Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9761811 | Organic electroluminescence element and material for organic electroluminescence element | — | 2017-09-12 |
| 9214637 | Chalcogen-containing aromatic compound, organic semiconductor material, and organic electronic device | Takahiro Kai, Megumi Matsumoto | 2015-12-15 |
| 8906521 | Organic electroluminescent device having triptycene derivative material | Takahiro Kai, Toshihiro Yamamoto | 2014-12-09 |
| 8722208 | Organic electroluminescent device | Takahiro Kai, Hideki Tanaka, Toshihiro Yamamoto, Megumi Matsumoto | 2014-05-13 |
| 5360775 | Porous clay intercalation compound and its production method | Kunio Ohtsuka | 1994-11-01 |
| 5064791 | Method of preparing ceramic composite powders and the powders obtained thereby | Kunio Ohtsuka, Johji Koga | 1991-11-12 |