Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4706101 | Light emitting diode formed of a compound semiconductor material | Masaru Nakamura, Masaki Okajima, Tetsuo Sadamasa, Koichi Nitta | 1987-11-10 |
| 4625223 | Double heterostructure light-emitting semiconductor device | Tetsuo Sadamasa | 1986-11-25 |