Patents Assigned to Write Stuff Enterprises, Inc.
  • System for confirming hit locations on tennis court boundaries
    Patent number: 7632197
    Abstract: The present invention is an article and process for determining the site of impact of a movable object on a treated surface, where a tennis ball is treated with a striking composition, and a boundary line region is treated with a receiving composition such that when the striking composition and the receiving composition are in physical contact, a calorimetric indicator is left on the receiving composition to indicate the point of contact.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: December 15, 2009
    Assignee: Write Stuff Enterprises, Inc.
    Inventors: Jeffrey Rodengen, Roger Tyzzer, Ray L. Hauser