Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5276381 | Organic electroluminescent device | Takeo Wakimoto, Ryuji Murayama, Hitoshi Nakada, Masaharu Nomura | 1994-01-04 |
| 5227252 | Electroluminescent device | Ryuji Murayama, Takeo Wakimoto, Hitoshi Nakada, Masaharu Nomura | 1993-07-13 |
| 4514559 | Water soluble disazo compound, copper salt thereof, and sheet or film colored therewith | Tadashi Matuo, Tooru Tabei | 1985-04-30 |