Issued Patents All Time
Showing 1–25 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8699126 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Susumu Kinoshita | 2014-04-15 |
| 8320040 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Susumu Kinoshita | 2012-11-27 |
| 8004752 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Susumu Kinoshita | 2011-08-23 |
| 7474459 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Susumu Kinoshita | 2009-01-06 |
| 7224517 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Susumu Kinoshita | 2007-05-29 |
| 7142785 | Light branching/inserting apparatus and light branching apparatus using wavelength selection filter | Kazue Otsuka, Hiroshi Onaka | 2006-11-28 |
| 7088922 | Wavelength division multiplexing optical communication system | Hiroaki Tomofuji, Hiroshi Onaka | 2006-08-08 |
| 6891662 | Optical amplifier and method for amplifying wavelength multiplexed transmission signal light | Yasushi Sugaya, Etsuko Hayashi, Sinya Inagaki, Norifumi Shukunami | 2005-05-10 |
| 6873457 | Optical amplifier, excitation light source control method for use in optical amplifier, and optical amplifier control method | Susumu Kinoshita | 2005-03-29 |
| 6807376 | Gain equalizer which includes a plurality of optical filters for equalizing the gain of an optical amplifier | Naomasa Shimojoh, Takafumi Terahara | 2004-10-19 |
| 6738181 | Optical sending apparatus and channel extension method | Hiroshi Nakamoto, Takao Naito | 2004-05-18 |
| 6661974 | Optical transmitter and optical transmission system | Yuichi Akiyama, George Ishikawa, Hiroki Ooi | 2003-12-09 |
| 6647211 | REMOTE CONTROL DEVICE OF ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING EQUALIZER USING ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING OPTICAL ADD/DROP MULTIPLEXER USING ACOUSTO-OPTIC TUNABLE FILTER | Takafumi Terahara | 2003-11-11 |
| 6631026 | Optical amplifier, excitation light source control method for use in optical amplifier, and optical amplifier control method | Susumu Kinoshita | 2003-10-07 |
| 6583900 | Optical transmission apparatus, optical transmission system, and optical terminal station | Hiroshi Onaka, Hideyuki Miyata, Kazue Otsuka, Yutaka Kai, Tadao Nakazawa | 2003-06-24 |
| 6545784 | Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit | Kazue Okazaki, Hiroshi Onaka, Hideyuki Miyata, Yutaka Kai | 2003-04-08 |
| 6542291 | Optical amplifier excitation light source control method for use in optical amplifier and optical amplifier control method | Susumu Kinoshita | 2003-04-01 |
| 6538782 | Light branching/inserting apparatus and light branching apparatus using wavelength selection filter | Kazue Otsuka, Hiroshi Onaka | 2003-03-25 |
| 6507431 | Remotely pumping type multi-wavelength light transmission system | Yasushi Sugaya | 2003-01-14 |
| 6496300 | Optical amplifier | Susumu Kinoshita, Miki Onaka, Yasushi Sugaya, Chihiro Ohshima, Hiroyuki Itou +2 more | 2002-12-17 |
| 6480329 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Susumu Kinoshita | 2002-11-12 |
| 6411411 | Optical wavelength selective control apparatus | Kazue Okazaki | 2002-06-25 |
| 6400499 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Susumu Kinoshita | 2002-06-04 |
| 6373623 | Optical amplifier for use in optical communications equipment | Chihiro Ohshima, Susumu Kinoshita | 2002-04-16 |
| 6369938 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Susumu Kinoshita | 2002-04-09 |