Issued Patents All Time
Showing 1–3 of 3 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 | Johannus G. Verlijsdonk | 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 | Johannus G. Verlijsdonk, ROBERT JACOB PET | 1990-05-15 |
| 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 | Johannus G. Verlijsdonk, Joseph Rutten | 1989-03-07 |