Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7733036 | Method and circuit for driving gas discharge lamps using a single inverter | — | 2010-06-08 |
| 7652437 | Fluorescent tube lamp drive circuit | Geert Willem Van Der Veen | 2010-01-26 |
| 7590457 | Method for bonding a lighting device to a lighting system while using wireless communication | Marcel Beij | 2009-09-15 |
| 7176636 | Circuit arrangement for operating a lamp | Marcel Beij | 2007-02-13 |
| 7141938 | Power control device, apparatus and method of controlling the power supplied to a discharge lamp | Marcel Beij | 2006-11-28 |
| 6861811 | Half bridge with constant amplitude drive signal | — | 2005-03-01 |
| 6836082 | Ballast and method of feeding a fluorescent lamp | Marcel Beij | 2004-12-28 |
| 6727663 | Circuit arrangement for feeding a load | Antonius Henricus Peterus Johannes Habraken, Geert Willem Van Der Veen, Everaard Marie Jozef Aendekerk | 2004-04-27 |
| 6664743 | Low loss operating circuit for a discharge lamp | Wilhelmus Hinderikus Maria Langeslag, Machiel Antonius Martinus Hendrix, Antonius Henricus Peterus Johannes Habraken | 2003-12-16 |
| 6628092 | Ballast and method of feeding a fluorescent lamp | Marcel Beij | 2003-09-30 |
| 6624598 | Ballast and method of feeding a fluorescent lamp | Marcel Beij | 2003-09-23 |
| 6545433 | Circuit arrangement equipped with a timer compensating lamp degradation through its service life | Marcel Beij | 2003-04-08 |
| 6538393 | Circuit arrangement | Marcel Beij | 2003-03-25 |
| 6535401 | Circuit arrangement | Marcel Beij, Everaard Marie Jozef Aendekerk, Wilhelmus Hinderikus Maria Langeslag | 2003-03-18 |
| 6445140 | Circuit device | Marcel Beij, Machiel Antonius Martinus Hendrix, Wilhelmus Hinderikus Maria Langeslag | 2002-09-03 |
| 6384543 | Switching device | Adrianus M. J. De Bijl | 2002-05-07 |
| 6307329 | Circuit arrangement | Marcel Beij | 2001-10-23 |
| 6078147 | Discharge lamp ballast circuit with duty cycle dimming control | Paulus P. B. Arts, Etienne Nicolaas Kathalijntje Paulus Marie Eberson | 2000-06-20 |
| 6069453 | Ballast circuit for reducing striations in a discharge lamp | Paulus P. B. Arts, Marcel Beij | 2000-05-30 |
| 5982108 | DC/AC converter for a discharge lamp having a DC offset at the switching element to reduce power loss | Ronny A. A. M. Jacobs | 1999-11-09 |
| 5962985 | DC/AC converter with improved starter circuit | Hendricus F. P. Michiels | 1999-10-05 |
| 5892327 | Circuit arrangement for operating a discharge lamp | Johannes Hendrik Wessels, Ronny A. A. M. Jacobs | 1999-04-06 |
| 5841240 | Efficient discharge lamp electrode heating circuit operable over wide temperature and power range | Marcel Beij, Hendrikus J. W. Schenkelaars | 1998-11-24 |
| 5689675 | Ranking-based address assignment in a modular system | Marcel Beij | 1997-11-18 |
| 5528117 | Electronic lamp ballast with driving frequency between load resonant frequencies | Paul R. Veldman, Pieter Van Zanten | 1996-06-18 |