Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4219779 | Self-oscillating mixer circuit | Keiro Shinkawa, Chuichi Sodeyama, Mitsuhisa Shinagawa | 1980-08-26 |
| 4211977 | Mixer circuit arrangement | Keiro Shinkawa, Chuichi Sodeyama | 1980-07-08 |
| 4187476 | SHF band oscillator circuit using FET | Keiro Shinkawa, Chuichi Sodeyama | 1980-02-05 |