Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10703970 | Color conversion composition, color conversion film and light emitting device including the same, liquid crystal display device, and illumination device | Masaaki Umehara, Hyo-Seok Kim | 2020-07-07 |
| 10199589 | Photoelectric conversion element and image sensor using same | Masaaki Umehara, Tsuyoshi Tominaga | 2019-02-05 |
| 9842884 | Photoelectric conversion element and image sensor | Masaaki Umehara, Tsuyoshi Tominaga | 2017-12-12 |
| 9391288 | Light emitting device material and light emitting device | Kazumasa Nagao, Tsuyoshi Tominaga | 2016-07-12 |