Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9002146 | Optical gate switch | Ryouichi Akimoto, Shinichirou Gozu, Hiroshi Ishikawa | 2015-04-07 |
| 5144603 | Optical head incorporating refractive index distribution changeable lens | Isao Ohbu | 1992-09-01 |
| 4587040 | Thick film thermistor composition | Hiromi Tosaki, Hideo Arima, Akira Ikegami | 1986-05-06 |
| 4347166 | Thermistor composition | Hiromi Tosaki, Hideo Arima, Akira Ikegami, Tokio Isogai, Ichiro Tsubokawa | 1982-08-31 |