Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7841989 | Electromagnetic personnel interdiction control method and system | Karl F. Kiefer, Kevin Champaigne | 2010-11-30 |
| 6810750 | Encoded surface acoustic wave based strain sensor | Karl F. Kiefer, Kevin Champaigne, Eric M. Krug | 2004-11-02 |