Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5747941 | Electronic ballast that monitors direct current through lamp filaments | Randy G. Russell, Kent E. Crouse, Ronald J. Bezdon | 1998-05-05 |
| 5539281 | Externally dimmable electronic ballast | Randy G. Russell, Kent E. Crouse, Ronald J. Bezdon | 1996-07-23 |
| 5500576 | Low height ballast for fluorescent lamps | Randy G. Russell, Kent E. Crouse, Ronald J. Bezdon | 1996-03-19 |
| 5493180 | Lamp protective, electronic ballast | Ronald J. Bezdon, Randy G. Russell | 1996-02-20 |
| 5493181 | Capacitive lamp out detector | Randy G. Russell, Kent E. Crouse | 1996-02-20 |
| 5461287 | Booster driven inverter ballast employing the output from the inverter to trigger the booster | Randy G. Russell, Kent E. Crouse | 1995-10-24 |
| 5416388 | Electronic ballast with two transistors and two transformers | — | 1995-05-16 |
| 5412287 | Circuit for powering a gas discharge lamp | — | 1995-05-02 |
| 5399944 | Ballast circuit for driving gas discharge | John G. Konopka | 1995-03-21 |
| 5396153 | Protection circuit for electronic ballasts which use charge pump power factor correction | — | 1995-03-07 |
| 5396155 | Self-dimming electronic ballast | Ronald J. Bezdon, Randy G. Russell, Kent E. Crouse | 1995-03-07 |
| 5374875 | High-power factor circuit for energizing gas discharge lamps | John G. Konopka | 1994-12-20 |
| 5373218 | Toggle brightening circuit for powering gas discharge lamps and method for operating gas discharge lamps | John G. Konopka, J. Ray Wood | 1994-12-13 |
| 5363018 | Ballast circuit equipped with ground fault detector | — | 1994-11-08 |
| 5113236 | Integrated circuit device particularly adapted for high voltage applications | Emil Arnold, Steven L. Merchant | 1992-05-12 |
| 4656366 | Control circuitry using two branch circuits for high voltage solid-state switches | James A. Davis, William F. MacPherson, Harry Edward Mussman | 1987-04-07 |
| 4608590 | High voltage dielectrically isolated solid-state switch | Adrian R. Hartman, Terence J. Riley | 1986-08-26 |
| 4602268 | High voltage dielectrically isolated dual gate solid-state switch | Adrian R. Hartman, Alfred U. MacRae | 1986-07-22 |
| 4587545 | High voltage dielectrically isolated remote gate solid-state switch | Joseph Berthold, Adrian R. Hartman, Terence J. Riley | 1986-05-06 |
| 4587656 | High voltage solid-state switch | Adrian R. Hartman, Terence J. Riley | 1986-05-06 |
| 4586073 | High voltage junction solid-state switch | Adrian R. Hartman, Bernard T. Murphy, Terence J. Riley | 1986-04-29 |
| 4528461 | Integrated circuit switch using stacked SCRs | Robert S. Pospisil | 1985-07-09 |
| 4528462 | Integrated circuit switch using stacked SCRs | Robert S. Pospisil | 1985-07-09 |
| 4516037 | Control circuitry for high voltage solid-state switches | — | 1985-05-07 |
| 4480219 | Phase-to-voltage converter | Robert S. Pospisil | 1984-10-30 |