Patents by Inventor Richard J. Selah

Richard J. Selah 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).

  • Document Authentication Using Security Ink and Chemical Reactant
    Publication number: 20100059984
    Abstract: A method and system of document authentication comprise applying a neutralizer security ink to a paper document to be authenticated, the neutralizer security ink neutralizing a reactant in the paper document. A color changing security ink is applied to the paper document to be authenticated at least to an area where the neutralizer security ink was applied, the color changing security ink having a first security color and a second security color. A test solution is applied to the paper document to be authenticated at least on the area where the neutralizer security ink and color changing security ink have both been applied. The application of the test solution to the area where the neutralizer security ink and color changing security ink have both been applied causes the color changing security ink to change from the first security color to the second security color.
    Type: Application
    Filed: September 8, 2008
    Publication date: March 11, 2010
    Applicant: NOCOPI TECHNOLOGIES, INC.
    Inventors: JoAnn Domanski, Richard J. Selah