Patents by Inventor Thomas R. Potrawa

Thomas R. Potrawa 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).

  • USE OF HUMIDITY STABLE YELLOW FLUORESCENT PIGMENTS IN SECURITY APPLICATIONS
    Publication number: 20120094038
    Abstract: Yellow and yellow-green fluorescent compounds are provided herein that can be incorporated into carriers (e.g., inks) and applied (e.g., printed) as security features on substrates (e.g., documents). The compounds can be selected based upon their resistance to humidity, and preferably exhibit a high initial fluorescence intensity, and a relatively high fluorescence intensity as well as a low relative intensity loss after prolonged humidity exposure.
    Type: Application
    Filed: September 27, 2011
    Publication date: April 19, 2012
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Thomas R. Potrawa, Michael Kessler