Patents by Inventor Paul D. Kowalewski

Paul D. Kowalewski 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).

  • Digitizing stylus having capacitive pressure and contact sensing capabilities
    Patent number: 5438275
    Abstract: A stylus assembly in which a stylus is mounted in a housing for movement relative thereto. An electrical circuit is provided for sensing contact of the stylus with a writing surface and measuring the pressure exerted on the surface by the stylus.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: August 1, 1995
    Assignee: International Business Machines Corporation
    Inventors: Francis Fado, Tin-Lup Wong, Guy F. Verrier, Robert L. Donaldson, Paul D. Kowalewski