Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7832385 | Ripple reduction in electromagnetic launcher current from pulsed alternators | James P. Kapinski, David Hall, Dennis Pavlik | 2010-11-16 |
| 7219673 | Transformerless multi-level power converter | — | 2007-05-22 |
| 7019421 | Modular linear electric motor with limited stator excitation zone and stator gap compensation | David Hall, Regis J. Hillenbrand | 2006-03-28 |
| 4851949 | Brush bounce detection in active shaft ground system | Robert Osborne, Michael Twerdochlib | 1989-07-25 |