Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11804872 | Communication device and communication signal generation method | Hisao Koga, Koji Ikeda | 2023-10-31 |
| 11184051 | Communication device and communication signal generation method | Hisao Koga, Koji Ikeda | 2021-11-23 |
| 6669832 | Electronic transaction system | Katsuro Saito, Teruo Mizutani | 2003-12-30 |