Issued Patents 2023
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11807656 | Polycyclic aromatic compound and light emission layer-forming composition | Takuji Hatakeyama, Yasuhiro Kondo, Keiichi Nakamoto | 2023-11-07 |
| 11653565 | Polycyclic aromatic compound | Takuji Hatakeyama, Soichiro NAKATSUKA, Hajime Gotoh, Yasuyuki Sasada, Toshiaki IKUTA | 2023-05-16 |
| 11647666 | Organic electroluminescent element | Takuji Hatakeyama, Katsuya Masuda, Yuko Yamaga | 2023-05-09 |
| 11637249 | Organic electroluminescent element | Takuji Hatakeyama, Katsuya Masuda | 2023-04-25 |
| 11637250 | Polycyclic aromatic compound and light emitting layer-forming composition | Takuji Hatakeyama, Yasuhiro Kondo, Keiichi Nakamoto | 2023-04-25 |