Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12281248 | Organic light-emitting element using polycyclic aromatic derivative compound | Sung-Hoon JOO, Byung-sun YANG, Su Jin Kim, Ji Hwan Kim, Hyeon-jun JO +6 more | 2025-04-22 |
| 12219872 | Organic electroluminescent element | Yuta HIRAYAMA, Takeshi Yamamoto, Shuichi Hayashi, Se-Jin Lee, Oun-Gyu Lee +1 more | 2025-02-04 |
| 11997870 | Organic electroluminescent element and method for producing same | Kouki KASE, Takeshi Yamamoto, Kazuyuki SURUGA, Shuichi Hayashi | 2024-05-28 |
| 11980092 | Organic electroluminescence element | Yuta HIRAYAMA, Takeshi Yamamoto, Shuichi Hayashi, Young Hwan Park | 2024-05-07 |
| 11974499 | Organic EL device, amine compound having benzazole ring structure, and method in which said amine compound is used in capping layer of organic EL device | Kouki KASE, Takeshi Yamamoto, Shuichi Hayashi | 2024-04-30 |
| 11968882 | High-molecular-weight compound including substituted triarylamine structural unit, and organic electroluminescent device | Kazunori Togashi, Mika SHINODA, Hideyoshi Kitahara, Hiroki HIRAI, Yuta SAEGUSA | 2024-04-23 |
| 11925107 | Organic electroluminescent device | Kazuyuki SURUGA, Shuichi Hayashi, Takeshi Yamamoto, Kouki KASE | 2024-03-05 |
| 11706943 | Organic electroluminescent element and method for producing same | Kouki KASE, Takeshi Yamamoto, Kazuyuki SURUGA, Shuichi Hayashi | 2023-07-18 |
| 11672169 | Organic electroluminescent element | Takeshi Yamamoto, Naoaki Kabasawa | 2023-06-06 |
| 11578065 | Organic electroluminescence device | Kazuyuki SURUGA, Takeshi Yamamoto, Kouki KASE | 2023-02-14 |
| 11437583 | Organic electroluminescence device that includes compound having benzoazole structure | Kouki KASE, Naoaki Kabasawa, Kazuyuki SURUGA | 2022-09-06 |
| 11158813 | Organic electroluminescent device | Naoaki Kabasawa, Shuichi Hayashi, Kazuyuki SURUGA | 2021-10-26 |
| 11158811 | Organic electroluminescent device | Shuichi Hayashi, Naoaki Kabasawa, Daizou Kanda, Soon-Wook Cha, Sang Woo Park +2 more | 2021-10-26 |
| 10593884 | Organic electroluminescent device | Norimasa Yokoyama, Shuichi Hayashi, Takeshi Yamamoto, Naoaki Kabasawa, Daizou Kanda +1 more | 2020-03-17 |
| 10497876 | Organic electroluminescent device | Norimasa Yokoyama, Shuichi Hayashi, Takeshi Yamamoto, Naoaki Kabasawa, Daizou Kanda +4 more | 2019-12-03 |
| 10326079 | Organic electroluminescent device | Shuichi Hayashi, Takeshi Yamamoto, Naoaki Kabasawa | 2019-06-18 |
| 8422871 | Immersion heater | — | 2013-04-16 |
| 6887424 | Inline degassing apparatus | Yoshikazu Ohno | 2005-05-03 |
| 6290900 | Molten metal vessel for filtering impurities | Tomoyuki Hatano, Takeshi Nagasaka, Hiromi Takagi, Sumi Yoshikawa | 2001-09-18 |
| 5567378 | Molten metal holding furnace and method of holding molten metal within the same | Hiromi Takagi, Masahiko Hoshino, Sumi Yoshikawa | 1996-10-22 |