Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8847751 | Line status detection apparatus, communication apparatus, and line status detection method | Fumio Ichihara, Akihiro Yamashita, Hidekazu Matsunobu, Nobutaka Kodama, Masahiro Maki +5 more | 2014-09-30 |
| 7319384 | Communication apparatus and communication method | Toshiyuki Wakisaka, Yuji Igata, Akihiro Yamashita, Fumio Ichihara | 2008-01-15 |