Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8035130 | Nitride semiconductor heterojunction field effect transistor having wide band gap barrier layer that includes high concentration impurity region | Takuma Nanjo, Muneyoshi Suita, Yuji Abe, Toshiyuki Oishi | 2011-10-11 |
| 7939943 | Nitride semiconductor device including an electrode in ohmic contact with a P-type nitride semiconductor contact layer | Katsuomi Shiozawa, Kyozo Kanamoto, Toshiyuki Oishi, Hiroshi Kurokawa, Kenichi Ohtsuka +1 more | 2011-05-10 |
| 7795738 | Nitride semiconductor device | Katsuomi Shiozawa, Kyozo Kanamoto, Hiroshi Kurokawa, Kyosuke Kuramoto, Hitoshi Sakuma | 2010-09-14 |
| 7678597 | Method of manufacturing semiconductor device including gallium-nitride semiconductor structure and a palladium contact | Kenichi Ohtsuka, Yoichiro Tarui, Yosuke Suzuki, Katsuomi Shiozawa, Kyozo Kanamoto +2 more | 2010-03-16 |
| 6635938 | Semiconductor device and manufacturing method thereof | Takumi Nakahata, Shigemitsu Maruno, Taisuke Furukawa, Naruhisa Miura, Toshiyuki Oishi | 2003-10-21 |
| 6624034 | Method of making field effect transistor in which the increase of parasitic capacitance is restrained by scale reduction | Yuji Abe, Naruhisa Miura, Kohei Sugihara, Toshiyuki Oishi | 2003-09-23 |
| 6617654 | Semiconductor device with sidewall spacers and elevated source/drain region | Toshiyuki Oishi, Kohei Sugihara, Naruhisa Miura, Yuji Abe | 2003-09-09 |
| 6566734 | Semiconductor device | Kohei Sugihara, Toshiyuki Oishi, Naruhisa Miura, Yuji Abe | 2003-05-20 |
| 6518635 | Semiconductor device and manufacturing method thereof | Katsuomi Shiozawa, Toshiyuki Oishi, Yuji Abe | 2003-02-11 |
| 6373108 | Semiconductor device having reduced sheet resistance of source/drain regions | Satoshi Yamakawa, Takumi Nakahata, Taisuke Furukawa, Shigemitsu Maruno | 2002-04-16 |
| 6232192 | Method of manufacturing semiconductor device having sidewall portions removed | Satoshi Yamakawa, Takumi Nakahata, Taisuke Furukawa, Shigemitsu Maruno | 2001-05-15 |
| 6228728 | Method of fabricating semiconductor device | Taisuke Furukawa, Takumi Nakahata, Shigemitsu Maruno, Kohei Sugihara, Yasutaka Nishioka +1 more | 2001-05-08 |
| 5539668 | Optical switching apparatus | Yuji Abe, Shigetoshi Nara | 1996-07-23 |
| 5306925 | Nonlinear optical element and method of using the same | Yuji Abe | 1994-04-26 |
| 5285080 | Method of selective light detection | Yuji Abe | 1994-02-08 |
| 5144397 | Light responsive semiconductor device | Noriaki Tsukada | 1992-09-01 |
| 5097306 | Method of tristable selective light detection with pin diode | — | 1992-03-17 |
| 4843032 | Process for producing a DFB laser with a diffraction grating superlattice | Kenzo Fujiwara | 1989-06-27 |
| 4817110 | Semiconductor laser device | Kenzo Fujiwara, Noriaki Tsukada, Keisuke Kojima, Yoshinori Nomura, Teruhito Matsui | 1989-03-28 |
| 4788689 | Composite resonator-type semiconductor laser device | Kenzo Fujiwara | 1988-11-29 |
| 4786951 | Semiconductor optical element and a process for producing the same | Kenzo Fujiwara | 1988-11-22 |