Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9264253 | Network system | Tomoyoshi Tatsumi, Shingo Sugawara | 2016-02-16 |
| 8948168 | Network system | Tomoyoshi Tatsumi, Shingo Sugawara | 2015-02-03 |
| 8630166 | Ring network and network relay device | Hitoshi Kuwata | 2014-01-14 |
| 8310917 | Switching hub and ring network | Kenji Aoshima | 2012-11-13 |
| 8259589 | Network relay device, network connection confirmation method, and network | Daisuke Adachi | 2012-09-04 |
| 7920567 | Switching hub and LAN system | Akihiro Sekiguchi | 2011-04-05 |
| 7742478 | Reply communication apparatus and ARP reply communication apparatus | Akihiro Sekiguchi | 2010-06-22 |
| 7050468 | Multiplexed signal transmitter/receiver, communication system, and multiplexing transmission method | Masaru Kuriyama | 2006-05-23 |