Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10171173 | Optical signal transmission apparatus and optical signal transmission method | Seiji Okamoto, Koichi Ishihara, Etsushi Yamazaki, Mitsuteru YOSHIDA, Tomoyoshi Kataoka +3 more | 2019-01-01 |
| 10038507 | Optical transmission system, phase compensation method, and optical reception apparatus | Mitsuteru YOSHIDA, Etsushi Yamazaki, Seiji Okamoto, Hiroyuki Uzawa, Kengo Horikoshi +6 more | 2018-07-31 |
| 9762982 | Multi-flow optical transceiver, multi-flow optical transponder and multi-flow optical node | Hidehiko Takara, Masahiko Jinno, Kohki Shibahara, Takashi Goh | 2017-09-12 |
| 9479282 | Optical communication apparatus, optical route switching apparatus and network | Masahiko Jinno, Hidehiko Takara, Akira Hirano, Yoshiaki Sone | 2016-10-25 |
| 9326049 | Multi-flow optical transceiver, multi-flow optical transponder and multi-flow optical node | Hidehiko Takara, Masahiko Jinno, Kohki Shibahara, Takashi Goh | 2016-04-26 |
| 8526438 | Bandwidth variable communication apparatus and bandwidth variable communication method | Masahiko Jinno, Hidehiko Takara, Yukio Tsukishima, Kozicki Bartlomiej, Toshihide Yoshimatsu +1 more | 2013-09-03 |
| 8005374 | Optical transmission system, optical transmitter for optical transmission system, and optical receiver for optical transmission system | Mikio Yoneyama, Masahito Tomizawa, Akira Hirano, Shoichiro Kuwahara, Tomoyoshi Kataoka +2 more | 2011-08-23 |
| 7995930 | Optical receiver using Mach-Zehnder interferometer | Mikio Yoneyama, Fumiaki Saitou, Shigeru Ono, Yosuke Takeuchi, Shoichiro Kuwahara +3 more | 2011-08-09 |
| 7734194 | Optical transmission system, optical transmitter for optical transmission system, and optical receiver for optical transmission system | Mikio Yoneyama, Masahito Tomizawa, Akira Hirano, Shoichiro Kuwahara, Tomoyoshi Kataoka +2 more | 2010-06-08 |
| 7542631 | Optical transmission system | Yutaka Miyamoto, Akihiko Matsuura | 2009-06-02 |
| 7536112 | Optical transmission system | Yutaka Miyamoto, Akihiko Matsuura | 2009-05-19 |
| 6934308 | Precoding circuit and precoding-mulitplexing circuit for realizing very high transmission rate in optical fiber communication | Mikio Yoneyama, Koichi Murata, Yutaka Miyamoto | 2005-08-23 |
| 6865348 | Optical transmission method, optical transmitter, optical receiver, and optical transmission system | Yutaka Miyamoto, Akira Hirano, Kenji Sato, Hiromu Toba, Akihiko Matsuura | 2005-03-08 |
| 6763197 | Optical transmitter and optical transmitter control method using variable duty ratio setting and alternate phase inversion for optical clock pulses | Akira Hirano, Yutaka Miyamoto, Kenji Sato, Masaki Asobe | 2004-07-13 |
| 6559996 | Optical transmission system | Yutaka Miyamoto, Shoichirou Kuwahara | 2003-05-06 |
| 5543952 | Optical transmission system | Shigeru Kuwano, Nori Shibata, Seiji Norimatsu | 1996-08-06 |