Patents by Inventor Karen S. Gladstone

Karen S. Gladstone 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).

  • Input device for dynamic signature verification systems
    Patent number: 5018208
    Abstract: Finger pressure exerted by a writer's fingers on the barrel of a hand-held instrument is employed to dynamically verify a signature.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: May 21, 1991
    Inventor: Karen S. Gladstone