Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8565604 | Apparatus and method for adjusting optical signals | Kazukiyo Ogawa | 2013-10-22 |
| 7301896 | Redundant changeover apparatus | Minoru Tateno, Masato Kobayashi, Yasushi Yoshino, Tatsuru Iwaoka, Kazumaro Takaiwa +1 more | 2007-11-27 |
| 7058298 | Optical transmission device and optical transmission system | Masato Kobayashi, Kazumaro Takaiwa, Maki Hiraizumi, Akio Takayasu | 2006-06-06 |