Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8411053 | Dual pen interactive whiteboard system | Mark E. Plasterer, David Eric Timmons, Richard Wiley Prugh | 2013-04-02 |
| 6930673 | Collaborative input system | Stephen T. Kaye, David Eric Timmons, Brad Eckert, Wesley Jacobs | 2005-08-16 |
| 5821916 | Digitizer cursor velocity offset error correction system | James S. Watson | 1998-10-13 |
| 5326940 | Dynamically-adjustable scanning rate in digitizers | Waldo L. Landmeier | 1994-07-05 |
| 5134253 | Digitizer employing loopback conductor pattern using rotation sequencing | — | 1992-07-28 |
| 4939318 | Digitizer pen tilt correction employing wires near the data point | James S. Watson | 1990-07-03 |