Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4963787 | Luminescent alkaline earth metal orthosilicate, luminescent screen provided with such a silicate and low-pressure mercury vapor discharge lamp provided with such a screen | Bruno M. J. Smets | 1990-10-16 |
| 4926091 | Luminescent terbium-activated borate, luminescent screen provided with such a borate and low-pressure mercury vapor discharge lamp provided with such a screen | ROBERT JACOB PET, Bruno M. J. Smets | 1990-05-15 |
| 4837481 | Cerium and terbium activated luminescent material and mercury vapor discharge lamp containing the same | Judicus M. P. J. Verstegen, Emiel P. J. de Meester, Willebrordus H. M. M. Van de Spijker, Johannes G. Verriet | 1989-06-06 |
| 4827187 | Luminescent barium-hexa-aluminate, luminescent screen provided with such an aluminate and low-pressure mercury vapor discharge lamp provided with such a screen | — | 1989-05-02 |
| 4810930 | Luminescent Eu.sup.3+ -activated silicate, luminescent screen provided with such a silicate and low-pressure mercury vapor discharge lamp provided with such a screen | Bruno M. J. Smets, Joseph Rutten | 1989-03-07 |
| 4716335 | Luminescent screen and low-pressure mercury vapor discharge lamp provided with such a screen | Evert D. Schutten | 1987-12-29 |
| 4716336 | Luminescent screen and low-pressure mercury vapor discharge lamp provided with such a screen | Evert D. Schutten | 1987-12-29 |
| 4441049 | Luminescent material and discharge lamp containing the same | Judicus M. P. J. Verstegen, Emiel P. J. de Meester, Willebrordus H. M. M. Van de Spijker, Johannes G. Verriet | 1984-04-03 |
| 4382207 | Luminescent material and discharge lamp containing the same | Judicus M. P. Jan Verstegen, Emiel P. J. de Meester, Willebrordus H. M. M. Van de Spijker, Johannes G. Verriet | 1983-05-03 |
| 4216408 | Luminescent material and discharge lamp and cathode ray tube containing the same | Judicus M. P. J. Verstegen, Emiel P. J. de Meester, Willebrordus H. M. M. Van de Spijker, Johannes G. Verriet | 1980-08-05 |