Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9226050 | Transmission apparatus and transmission method | Koichi Sugama, Masashige Kawarai, Hiroyuki Ishii, Kenichi Hasegawa, Takashi Kaiga +2 more | 2015-12-29 |
| 8767802 | Transmission device and transmission method | Yuichi Nagaki, Masashige Kawarai, Koichi Sugama, Tomohiro Ueno, Takashi Kaiga | 2014-07-01 |
| 7778160 | Device for synchronizing between an active unit and a standby unit | Takashi Kaiga, Koichi Sugama, Tsutomu Chikazawa, Kenichi Yajima, Hideo Abe +2 more | 2010-08-17 |
| 7408475 | Power supply monitoring device | Koichi Sugama, Noboru Shimizu, Tsutomu Chikazawa, Ryuji Kayama, Kenichi Yajima +1 more | 2008-08-05 |
| 6442136 | Traffic shaping device for ATM communication network | Koichi Sugama, Ryuji Kayama, Yoshihiro Onoda, Toshikazu Yamakawa | 2002-08-27 |