Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6469434 | Zinc silicate luminescent materials and related luminescent screen products | Helmut Bechtel, Thomas Justel, Hans Nikol, Cornelis Reinder Ronda | 2002-10-22 |
| 6426589 | Luminescent material coated with a protective layer | Thomas Justel, Hans Nikol, Cornelis Reinder Ronda | 2002-07-30 |