Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11063223 | Organic electron transport material and organic electroluminescent element using same | Masataka Watanabe, Masanobu Kotsubo, Tomoko Fukushima, Izumi Maki | 2021-07-13 |
| 11031561 | Organic electron transport material and organic electroluminescent element using same | Tsuyoshi Hayashida, Masataka Watanabe, Masanobu Kotsubo, Izumi Maki | 2021-06-08 |
| 9406910 | Organic electroluminescent element and manufacturing method thereof, and phosphorus-containing organic compound and manufacturing method thereof | Yasuyuki Goto, Tsuyoshi Hayashida, Masanao Era | 2016-08-02 |
| 9136475 | Organic EL element and method for producing same | Kenji Okumoto, Gosuke Sakamoto, Masaomi Shibata, Izumi Kakinoki, Masataka Watanabe +2 more | 2015-09-15 |
| 7303825 | Electroluminescence device | Yasuyuki Goto | 2007-12-04 |