Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33426 | Multi-network system | Norihiko Sugimoto, Shunji Inada | 1990-11-06 |
| 4759015 | Ring network system for transmission of multicast information | Atsushi Takai, Kazunori Nakamura, Yoshihiro Takiyasu, Mitsuhiro Yamaga | 1988-07-19 |
| 4680756 | Multi-network system | Norihiko Sugimoto, Shunji Inada | 1987-07-14 |