Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8958695 | Optical adding and dropping device and optical transmission apparatus | Hiroki Ooi, Takafumi Terahara, Kentaro Nakamura, Tsuyoshi Yamamoto | 2015-02-17 |
| 7119950 | Amplification method and optical amplifier for wavelength division multiplexed signal light | Etsuko Hayashi | 2006-10-10 |
| 6496300 | Optical amplifier | Susumu Kinoshita, Miki Onaka, Yasushi Sugaya, Terumi Chikama, Hiroyuki Itou +2 more | 2002-12-17 |
| 6462861 | Optical amplifying apparatus and optical communication system | Yasushi Sugaya | 2002-10-08 |
| 6411429 | Optical amplifying apparatus, wide-band optical amplifying apparatus, and optical communication system | Hiroaki Tomofuji, Motoyoshi Sekiya, Takeshi Sakamoto, Makoto Murakami, Yoshihito Onoda | 2002-06-25 |
| 6373623 | Optical amplifier for use in optical communications equipment | Susumu Kinoshita, Terumi Chikama | 2002-04-16 |
| 6335823 | Optical amplifier for use in optical communications equipment | Susumu Kinoshita, Terumi Chikama | 2002-01-01 |
| 6320694 | Optical amplifier for use in optical communications equipment | — | 2001-11-20 |