Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6452219 | Insulated gate bipolar transistor and method of fabricating the same | Yoshiyuki Miyase, Naohito Kato, Haruo Kawakita | 2002-09-17 |
| 6281546 | Insulated gate field effect transistor and manufacturing method of the same | Yoshihiko Ozeki, Naohito Kato | 2001-08-28 |
| 6146947 | Insulated gate type field effect transistor and method of manufacturing the same | Makio Iida, Norihito Tokura | 2000-11-14 |
| 6107661 | Semiconductor device and method of manufacturing same | Tsuyoshi Yamamoto | 2000-08-22 |
| 6100140 | Manufacturing method of semiconductor device | Tsuyoshi Yamamoto, Mitsuhiro Kataoka | 2000-08-08 |
| 5973338 | Insulated gate type bipolar-transistor | Norihito Tokura, Naohito Kato | 1999-10-26 |
| 5925911 | Semiconductor device in which defects due to LOCOS or heat treatment are suppressed | Tsuyoshi Yamamoto, Mitsuhiro Kataoka | 1999-07-20 |
| 5801445 | Semiconductor device and method of manufacturing same | Yasuo Ishihara, Haruo Kawakita | 1998-09-01 |
| 5753943 | Insulated gate type field effect transistor and method of manufacturing the same | Makio Iida, Norihito Tokura | 1998-05-19 |
| 5723882 | Insulated gate field effect transistor having guard ring regions | Naohito Kato | 1998-03-03 |
| 5719412 | Insulated gate bipolar transistor | Naohito Kato | 1998-02-17 |
| 5545908 | Vertical type insulated-gate semiconductor device | Norihiro Tokura | 1996-08-13 |
| 5519245 | Insulated gate bipolar transistor with reverse conducting current | Norihito Tokura, Naohito Kato | 1996-05-21 |
| 5510634 | Insulated gate bipolar transistor | Naohito Kato | 1996-04-23 |
| 5475258 | Power semiconductor device with protective element | Naohito Kato, Etsuji Toyoda | 1995-12-12 |
| 5464992 | Insulated gate bipolar transistor provided with a minority carrier extracting layer | Tsuyoshi Yamamoto, Naohito Kato | 1995-11-07 |
| 5448092 | Insulated gate bipolar transistor with current detection function | Norihito Tokura | 1995-09-05 |
| 5169793 | Method of making an insulated gate bipolar transistor having gate shield region | Tsuyoshi Yamamoto, Naohito Kato | 1992-12-08 |
| 4985743 | Insulated gate bipolar transistor | Norihito Tokura, Hiroyasu Ito | 1991-01-15 |
| 4653443 | Thermoelectric generating composite functioning apparatus | Takeshi Fukazawa, Hironari Kuno, Kunihiko Hara | 1987-03-31 |