Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7859194 | Short arc lamp driver and applications | Jerry Walker, Arie Ravid, Wei-Chung Su | 2010-12-28 |
| 6465990 | Power factor correction circuit | Beniamin Acatrinei | 2002-10-15 |
| 5949196 | Method and system for switchable light levels in operating gas discharge lamps with an inexpensive single ballast | Bruce A. Pelton | 1999-09-07 |
| 5757630 | Control circuit with improved functionality for non-linear and negative resistance loads | — | 1998-05-26 |
| 5635825 | Power factor corrected feedforward coupled DC power supply | — | 1997-06-03 |
| 5477112 | Ballasting network with integral trap | — | 1995-12-19 |
| 5345164 | Power factor corrected DC power supply | — | 1994-09-06 |
| 5315215 | High-voltage switching circuit | — | 1994-05-24 |
| 5315214 | Dimmable high power factor high-efficiency electronic ballast controller integrated circuit with automatic ambient over-temperature shutdown | — | 1994-05-24 |
| 5175475 | High-pass t-networks with integral transformer for gaseous discharge lamps | John B. Sampson | 1992-12-29 |
| 5101140 | High-pass T-networks with integral transformer for gaseous discharge lamps | John B. Sampson | 1992-03-31 |
| 5047691 | High-pass t-networks with integral transformer for gaseous discharge lamps | John B. Sampson | 1991-09-10 |
| 5028846 | Single-ended ballast circuit | — | 1991-07-02 |
| 5021716 | Forward inverter ballast circuit | — | 1991-06-04 |
| 4672522 | Power factor correcting network | — | 1987-06-09 |
| 4415839 | Electronic ballast for gaseous discharge lamps | — | 1983-11-15 |
| 4256928 | Telephone call diverting and answering system | Barrie Luttge, Austin H. Lesea | 1981-03-17 |