Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9800326 | Optical transmission device and protection wavelength selection method | Takuma Shoji, Takashi Honda, Satoru Saitoh | 2017-10-24 |
| 9226050 | Transmission apparatus and transmission method | Koichi Sugama, Hiroyuki Ishii, Yukio Katayanagi, Kenichi Hasegawa, Takashi Kaiga +2 more | 2015-12-29 |
| 8767802 | Transmission device and transmission method | Yuichi Nagaki, Koichi Sugama, Tomohiro Ueno, Takashi Kaiga, Yukio Katayanagi | 2014-07-01 |
| 7706268 | Transmission device | Masato Kobayashi, Yasushi Tateno | 2010-04-27 |
| 7680157 | Transmitting apparatus and channel speed varying method | — | 2010-03-16 |
| 7529248 | Network device provided with ethernet interface | Yoichi Konuma, Koichi Saiki, Takashi Fukagawa | 2009-05-05 |
| 7046930 | Optical communication system | — | 2006-05-16 |
| 6707963 | Wavelength division multiplexing apparatus | — | 2004-03-16 |
| 6345142 | Optical attenuation device having different type magneto-optical optical attenuation elements cascaded together | Hiroaki Nakazato | 2002-02-05 |