method of marking a CD with an invisible marking and an apparatus for detecting the fluorophore is further provided.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: August 8, 2000
    Assignee: Isotag Technology, Inc.
    Inventors: Michael John Cyr, Horst Clauberg, Tony Wayne Helton, Gregory W. Nelson, Randy B. Meade, James E. Moore, G. Russell Owens, Barbara C. Jackson, James John Krutak, Sr.