Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9703053 | Optical transceiver | Osamu Kagaya, Fumihide Maeda, Hiroyoshi Ishii, Koichi Omori | 2017-07-11 |
| 9515848 | Transmission device, transmission system, and transmission method | Toshihiro Togo, Kanji Naito, Mineshi Nakashima | 2016-12-06 |
| 9264167 | Optical add drop multiplexer | Kazuo Takatsu | 2016-02-16 |
| 9197347 | Optical transmission system and noise suppression method | Mineshi Nakashima, Yasuko Nozu, Katsuhiro Shirai, Toshihiro Togo | 2015-11-24 |
| 9154373 | Failure protection method and node apparatus | Toshihiro Togo, Kanji Naito, Toru Katagiri, Mineshi Nakashima | 2015-10-06 |
| 8977130 | Optical transmission device and optical filter circuit | Kazuo Takatsu | 2015-03-10 |
| 8965197 | Method of switching optical transport network and node device | Katsuhiro Shirai, Takashi Honda, Masahiro Shioda | 2015-02-24 |
| 8681785 | Communication apparatus and path setting control method | Katsuhiro Shirai, Kanji Naito | 2014-03-25 |
| 8320278 | Communication device, system and method to form communication route | Masakazu Bamba, Yasuko Nozu, Katsuhiro Shirai | 2012-11-27 |
| 7970278 | Flexible open ring optical network and method | Susumu Kinoshita, Satoru Odate, Cechan Tian | 2011-06-28 |
| 7957429 | Transmission system | Ryuchi Moriya, Nobuhiro Rikitake, Hideki Matsui, Hirotaka Morita | 2011-06-07 |
| 7957644 | Flexible open ring optical network and method | Susumu Kinoshita, Satoru Odate, Cechan Tian | 2011-06-07 |
| 7548693 | Relay transmission apparatus | Gaku Kimura | 2009-06-16 |
| 7283739 | Multiple subnets in an optical ring network and method | Susumu Kinoshita, Ashwin Gumaste | 2007-10-16 |
| 7283740 | Optical ring network with optical subnets and method | Susumu Kinoshita, Ashwin Gumaste | 2007-10-16 |
| 7266294 | Coupler-based optical cross-connect | Yasuhiko Aoki, Susumu Kinoshita | 2007-09-04 |
| 7239649 | Transmission system | Ryuichi Moriya, Nobuhiro Rikitake, Hideki Matsui, Hirotaka Morita | 2007-07-03 |
| 7231148 | Flexible open ring optical network and method | Susumu Kinoshita, Satoru Odate, Cechan Tian | 2007-06-12 |
| 7200332 | System and method for assigning traffic to wavelengths in optical networks | Ashwin Gumaste, Susumu Kinoshita | 2007-04-03 |
| 7184663 | Optical ring network with hub node and method | Susumu Kinoshita, Ashwin Gumaste | 2007-02-27 |
| 7116905 | Method and system for control signaling in an open ring optical network | Susumu Kinoshita, Satoru Odate, Cechan Tian | 2006-10-03 |
| 7076163 | Method and system for testing during operation of an open ring optical network | Susumu Kinoshita, Satoru Odate, Cechan Tian | 2006-07-11 |
| 7024121 | Optical clock signal distribution system in WDM network | Nobuhiro Rikitake, Hirotaka Morita, Ryuichi Moriya, Hideki Matsui | 2006-04-04 |
| 6842562 | Optical add/drop node and method | Susumu Kinoshita | 2005-01-11 |
| 6735171 | SDH transmission system, SDH transmission equipment and line switching control method in SDH transmission system | — | 2004-05-11 |