Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5932889 | Semiconductor device with floating quantum box | Kohji Matsumura | 1999-08-03 |
| 5751027 | Field effect semiconductor device with a low-noise drift layer and a high-power drift layer | Minoru Sawada | 1998-05-12 |
| 5751029 | Field-effect semiconductor device having heterojunction | Shigeharu Matsushita, Daijirou Inoue, Kohji Matsumura, Minoru Sawada | 1998-05-12 |
| 5724459 | Optical modulation device and fiber optic communication system | Seiichi Banba, Minoru Sawada | 1998-03-03 |
| 5650642 | Field effect semiconductor device | Minoru Sawada, Shigeharu Matsushita, Satoshi Terada, Emi Fujii | 1997-07-22 |
| 5614814 | Negative voltage genarating circuit | Masao Nishida, Takayoshi Higashino | 1997-03-25 |
| 5590412 | Communication apparatus using common amplifier for transmission and reception | Tetsuro Sawai, Hisanori Uda, Toshikazu Hirai, Toshikazu Imaoka, Keiichi Honda +1 more | 1996-12-31 |
| 5585676 | IC chip for different type IC packages | Hisanori Uda, Tetsuro Sawai, Toshikazu Imaoka, Toshikazu Hirai | 1996-12-17 |
| 5559457 | Double-balanced mixer circuit | Hisanori Uda, Tetsuro Sawai, Toshikazu Imaoka, Toshikazu Hirai | 1996-09-24 |
| 5557141 | Method of doping, semiconductor device, and method of fabricating semiconductor device | Shigeharu Matsushita, Satoshi Terada, Emi Fujii, Takashi Kurose, Takayoshi Higashino +4 more | 1996-09-17 |
| 5528509 | Method of designing a high-frequency circuit | Tetsuro Sawai, Shigeyuki Murai, Tsutomu Yamaguchi | 1996-06-18 |
| 5477184 | Fet switching circuit for switching between a high power transmitting signal and a lower power receiving signal | Hisanori Uda | 1995-12-19 |
| 5404032 | Field-effect semiconductor device | Minoru Sawada | 1995-04-04 |
| 5350709 | Method of doping a group III-V compound semiconductor | Shigeharu Matsushita, Satoshi Terada, Emi Fujii, Takashi Kurose, Takayoshi Higashino +4 more | 1994-09-27 |