Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11149196 | Pyrromethene-boron complex, color-changing composition, color-changing film, light source unit including same, display, and lighting | Yasunori Ichihashi, Masaaki Umehara, Daisaku Tanaka | 2021-10-19 |
| 10894375 | Color conversion film and light source unit including the same, display, and lighting apparatus | Daisaku Tanaka, Masaaki Umehara, Yoshikazu Sato | 2021-01-19 |