Patents by Inventor Tammy E. Link

Tammy E. Link 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).

  • Laser-marking additive
    Patent number: 7169471
    Abstract: The present invention relates to a laser marking additive, a precursor and method of laser-marking. The method can include exposing a substrate including a high luster bismuth oxychloride to a laser creating a laser-mark, with the proviso that the substrate is not an unsaturated polyester cross-linked with a styrene monomer.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: January 30, 2007
    Assignee: EMD Chemicals, Inc.
    Inventors: Shane F. Dreher, Mark J. Tellefsen, Tammy E. Link