Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7982406 | Active lamp current crest factor control | Simon Richard Greenwood | 2011-07-19 |
| 7589480 | High intensity discharge lamp ballast | Simon Richard Greenwood | 2009-09-15 |
| 6791285 | Lamp color control for dimmed high intensity discharge lamps | Simon Richard Greenwood | 2004-09-14 |
| 6495971 | High intensity discharge lamp ballast | Simon Richard Greenwood | 2002-12-17 |
| 6384544 | High intensity discharge lamp ballast | Simon Richard Greenwood | 2002-05-07 |
| 6294900 | Bi-directional AC or DC voltage regulator | Simon Richard Greenwood | 2001-09-25 |
| 6188183 | High intensity discharge lamp ballast | Simon Richard Greenwood | 2001-02-13 |
| 5942884 | Electronic transformer/regulator | Simon Richard Greenwood | 1999-08-24 |