Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7166240 | Hydrocarbon compounds, materials for organic electroluminescent elements and organic electroluminescent elements | Tsutomu Ishida, Yoshiyuki Totani, Masakatsu Nakatsuka | 2007-01-23 |
| 6929870 | Hydrocarbon compounds, materials for organic electroluminescent elements and organic electroluminescent elements | Tsutomu Ishida, Yoshiyuki Totani, Masakatsu Nakatsuka | 2005-08-16 |