Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7184661 | Transmission equipment for network and network transmission system | Keiji Usuba, Yoshimi Nakagawa, Yusuke Yajima | 2007-02-27 |
| 7054334 | Pathsize control method and operation of transmission apparatus | Yoshimi Nakagawa, Takao Iwata, Takeshi Sato, Keiji Usuba | 2006-05-30 |