Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7535059 | Semiconductor device and manufacturing method of the semiconductor device | Koh Yoshikawa, Akio Sugi, Kouta Takahashi, Manabu Takei, Haruo Nakazawa | 2009-05-19 |
| 6469344 | Semiconductor device having low on resistance high speed turn off and short switching turn off storage time | Yuichi Harada | 2002-10-22 |
| 6346740 | Semiconductor device | — | 2002-02-12 |
| 6278140 | Insulated gate thyristor | Yuichi Harada, Tadayoshi Iwaana | 2001-08-21 |
| 6091087 | Insulated gate thyristor | Yuichi Harada, Tadayoshi Iwaana | 2000-07-18 |
| 6072199 | Insulated gate bipolar transistor | — | 2000-06-06 |
| 6054728 | Insulated gate thyristor | Yuichi Harada, Tadayoshi Iwaana | 2000-04-25 |
| 5981984 | Insulated gate thyristor | Tadayoshi Iwaana, Yuichi Harada | 1999-11-09 |
| 5936267 | Insulated gate thyristor | — | 1999-08-10 |
| 5914503 | Insulated gate thyristor | Yuichi Harada | 1999-06-22 |
| 5874751 | Insulated gate thyristor | Yuichi Harada, Tadayoshi Iwaana | 1999-02-23 |
| 5684306 | Insulated gate thyristor | — | 1997-11-04 |
| 5659185 | Insulated Gate thyristor | — | 1997-08-19 |
| 5644150 | Insulated gate thyristor | — | 1997-07-01 |
| 5637888 | Insulated gate thyristor | — | 1997-06-10 |
| 5614738 | Insulated gate thyristor having a polysilicon resistor connected to its base | — | 1997-03-25 |
| 5360983 | Insulated gate bipolar transistor having a specific buffer layer resistance | — | 1994-11-01 |
| 5326993 | Insulated gate bipolar transistor | — | 1994-07-05 |
| 5306929 | MOS controlled thyristor | — | 1994-04-26 |
| 5122854 | MOS control thyristor | — | 1992-06-16 |