Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11108208 | Optical amplification system and optical amplification method | Takuya Oda, Tetsuro Inui, Akira Hirano, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2021-08-31 |
| 10686520 | Transmission quality estimation system, transmission quality estimation device, and transmission quality estimation method | Takuya Oda, Tetsuro Inui, Akira Hirano, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2020-06-16 |
| 10615868 | Communication system and fault detection method | Takuya Oda, Tetsuro Inui, Akira Hirano, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2020-04-07 |
| 10527781 | Communication system and connector | Takuya Oda, Tetsuro Inui, Akira Hirano, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2020-01-07 |
| 10511381 | Communication system and fault location specifying method | Takuya Oda, Tetsuro Inui, Akira Hirano, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2019-12-17 |
| 8134920 | Device and method for correcting a path trouble in a communication network | Katsuhiro Shimano, Yoshihiro Takikawa, Eiji Oki, Yasutaka Okazaki | 2012-03-13 |
| 7333424 | Upper layer node, lower layer node, and node control method | Naoaki Yamanaka, Eiji Oki, Kohei Shiomoto, Satoru Okamoto | 2008-02-19 |
| 7313094 | Node, an optical/electrical path integrated network using the node, and a program which controls the node | Eiji Oki, Kohei Shiomoto, Masaru Katayama | 2007-12-25 |
| 7313328 | Node used in photonic network, and photonic network | Eiji Oki, Kohei Shiomoto, Naoaki Yamanaka, Daisaku Shimazaki, Naohide Nagatsu +1 more | 2007-12-25 |
| 7289730 | Optical path communication network, node, and optical path setup method | Nobuaki Matsuura, Naoaki Yamanaka, Eiji Oki | 2007-10-30 |
| 7023887 | Method and system for controlling optical wavelength based on optical frequency pulling | Yoshitada Katagiri | 2006-04-04 |
| 7012740 | Optical parametric circuit | Kunihiko Mori, Atsushi Takada | 2006-03-14 |
| 6909732 | Method and apparatus for controlling optical wavelength based on optical frequency pulling | Yoshitada Katagiri | 2005-06-21 |
| 6867903 | Optical parametric circuit | Kunihiko Mori, Atsushi Takada | 2005-03-15 |
| 6560007 | Bit-phase synchronized optical pulse stream local generator | Kentaro Uchiyama, Etsu Hashimoto | 2003-05-06 |
| 6370169 | Method and apparatus for controlling optical wavelength based on optical frequency pulling | Yoshitada Katagiri | 2002-04-09 |