Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9837615 | Nitrogen-containing heterocyclic derivative, organic electroluminescence element material using same, and organic electroluminescence element and electronic device using same | Masahiro Kawamura, Hirokatsu Ito, Tomoharu HAYAMA, Tasuku HAKETA | 2017-12-05 |
| 9818953 | Aromatic amine derivative, material for organic electroluminescent element, and organic electroluminescent element | Hirokatsu Ito | 2017-11-14 |
| 9741938 | Aromatic amine derivative, and organic electroluminescent element comprising the same | Masakazu Funahashi, Masahiro Kawamura | 2017-08-22 |
| 9640773 | Aromatic amine derivative and organic electroluminescence element using same | Hirokatsu Ito | 2017-05-02 |