Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8582597 | Time slot interchanger | Mitsuhiro Kawaguchi, Shigeo Tani, Hideki Matsui | 2013-11-12 |
| 8355632 | Transmission apparatus | Mitsuhiro Kawaguchi, Shigeo Tani, 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, Shigeo Tani | 2012-10-23 |
| 7545831 | Transmission device for processing and transmitting signals of a plurality of channels | Takeshi Toyoyama, Masao Nakano, Shigehisa Sakahara | 2009-06-09 |
| 7443843 | Terminal relay device and relay method | Hiroyuki Matsuo, Mitsuhiro Kawaguchi, Takashi Umegaki, Koji Komatsu, Yoshimasa Itsuki | 2008-10-28 |
| 7391240 | Clock anomaly detection circuit and clock anomaly detection method | — | 2008-06-24 |
| 7145920 | SDH transmission apparatus and frame timing re-clocking method for SDH transmission apparatus | Toshiaki Kinoshita | 2006-12-05 |
| 5909175 | Connection switching circuit for ring system | Atsuki Taniguchi, Kazuo Takatsu | 1999-06-01 |