Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6052388 | Information transmission/reception system | Yoichiro Tajima, Hiroshi Okano | 2000-04-18 |
| 6049873 | Scrambled information transmitting and receiving method | Yasuichi Kaku, Masaharu Kizaki, Takao Kanke | 2000-04-11 |