Patents by Inventor Charles Widman

Charles Widman 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).

  • Erasable document marking apparatus
    Publication number: 20050147956
    Abstract: The present invention provides an apparatus and method for erasably marking documents. The invention provides a reusable transparent page that is removably secured to a document. The transparent page may be manufactured in a variety of standard sizes. A marker pen is provided for marking the transparent page that covers the document. The markings are easily erasable, but resistant to accidental erasure, specifically in the course of normal handling.
    Type: Application
    Filed: January 6, 2004
    Publication date: July 7, 2005
    Inventors: Charles Widman, Tamara Nelson