Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D444132 | Semiconductor element | Masaaki Iwanishi, Toshihisa Inoue, Kazuhiko Kurahashi, Kenji Suzuki | 2001-06-26 |
| 5345094 | Light triggered triac device and method of driving the same | Yasunori Usui | 1994-09-06 |
| 5138415 | Photo-semiconductor device with a zero-cross function | — | 1992-08-11 |