Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5873058 | Voice coding-and-transmission system with silent period elimination | Hisashi Yajima, Yushi Naito, Shigeaki Suzuki | 1999-02-16 |
| 4972411 | Signalling transmission system | Wataru Fushimi, Yushi Naito | 1990-11-20 |