Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8582467 | Method for preventing control packet looping and bridge apparatus using the method | Masaki Hirota, Kazuto Nishimura, Yasushi Sasakawa | 2013-11-12 |
| 8027262 | Method and apparatus for keeping track of virtual LAN topology in network of nodes | Kenichi Kawarai, Hiroyuki Kaneko, Kazuyuki Tajima | 2011-09-27 |
| 7957267 | Fault detection device | Yasushi Sasagawa, Kenichi Kawarai, Masami Doukai | 2011-06-07 |
| 7860031 | Apparatus and method for processing control packet in spanning tree protocol | Yasushi Sasagawa, Masami Doukai | 2010-12-28 |
| 7120329 | Optical crossconnect device and monitoring method of optical crossconnect device | — | 2006-10-10 |