Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 8493326 | Controller with removably attachable text input device | James R. Stewart, William P. Stiles, Richard S. Lum, Robert Walker | 2013-07-23 | $26,254,000 |
| 7762892 | Mode-altering key for a character input device | Richard S. Lum, William Guo | 2010-07-27 | $22,577,000 |
| 7283125 | Text input device and adapter mechanism | William P. Stiles, Richard S. Lum, Robert Walker | 2007-10-16 | $16,447,000 |
| 7116311 | Embedded text input | Richard S. Lum, William Guo | 2006-10-03 | $40,851,000 |
| D483770 | Keyboard key configuration | Richard S. Lum | 2003-12-16 |