Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5182503 | Low pressure mercury discharge lamp circuit arrangement | Leonardus U. E. Konings | 1993-01-26 |
| 5166580 | Low pressure mercury discharge lamp circuit arrangement | Leonardus U. E. Konings | 1992-11-24 |
| 5164638 | Low pressure mercury discharge lamp circuit arrangement | Leonardus U. E. Konings | 1992-11-17 |
| 4868463 | Method of operating a high-pressure discharge lamp | Jan Willem Frederik Dorleijn, Rudolf L. A. van der Heijden | 1989-09-19 |
| 4568859 | Discharge lamp with interference shielding | Henk Houkes, Pieter Postma | 1986-02-04 |
| 4422017 | Electrodeless gas discharge lamp | Hendrik B. B. van Dam, Petrus F. J. A. Wouters | 1983-12-20 |