Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12114157 | Service start method and communication system | Manabu YOSHINO, Takashi Yamada, Hiroo Suzuki | 2024-10-08 |
| 11354254 | Data processing system, central arithmetic processing apparatus, and data processing method | Takahiro Suzuki, Sang-Yuep KIM | 2022-06-07 |
| 9866327 | Distributed radio communication base station system, base band unit, remote radio unit, and method for operating distributed radio communication base station system | Naotaka SHIBATA, Seiji Yoshida, Shigeru Kuwano, Jun Terada | 2018-01-09 |
| 9788270 | Optical-wireless access system | Noriko Ilyama, Naotaka SHIBATA | 2017-10-10 |
| 9693302 | Optical wireless access system | Noriko Iiyama, Naotaka SHIBATA | 2017-06-27 |
| 9680595 | Optical line terminal and optical network unit | Ryogo Kubo, Akihiro Otaka | 2017-06-13 |
| 9596046 | Optical line terminal and optical network unit | Ryogo Kubo, Akihiro Otaka | 2017-03-14 |
| 8929737 | Optical line terminal and optical network unit | Ryogo Kubo, Akihiro Otaka | 2015-01-06 |
| 7389048 | Optical wavelength-division multiple access system and optical network unit | Katsumi Iwatsuki | 2008-06-17 |
| 7206510 | Ring network using multi-wavelength generator | Hiroo Suzuki, Masamichi Fujiwara, Mitsuhiro Teshima, Koji Akimoto, Shingo Kawai +2 more | 2007-04-17 |
| 7203422 | Optical network unit, wavelength splitter, and optical wavelength-division multiplexing access system | Katsumi Iwatsuki | 2007-04-10 |
| 7155127 | Optical communication system, optical communication unit, and optical transceiving package | Koji Akimoto, Mitsuhiro Teshima, Katsumi Iwatsuki, Masaki Fukui | 2006-12-26 |
| 7127168 | Multi-wavelength optical modulation circuit and wavelength-division multiplexed optical signal transmitter | Katsuhiro Araya, Noboru Takachio, Koji Akimoto, Mitsuhiro Teshima, Masamichi Fujiwara +3 more | 2006-10-24 |
| 7003226 | Wavelength division multiplex optical transmission system | Tadashi Sakamoto, Shigeki Aisawa, Masahiko Jinno, Seiji Norimatsu | 2006-02-21 |
| 6744546 | Multilevel light-intensity modulating circuit | Takuya Nakamura, Mitsuhiro Teshima, Noboru Takachio | 2004-06-01 |
| 6490064 | Wavelength division multiplexing optical transmission system | Tadashi Sakamoto, Shigeki Aisawa, Masahiko Jinno, Seiji Norimatsu | 2002-12-03 |