Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7180232 | Low-pressure mercury vapor discharge lamp | Peter Hubertus Franciscus Deurenberg, Theodorus Maria Hendriks | 2007-02-20 |
| 6069454 | Ignition circuit for a discharge lamp | Lambertus Bouwman, Arjan Van Den Berg | 2000-05-30 |
| 5825125 | Neon discharge lamp | Franciscus A. S. Ligthart, Christianus J. Roozekrans, Dick Van Der Voort | 1998-10-20 |
| 4636691 | Arrangement including a metal vapor discharge tube provided with at least two internal electrodes | Jan de Ridder, Leo M. Sprengers, Jozef I. C. Peeters | 1987-01-13 |