Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5003231 | Adaptive resonant ballast for discharge lamps | — | 1991-03-26 |
| 4609852 | Lamp ballast with near unity power factor and low harmonic content | — | 1986-09-02 |
| 4538094 | Lamp ballast with near unity power factor and low harmonic content | — | 1985-08-27 |
| 4416552 | Correlation thermography | Robert A. Hessemer, Jr. | 1983-11-22 |
| 4330736 | Compensated current feedback oscillator ballast for fluorescent lamps and the like | — | 1982-05-18 |