Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6111359 | Integrated HID reflector lamp with HID arc tube in a pressed glass reflector retained in a shell housing a ballast | Dale E. Work, Mark W. Fellows, Gregory J. Nelson, Kent Collins, Robertus A. J. Keyser +6 more | 2000-08-29 |
| 5998939 | High frequency HID lamp system | Mark W. Fellows, Gregory J. Nelson, Robertus A. J. Keyser, Dale E. Work, Josephus C. M. Hendricx +3 more | 1999-12-07 |
| 5923127 | High-pressure discharge lamp with miniature discharge vessel and integrated circuitry | Robertus A. J. Keijser, Oscar Deurloo, Arthur Kimmels, Willem J. Van Den Hoek | 1999-07-13 |
| 5828185 | High frequency HID lamp system with lamp driven at a frequency above the audible and below the lowest lamp resonant frequency | Mark W. Fellows, Gregory J. Nelson, Robertus A. J. Keyser, Dale E. Work, Josephus C. M. Hendricx +3 more | 1998-10-27 |