Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6429857 | Apparatus and method to improve resolution of infrared touch systems | Robert W. Knetsch, Henry A. Grice, Jr., John J. Deacon | 2002-08-06 |
| 4943806 | Touch input device having digital ambient light sampling | Paul B. Lucas, James Garrett, John K. Carstedt | 1990-07-24 |
| 4799044 | Phototransistor apparatus with current injection ambient compensation | Wayne J. Wehrer | 1989-01-17 |
| 4713534 | Phototransistor apparatus with current injection ambient compensation | Wayne J. Wehrer | 1987-12-15 |