Patents by Inventor Gary William Larson

Gary William Larson 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).

  • Methods and systems for identifying ink
    Patent number: 8669536
    Abstract: An ink composition includes a colorant visible under visible light and a tagging composition, including a carrier and a detectable marker dispersed or dissolved in the carrier. The detectable marker is an isotope of an element, the isotope being present in the ink composition in a concentration ranging from about 1 parts per billion (ppb) to about 1000 ppb.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: March 11, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zeying Ma, Gary William Larson, Lufei Lin