Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6780649 | Photoluminescent semiconductor materials | David W. Armstrong | 2004-08-24 |
| 6630356 | Photoluminescent semiconductor materials | David W. Armstrong | 2003-10-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6780649 | Photoluminescent semiconductor materials | David W. Armstrong | 2004-08-24 |
| 6630356 | Photoluminescent semiconductor materials | David W. Armstrong | 2003-10-07 |