Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9831976 | Optical transmission apparatus, optical transmission system, and transmission wavelength control method | Yuji Kamura, Taku Saito | 2017-11-28 |
| 8189180 | Optical fiber transmission line measurement apparatus and system | Koji Bato, Taro Asao, Haruka Miyazaki, Akira Yamamoto, Katsumi Sugawa +2 more | 2012-05-29 |
| 7006278 | Wavelength-division multiplexing optical transmission system and repeater station therein | Takeshi Sakamoto, Tetsuo Wada | 2006-02-28 |
| 6919987 | Light wavelength-multiplexing systems | Kazuo Takatsu, Kimio Uekama, Takeshi Sakamoto | 2005-07-19 |
| 6441955 | Light wavelength-multiplexing systems | Kazuo Takatsu, Kimio Uekama, Takeshi Sakamoto | 2002-08-27 |
| 6179475 | Holder for connecting optical connectors, and optical connector connecting structure | Michihiro Takamatsu | 2001-01-30 |