Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4727341 | Optical modulator | Kenichi Nishi | 1988-02-23 |
| 4669086 | Frequency-stabilized semiconductor laser oscillator | Kazuhisa Kaede | 1987-05-26 |
| 4636821 | Surface-emitting semiconductor elements | Tomoo Yanase | 1987-01-13 |