Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4315191 | Luminescent material with alkaline earth metal silicate aluminate host lattice and low-pressure mercury vapor discharge lamp containing the same | Willem L. Konijnendijk, Henricus L. M. Tonnaer | 1982-02-09 |
| 4215289 | Luminescent material, luminescent screen provided with such a material and low-pressure mercury vapor discharge lamp provided with such a screen | Johannes T. W. De Hair | 1980-07-29 |