Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10731235 | Wire for reed switch, reed piece for reed switch, and reed switch | Hajime Ota, Tetsuya Kuwabara, Kazuo Yamazaki, Naoki Sugihara, Norimasa Kawano | 2020-08-04 |
| 6522514 | Photocoupler and connecting system using the same | — | 2003-02-18 |
| 6259308 | Optical coupling semiconductor switching circuit | — | 2001-07-10 |
| 6177689 | Photosensitive device having light transmissive sealing resin with carbonized outer surface | — | 2001-01-23 |
| 6037188 | Method of manufacturing photosensitive semiconductor device | — | 2000-03-14 |
| 5757020 | Photosemiconductor relay, photosemiconductor relay device, controller using photosemiconductor relay, power supply apparatus using photosemiconductor relay and terminal switching apparatus using photosemiconductor relay | Hiroaki Ogawa | 1998-05-26 |
| 5304819 | Light-activated semiconductor device having light-emitting elements, light-receiving elements and output elements | Kenji Mizuuchi, Kazuo Hagimura | 1994-04-19 |