Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5119222 | Fault examining apparatus for loop-shaped data transmission system using optical fiber | Tutomu Sakurai, Saburo Kubota | 1992-06-02 |
| 5031095 | Data transmission apparatus | Saburo Kubota, Tutomu Sakurai, Satoshi Tanaka | 1991-07-09 |
| 4941206 | Loop-type optical fiber transmission system having master and slave apparatus | Tsutomu Sakurai, Yasumasa Dougakiuchi | 1990-07-10 |