Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7339326 | DC/AC converter for supplying two gas discharge lamps | Dolf Henricus Jozef Van Casteren | 2008-03-04 |
| 7329009 | Projection system | Holger Monch, Peter Lurkens, Carsten Deppe, Johannis Antonie Amerens Toonen, Roy Hendrik Zundert | 2008-02-12 |
| 7164241 | Method and apparatus for driving a gas discharge lamp | Wilhelmus Hinderikus Maria Langeslag, Ludovicus Oostvogels, Johannis Antonie Amerens Toonen | 2007-01-16 |
| 7154228 | Ballast for high pressure discharge lamp | Dolf Henricus Jozef Van Casteren | 2006-12-26 |
| 6686703 | High frequency electronic ballast | Robert Erhardt, Oscar Deurloo, Jerzy Janczak, Hendrik Anton Van Esveld, Ronald Hans Van Der Voort | 2004-02-03 |
| 4546285 | Low-pressure mercury vapor discharge lamp | Jean J. Heuvelmans, Franciscus A. S. Ligthart | 1985-10-08 |
| 4277720 | Low-pressure mercury vapor discharge lamp | Albert Bouwknegt, Franciscus A. S. Ligthart, Jean J. Heuvelmans | 1981-07-07 |
| 4237401 | Low-pressure mercury vapor discharge lamp | — | 1980-12-02 |
| 4208604 | Low-pressure mercury vapor discharge lamp | — | 1980-06-17 |