Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910507 | Interface module for connecting collision detection LAN user terminals to different access mode switching network | Hiroshi Shimizu, Tsurayuki Kawatoko, Yoshihiko Katsura, Akihiko Obayashi | 1990-03-20 |
| 4866702 | Star topology local area network | Horoshi Shimizu, Yoshihiko Katsura, Tsurayuki Kawatoko | 1989-09-12 |
| 4675866 | Broadband network systems | Kenta Takumi | 1987-06-23 |