Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8422270 | Nonvolatile semiconductor memory device | Suguru Kawabata, Shinobu Yamazaki, Yoshiji Ohta, Kazuya Ishihara, Nobuyoshi Awaya +1 more | 2013-04-16 |
| 8008715 | Semiconductor device | Yusuke Kawaguchi, Tsuyoshi Ohta, Takeshi Uchihara, Takahiro Kawano, Yuji Kato | 2011-08-30 |
| 7868883 | Electro-optical device and electronic apparatus having the same | Hiroaki Mochizuki | 2011-01-11 |
| RE40712 | High-breakdown-voltage semiconductor apparatus | Koichi Sugiyama | 2009-05-19 |
| RE40705 | High-breakdown-voltage semiconductor apparatus | Koichi Sugiyama | 2009-05-05 |
| 7341900 | Semiconductor device and method for manufacturing the same | Satoshi Aida, Shigeo Kouzuki, Masaru Izumisawa | 2008-03-11 |
| 7034346 | Semiconductor device and method for manufacturing the same | Satoshi Aida, Shigeo Kouzuki, Masaru Izumisawa | 2006-04-25 |
| 7019361 | Semiconductor device and method of fabricating the same | Bungo TANAKA, Nobuyuki Sato | 2006-03-28 |
| 6958514 | Semiconductor device and method of fabricating the same | Bungo TANAKA, Nobuyuki Sato | 2005-10-25 |
| 6469425 | Electron emission film and field emission cold cathode device | Tadashi Sakai, Li Zhang, Gehan Anil Joseph Amaratunga, Ioannis Alexandrou, Mark Baxendale +1 more | 2002-10-22 |
| 6323831 | Electron emitting device and switching circuit using the same | Tomio Ono, Tadashi Sakai, Naoshi Sakuma | 2001-11-27 |
| 6297586 | Cold-cathode power switching device of field-emission type | Tadashi Sakai, Naoshi Sakuma, Tomio Ono | 2001-10-02 |
| 6236069 | Insulated-gate thyristor | Takashi Shinohe, Minami Takeuchi, Masakazu Yamaguchi, Mitsuhiko Kitagawa, Ichiro Omura +1 more | 2001-05-22 |
| 6057636 | Micro power switch using a cold cathode and a driving method thereof | Tadashi Sakai, Tomio Ono, Naoshi Sakuma, Hiromichi Ohashi | 2000-05-02 |
| 6040598 | High-breakdown-voltage semiconductor apparatus | Koichi Sugiyama | 2000-03-21 |
| 5793065 | Insulated-gate thyristor | Takashi Shinohe, Minami Takeuchi, Masakazu Yamaguchi, Mitsuhiko Kitagawa, Ichiro Omura +1 more | 1998-08-11 |
| 5703383 | Power semiconductor device | — | 1997-12-30 |
| 5554862 | Power semiconductor device | Ichiro Omura, Mitsuhiko Kitagawa, Masakazu Yamaguchi | 1996-09-10 |
| 5464994 | Insulated-gate thyristor | Takashi Shinohe, Minami Takeuchi, Masakazu Yamaguchi, Mitsuhiko Kitagawa, Ichiro Omura +1 more | 1995-11-07 |
| 5463231 | Method of operating thyristor with insulated gates | Tsuneo Ogura, Kiminori Watanabe, Akio Nakagawa, Yoshihiro Yamaguchi, Norio Yasuhara +2 more | 1995-10-31 |
| 5428228 | Method of operating thyristor with insulated gates | Tsuneo Ogura, Kiminori Watanabe, Akio Nakagawa, Yoshihiro Yamaguchi, Norio Yasuhara +2 more | 1995-06-27 |
| 5381026 | Insulated-gate thyristor | Takashi Shinohe, Minami Takeuchi, Masakazu Yamaguchi, Mitsuhiko Kitagawa, Ichiro Omura +1 more | 1995-01-10 |