Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6262947 | Timepiece with a changeable dial face | — | 2001-07-17 |
| 6199163 | Hard disk password lock | Patrick A. Dumas | 2001-03-06 |
| 5911537 | Parabolic cover for manhole | — | 1999-06-15 |
| 5844532 | Color display system | Kia Silverbrook, William C. Naylor, Michael John Webb, David R. Brown, Natalie L. Kershaw +1 more | 1998-12-01 |
| 5561476 | Motion detection method and apparatus | Natalie L. Kershaw, William C. Naylor, David R. Brown | 1996-10-01 |
| 5481319 | Motion detection method and apparatus | Natalie L. Kershaw, William C. Naylor, David R. Brown | 1996-01-02 |