Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7639615 | Communication path restoration method based on preplanned network note configuration | — | 2009-12-29 |
| 7558284 | Network design device | Akira Chugo, Keiji Miyazaki, Masatake Miyabe | 2009-07-07 |
| 7502389 | Signaling control method and signaling-based communication apparatus furnished in communications network system | Keiji Miyazaki | 2009-03-10 |
| 7188280 | Protecting route design method in a communication network | Keiji Miyazaki, Yasuki Fujii | 2007-03-06 |