Patents by Inventor Mary Elizabeth Koelzer

Mary Elizabeth Koelzer 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).

  • Electronic target for sensing the impact of objects
    Patent number: 6551205
    Abstract: A target detects the location of an impact of an object against a material by using various sensors. One utilization of the target is for a baseball or softball target whereby strikes and balls are detected depending upon the location of the impact of the ball against the target. The determination of the strikes and the balls is then provided to the thrower of the ball using some type of output device.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: April 22, 2003
    Assignee: Excel Sports, Inc.
    Inventors: Joseph Henry Koelzer, Jr., Mary Elizabeth Koelzer