Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4559469 | Green emitting phosphor and cathode-ray tube provided with such a phosphor | Thomas Welker, Wolfram Czarnojan | 1985-12-17 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4559469 | Green emitting phosphor and cathode-ray tube provided with such a phosphor | Thomas Welker, Wolfram Czarnojan | 1985-12-17 |