Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6334009 | Optical signal switching apparatus | Yasuyuki Fukashiro, Shinichi Kuwano, Yukio Hayashi, Hideaki Tsushima | 2001-12-25 |
| 6229932 | Optical signal switching apparatus | Yasuyuki Fukashiro, Shinichi Kuwano, Yukio Hayashi, Hideaki Tsushima | 2001-05-08 |