Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8248689 | Distributed Raman amplifying system, start-up method thereof, and optical device | Yasushi Sugaya, Togo Fukushi, Miki Onaka, Kiyotoshi Noheji | 2012-08-21 |
| 8139285 | Raman amplifying device and control method | Miki Onaka, Kiyotoshi Noheji, Togo Fukushi | 2012-03-20 |
| 8054538 | Raman amplification apparatus and distributed raman amplification system as well as starting up method for distributed raman amplification system | Kiyotoshi Noheji, Miki Onaka, Togo Fukushi | 2011-11-08 |
| 8049955 | Optical amplification apparatus, optical communication apparatus, and optical communication method | Miki Onaka, Yasushi Sugaya, Togo Fukushi, Kiyotoshi Noheji, Takashi Hayasaka | 2011-11-01 |
| 8004751 | Wavelength division multiplexing optical transmission system utilizing distributed raman amplification | Miki Onaka, Kiyotoshi Noheji, Togo Fukushi | 2011-08-23 |
| 7551828 | Optical transmission device for controlling optical level of transmission signal in optical transmission system | Yuji Shimada, Takuji Maeda, Kouji Nekoda, Taro Asao | 2009-06-23 |
| 7551857 | Optical transmission system | Tougo Fukushi, Hideaki Sugiya, Akira Yamamoto | 2009-06-23 |
| 6766392 | Electronic apparatus, control circuit for electronic apparatus, and method of controlling electronic apparatus | Hajime Furukawa, Takeshi Suzuki | 2004-07-20 |
| 6223294 | Pen-input information processing apparatus with pen activated power and state control | — | 2001-04-24 |