Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9277299 | Line switching device | Takashi Umegaki | 2016-03-01 |
| 9253553 | Transmission apparatus and switching method | Takashi Umegaki | 2016-02-02 |
| 8582597 | Time slot interchanger | Mitsuhiro Kawaguchi, Shosaku Yamasaki, Hideki Matsui | 2013-11-12 |
| 8564355 | Clock device | Takashi Umegaki | 2013-10-22 |
| 8355632 | Transmission apparatus | Mitsuhiro Kawaguchi, Shosaku Yamasaki, Hideki Matsui | 2013-01-15 |
| 8355318 | Node apparatus interconnecting ring network | Mitsuhiro Kawaguchi, Ryoji Azumi, Hideki Matsui | 2013-01-15 |
| 8295161 | Network apparatus that determines whether data is written into buffer based on detection of a memory error | Ryoji Azumi, Takashi Umegaki, Shosaku Yamasaki | 2012-10-23 |
| 6977889 | Cross-connect method and cross-connect apparatus | Mitsuhiro Kawaguchi | 2005-12-20 |
| 6587527 | Frame synchronism processing apparatus and frame synchronism processing method | Toshinori Koyanagi | 2003-07-01 |
| 5619532 | Digital communication system | Katsuaki Yamanaka, Hironori Aono, Toshiaki Kinoshita | 1997-04-08 |