Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5459338 | Gate turn-off thyristor and power convertor using the same | Yuji Takayanagi, Susumu Murakami, Satoshi Matsuyoshi, Yasuhiro Mochizuki, Hidekatsu Onose | 1995-10-17 |
| 5430311 | Constant-voltage diode for over-voltage protection | Susumu Murakami, Hiroshi Narita | 1995-07-04 |
| 5324967 | Turn off type semiconductor device, method of producing the same and the power conversion apparatus employing the same | Hideo Honma, Susumu Murakami, Tsutomu Yatsuo, Isamu Sanpei, Kenji Yagishita | 1994-06-28 |
| 5021855 | Gate turn-off thyristor | Saburo Oikawa, Tsutomu Yatsuo | 1991-06-04 |
| 4825270 | Gate turn-off thyristor | Tsutomu Yatsuo, Saburo Oikawa, Isamu Sanpei | 1989-04-25 |