Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11005429 | Current amplifier | Koji Tsutsumi | 2021-05-11 |
| 10530338 | Phase shift precision calibration circuitry, vector sum phase shifter, and wireless communication device | Eiji Taniguchi, Takanobu FUJIWARA, Koji Tsutsumi | 2020-01-07 |
| 10425062 | Polyphase filter and filter circuit | Atsushi Kato, Eiji Taniguchi, Takanobu FUJIWARA, Koji Tsutsumi | 2019-09-24 |
| 10404228 | Transconductance amplifier and phase shifter | Eiji Taniguchi | 2019-09-03 |
| 8571496 | Semiconductor device for signal amplification | Masakazu Mizokami, Kazuaki Hori | 2013-10-29 |
| 8116715 | Filter circuit and communication semiconductor device using the same | Tomohiro Sano, Hisayasu Sato | 2012-02-14 |
| 7382175 | Frequency mixer preventing degradation in linearity on amplitude of input signal | Hisayasu Sato | 2008-06-03 |
| 6717469 | Gain control circuit for controlling a gain in a variable gain cell | Hisayasu Satoh | 2004-04-06 |
| 6313704 | Multi-stage signal amplifying circuit | Hisayasu Satoh | 2001-11-06 |
| 6275121 | Microwave circuit for phase shifting having voltage transforming means to control switching | Yoshinobu Sasaki, Yasuharu Nakajima | 2001-08-14 |
| 6144233 | Gain control circuit for controlling operation of a variable-gain amplifier or the like | Hisayasu Sato | 2000-11-07 |
| 6100760 | Variable gain amplifier | Hisayasu Satoh, Takahiro Miki | 2000-08-08 |
| 5932926 | Microwave semiconductor integrated circuit | Takahide Ishikawa, Noriyuki Tanino | 1999-08-03 |