Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9985165 | Optical coupling device | — | 2018-05-29 |
| 9847842 | Optical reception circuit | Hideo Nishikawa, Takeshi Nakasuji | 2017-12-19 |
| RE46486 | Semiconductor pressure sensor | Hideo Nishikawa, Fumihito Kato | 2017-07-25 |
| 9082685 | Optical-coupling semiconductor device | Takeshi Nakasuji, Hideo Nishikawa | 2015-07-14 |
| 8809975 | Semiconductor pressure sensor | Hideo Nishikawa, Fumihito Kato | 2014-08-19 |
| 8729740 | Semiconductor relay | Narutoshi Hoshino, Shinsuke Taka, Sachiko Mugiuda | 2014-05-20 |
| 7382948 | Optical switch | Takanori Sugiyama, Yoshihiro Mihara, Tsutomu Shimomura, Mitsuo Ichiya, Sachiko Mugiuda | 2008-06-03 |