Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10619093 | Photoluminescent material | Kouju Sugiyama, Shinji FUJIKI, Minoru MATSUKURA, Shogo Fujiwara, Fumio Kurosaki +2 more | 2020-04-14 |
| 8491141 | Photoluminescent material containing silver ion | Kouju Sugiyama, Wuxian Zhang | 2013-07-23 |