Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9401878 | Packet synchronization switching method and gateway device | — | 2016-07-26 |
| 8289841 | Redundant gateway system | Takeshi Shimomura | 2012-10-16 |
| 8073133 | Echo canceler and echo canceling method | Takashi Ishiguro, Koichi Kihara, Junji ARAI | 2011-12-06 |
| 7715374 | Redundancy gateway system | Koichi Kihara, Koichi Yamazaki, Takashi Ishiguro, Yasuhiro Tazoi, Junji ARAI +1 more | 2010-05-11 |
| 6456333 | Television system discriminator and television system discrimination method | Tatsuo Yamauchi | 2002-09-24 |