Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5652576 | Switching system and information storing equipment | Yoshikatsu Inokuma, Yusuke Yamamoto | 1997-07-29 |
| 4823342 | Time division exchange system having functions of compressing and expanding information | Takashi Morita, Koji Hirai | 1989-04-18 |