Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6625270 | Method, apparatus, and system for filtering incoming telephone calls | Thomas Banwell, Ariel Dori, Thomas J. Robe | 2003-09-23 |
| 6157164 | Battery power system | Robert K. Jaworski, Robert J. Kakalec, Thomas H. Kimsey, Thomas O'Sullivan | 2000-12-05 |
| 4935688 | Electrical storage cell life extender | Thomas O'Sullivan | 1990-06-19 |
| 4733104 | Integrated circuit for controlling power converter by frequency modulation and pulse width modulation | Robert Louis Steigerwald | 1988-03-22 |
| 4695934 | Multiple output resonant power supply | Robert Louis Steigerwald | 1987-09-22 |
| 4685040 | Integrated circuit for controlling power converter by frequency modulation and pulse width modulation | Robert Louis Steigerwald | 1987-08-04 |