Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686022 | Phosphorescent phosphor | Yoshihiko Murayama, Nobuyoshi Takeuchi, Takashi Matsuzawa | 1997-11-11 |
| 5424006 | Phosphorescent phosphor | Yoshihiko Murayama, Nobuyoshi Takeuchi, Takashi Matsuzawa | 1995-06-13 |