Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7221047 | Pressure-contact type semiconductor device | Kenji Oota | 2007-05-22 |
| 6995464 | Pressure-contact type semiconductor device | Kenji Oota | 2006-02-07 |
| 6465881 | Compression bonded type semiconductor device | — | 2002-10-15 |
| 6020603 | Semiconductor device with a beveled and chamfered outer peripheral portion | Yasuo Tanaka, Tokumitsu Sakamoto, Nobuhisa Nakasima | 2000-02-01 |
| 5640024 | Compression-type power semiconductor device | Kazuhiro Morishita, Kazuhisa Ide | 1997-06-17 |
| 5574297 | Gate turnoff thyristor with reduced gate trigger current | Nozomu Sennenbara, Kouji Niinobu, Kazuhiko Niwayama | 1996-11-12 |
| 5543363 | Process for adhesively attaching a semiconductor device to an electrode plate | Katsumi Satoh | 1996-08-06 |
| 5428230 | Reverse conducting gate turn-off thyristor | Kazuhiro Morishita | 1995-06-27 |
| 5393995 | Semiconductor thyristor device with recess | Tsutomu Nakagawa, Kouji Niinobu | 1995-02-28 |
| 5371386 | Semiconductor device and method of assembling the same | Katsumi Satoh | 1994-12-06 |
| 5346849 | Method of making a groove structure for isolation between elements comprising a GTO thyristor | — | 1994-09-13 |
| 5281847 | Groove structure for isolating elements comprising a GTO structure | — | 1994-01-25 |
| 5189509 | Semiconductor device and electrode block for the same | Katsumi Satoh | 1993-02-23 |
| 5082800 | Method of forming pattern in manufacturing semiconductor device | Koji Niinobu | 1992-01-21 |
| 5047836 | Temperature compensating contact to avoid misregistration | — | 1991-09-10 |
| 5047824 | Reverse conducting gate turn-off thyristor | Katsumi Sato | 1991-09-10 |
| 4881118 | Semiconductor device | Kazuhiko Niwayama, Tsutomu Nakagawa, Shigekazu Yoshida | 1989-11-14 |
| 4835119 | Semiconductor device and a process of producing same | — | 1989-05-30 |
| 4719500 | Semiconductor device and a process of producing same | — | 1988-01-12 |