Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7907009 | High frequency amplifier | Kazutomi Mori, Kazuhiro Iyomasa, Akira Ohta, Masatoshi Nakayama | 2011-03-15 |
| 7605648 | Power amplifier | Kazuya Yamamoto, Satoshi Suzuki, Tomoyuki Asada, Takayuki Matsuzuka | 2009-10-20 |
| 7145397 | Output overvoltage protection circuit for power amplifier | Kazuya Yamamoto, Tomoyuki Asada, Satoshi Suzuki | 2006-12-05 |
| 6861906 | High-frequency semiconductor device | Kazutomi Mori, Shintaro Shinjo, Kousei Maemura, Kazuhiko Nakahara, Tadashi Takagi | 2005-03-01 |
| 6683512 | High frequency module having a laminate board with a plurality of dielectric layers | Katsurou Nakamata, Shinji Isoyama, Toshio Okuda | 2004-01-27 |
| 6271098 | Heterojunction bipolar transistor and method for producing the same | Shinichi Miyakuni | 2001-08-07 |
| 6081003 | Heterojunction bipolar transistor with ballast resistor | Shinichi Miyakuni | 2000-06-27 |
| 5973543 | Bias circuit for bipolar transistor | — | 1999-10-26 |
| 5889434 | Microwave power amplifier | Takeshi Miura, Tadashi Takagi | 1999-03-30 |
| 5864169 | Semiconductor device including plated heat sink and airbridge for heat dissipation | Masayuki Sakai, Ryo Hattori, Hiroshi Matsuoka, Manabu Katoh | 1999-01-26 |
| 5793067 | Hybrid transistor structure with widened leads for reduced thermal resistance | Takeshi Miura, Manabu Katoh | 1998-08-11 |
| 5760457 | Bipolar transistor circuit element having base ballasting resistor | Shigeru Mitsui, Takuji Sonoda, Saburo Takamiya | 1998-06-02 |
| 5726468 | Compound semiconductor bipolar transistor | Tomoki Oku, Hirofumi Nakano, Shinichi Miyakuni, Ryo Hattori | 1998-03-10 |
| 5719530 | High power bipolar transistor device | Manabu Katoh | 1998-02-17 |
| 5698871 | Heterojunction bipolar transistor | Masayuki Sakai | 1997-12-16 |
| 5414273 | Heterojunction bipolar transistor | Naohito Yoshida | 1995-05-09 |
| 5369044 | Method for producing a semiconductor device | — | 1994-11-29 |
| 5357121 | Optoelectronic integrated circuit | Miyo Miyashita, Takayuki Katoh, Kazuhiko Nakahara | 1994-10-18 |
| 5270556 | Semiconductor device with upper and lower gate electrode structure | — | 1993-12-14 |
| 5237192 | MESFET semiconductor device having a T-shaped gate electrode | — | 1993-08-17 |
| 5231040 | Method of making a field effect transistor | — | 1993-07-27 |
| 5212103 | Method of making a heterojunction bipolar transistor | — | 1993-05-18 |
| 5192700 | Method of making field effect transistor | — | 1993-03-09 |
| 5163169 | Frequency divider having the power supply connected to the GaAs substrate | Kousei Maemura, Hiroaki Seki | 1992-11-10 |
| 5101245 | Field effect transistor and method for making same | — | 1992-03-31 |