Patents by Inventor Rufus H. Ritchie

Rufus H. Ritchie 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).

  • Touch screen with relatively conductive grid
    Patent number: 7800589
    Abstract: A new touch screen design provides for corrections of non-uniformities, more accurate touch point measurement, and multiple simultaneous touch point measurements through the use of a grid of relatively conductive lines.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: September 21, 2010
    Assignee: Tyco Electronics Corporation
    Inventors: G. Samuel Hurst, Rufus H. Ritchie, Donald W. Bouldin, Robert J. Warmack
  • Touch screen with relatively conductive grid
    Publication number: 20040135775
    Abstract: A new touch screen design provides for corrections of non-uniformities, more accurate touch point measurement, and multiple simultaneous touch point measurements through the use of a grid of relatively conductive lines.
    Type: Application
    Filed: December 10, 2002
    Publication date: July 15, 2004
    Inventors: G Samuel Hurst, Rufus H Ritchie, Donald W Bouldin, Robert J Warmack