Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7369067 | Optical coupled type isolation circuit | Motoharu Kishi, Atsushi Iwata, Yoshitaka Murasaka, Toshifumi Imamura, Kouichi Kobinata | 2008-05-06 |
| 6980776 | Transceiver apparatus | Yoshikazu Shimada, Hiroyuki Ashida, Katsuya Ogura | 2005-12-27 |
| 6351504 | Reception circuit | Syuichi Tsuda | 2002-02-26 |
| 6236848 | Receiver integrated circuit for mobile telephone | Kazuharu Aoki | 2001-05-22 |
| 5926749 | Amplifier circuit having common AGC to IF and RF amplifiers for use in a transmitter | Kazuharu Aoki, Satoshi Urabe | 1999-07-20 |
| 5900782 | AGC voltage correction circuit | Kazuharu Aoki, Satoshi Urabe | 1999-05-04 |
| 5900781 | Multistage variable gain amplifier circuit | Kazuharu Aoki, Satoshi Urabe | 1999-05-04 |
| 5532650 | High-frequency amplifier | — | 1996-07-02 |
| 5418500 | High-frequency oscillator circuit | — | 1995-05-23 |
| 5329189 | Mixer circuit | Susumu Ushida | 1994-07-12 |
| 5327097 | Gain control circuit | Kazuharu Aoki | 1994-07-05 |
| 5115317 | Tuning apparatus for a television receiver including selectively activated amplifier and local oscillator circuits | Susumu Ushida | 1992-05-19 |
| 5057788 | 2-stage differential amplifier connected in cascade | Susumu Ushida | 1991-10-15 |
| 4983976 | Signal transmission system and method | Akimitsu Ogata, Hisato Fujisaka, Toshimitsu Nozu, Katsura Onozato, Masanobu Hirose +1 more | 1991-01-08 |
| 4799033 | Microwave separator | Moriaki Ueno | 1989-01-17 |
| 4761624 | Microwave band-pass filter | Moriaki Ueno | 1988-08-02 |
| 4725793 | Waveguide-microstrip line converter | — | 1988-02-16 |
| 4725798 | Waveguide filter | — | 1988-02-16 |
| 4724408 | Waveguide filter | — | 1988-02-09 |
| 4716387 | Waveguide-microstrip line converter | — | 1987-12-29 |
| 4701728 | Waveguide filter | — | 1987-10-20 |
| 4504796 | Microwave circuit apparatus | — | 1985-03-12 |
| 4426627 | Phase-locked loop oscillator circuit utilizing a sub-loop with a second phase comparator | Akiyuki Yoshisato | 1984-01-17 |
| 4369414 | High-frequency input circuit for two inputs | Kazuharu Aoki | 1983-01-18 |
| 4306311 | Double-balanced mixer circuit | — | 1981-12-15 |