Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7692470 | Level conversion circuit with low consumption current characteristics | Shinji Yamamoto, Toshihiko Takeda | 2010-04-06 |
| 6756683 | High-frequency semiconductor device including a semiconductor chip | Toshihide Nobusada, Kazuhiro Yahata | 2004-06-29 |
| 6489843 | Power amplifier and communication unit | Masaaki Nishijima, Osamu Ishikawa | 2002-12-03 |
| 6313699 | Power amplifier and communication unit | Masaaki Nishijima, Osamu Ishikawa | 2001-11-06 |
| 6313700 | Power amplifier and communication unit | Masaaki Nishijima, Osamu Ishikawa | 2001-11-06 |
| 6111459 | Multi mode power amplifier and communication unit | Masaaki Nishijima, Osamu Ishikawa | 2000-08-29 |
| 6046501 | RF-driven semiconductor device | Osamu Ishikawa, Takahiro Yokoyama, Masaaki Nishijima, Shinji Yamamoto, Junji Itoh +2 more | 2000-04-04 |
| 5982236 | High-frequency power amplifier | Osamu Ishikawa, Takahiro Yokoyama, Junji Ito, Masaaki Nishijima, Shinji Yamamoto | 1999-11-09 |
| 5461265 | High-frequency variable impedance circuit having improved linearity of operating characteristics | Tadayoshi Nakatsuka | 1995-10-24 |
| 5319318 | Gain control circuit and semiconductor device | Yukio Sakai, Kazuhiro Yahata, Tadayoshi Nakatsuka, Hideki Yagita | 1994-06-07 |
| 5210504 | Semiconductor device for TV tuner and TV tuner using the same | Hideki Yagita, Tadayoshi Nakatsuka, Michiaki Tsuneoka, Yukio Sakai, Kazuhiro Yahata | 1993-05-11 |