Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5489788 | Insulated gate semiconductor device with improved short-circuit tolerance | Yoshifumi Tomomatsu, Hiroshi Yamaguchi | 1996-02-06 |
| 5451531 | Method of fabricating an insulated gate semiconductor device | Hiroshi Yamaguchi, Yoshifumi Tomomatsu | 1995-09-19 |
| 5391898 | Insulated gate bipolar transistor having high short-circuit and latch-up withstandability | — | 1995-02-21 |
| 5380670 | Method of fabricating a semiconductor device | — | 1995-01-10 |
| 5321281 | Insulated gate semiconductor device and method of fabricating same | Hiroshi Yamaguchi, Yoshifumi Tomomatsu | 1994-06-14 |
| 5304821 | MOS-gate-turnoff thyristor | — | 1994-04-19 |
| 5171696 | Semiconductor device and method of manufacturing the same | — | 1992-12-15 |
| 5170239 | Insulated gate bipolar transistor having high short-circuit SOA and high latch-up current | — | 1992-12-08 |
| 5086324 | Insulated gate bipolar transistor | — | 1992-02-04 |
| 5084401 | Insulated gate bipolar transistor and method of manufacturing the same | — | 1992-01-28 |
| 5023691 | Insulated gate bipolar transistor | — | 1991-06-11 |
| 4990975 | Insulated gate bipolar transistor and method of manufacturing the same | — | 1991-02-05 |
| 4662957 | Method of producing a gate turn-off thyristor | — | 1987-05-05 |
| 4556898 | Semiconductor device | — | 1985-12-03 |