Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6639471 | Power amplifier circuit, control method for power amplifier circuit, and portable terminal apparatus for mobile communication | Hisashi Adachi, Makoto Sakakura, Hiroyuki Handa, Toshio Obara | 2003-10-28 |
| 6590449 | Predistortion circuit, low-distortion power amplifier, and control methods therefor | Kaoru Ishida, Makoto Sakakura, Seiji Fujiwara | 2003-07-08 |
| 6507253 | Delay circuit and feedforward amplifier | Toshimitsu Matsuyoshi, Kaoru Ishida, Seiji Fujiwara | 2003-01-14 |