Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7635438 | Luminescent material | Masaaki Tamatani, Ryosuke Hiramatsu, Kazuaki Ootsuka, Yasushi Hattori, Naomi Shida | 2009-12-22 |
| 7414272 | Fluorescent substance containing nitrogen, method for manufacturing the same, and light-emitting device | Ryosuke Hiramatsu, Kazuaki Ootsuka, Naomi Shida, Masaaki Tamatani, Yoshihito Tsutsui | 2008-08-19 |