Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7676127 | Optical communication system using WDMA and CDMA | Masahiko Mizutani, Tohru Kazawa, Yoshihiro Ashi | 2010-03-09 |
| 7590356 | Variable dispersion compensator | Kazuhiko Hosomi, Satoshi Makio | 2009-09-15 |
| 7518985 | Communication apparatus and communication system | Noboru Endo, Kenichi Sakamoto | 2009-04-14 |
| 7518998 | IP packet communication apparatus | Kenichi Sakamoto, Noboru Endo, Koji Wakayama, Kazuyoshi Hoshino | 2009-04-14 |
| 7512344 | Variable dispersion compensator | Satoshi Makio | 2009-03-31 |
| 7386012 | Multiplex transmission apparatuses, multiplex transmission networks, and operation method therefor | Masaki Ohira, Yukio Nakano, Takashi Mori | 2008-06-10 |
| 7257292 | Variable dispersion compensator | Satoshi Makio | 2007-08-14 |
| 7145146 | Micro-spectroscopic measuring device and micro-chemical system | Taro Ogawa, Kazuhiko Hosomi, Masataka Shirai, Toshio Katsuyama, Kaoru Umemura +3 more | 2006-12-05 |
| 7061619 | Chemical substance measuring apparatus using optical waveguides | Masataka Shirai | 2006-06-13 |
| 7054265 | Communication apparatus and communication system | Noboru Endo, Kenichi Sakamoto | 2006-05-30 |
| 6907006 | Method and apparatus for detecting faults in IP packet communication | Kenichi Sakamoto, Noboru Endo, Koji Wakayama, Kazuyoshi Hoshino | 2005-06-14 |
| 6850713 | Optical single sideband transmitter | Nobuhiko Kikuchi, Ryoji Takeyari | 2005-02-01 |
| 6785225 | Communication apparatus and communication system | Noboru Endo, Kenichi Sakamoto | 2004-08-31 |
| 6775434 | Variable optical dispersion compensator | — | 2004-08-10 |
| 6697386 | Multiplex transmission apparatuses, multiplex transmission networks, and operation method therefor | Masaki Ohira, Yukio Nakano, Takashi Mori | 2004-02-24 |
| 6625115 | Self-healing network, method for transmission line switching thereof, and transmission equipment thereof | Hiroki Ikeda, Yukio Nakano | 2003-09-23 |
| 6577438 | Method and apparatus for monitoring and controlling gain tilt in an optical amplifier | Junya Kosaka | 2003-06-10 |
| 6411631 | Multiplex type transmitting apparatus | Yukio Nakano, Masaki Ohira, Takashi Mori | 2002-06-25 |
| 6388804 | Optical amplifier | — | 2002-05-14 |
| 6219336 | Terminal multiplexer and method of constructing the terminal multiplexer | Masatoshi Takahashi, Atsushi Kubotera, Takashi Mori, Kazutaka Sakai | 2001-04-17 |
| 6169754 | Multiplex transmission apparatuses, multiplex transmission networks, and operation method therefor | Masaki Ohira, Yukio Nakano, Takashi Mori | 2001-01-02 |
| 6144633 | Self-healing network, method for transmission line switching thereof, and transmission equipment thereof | Hiroki Ikeda, Yukio Nakano | 2000-11-07 |
| 6094440 | Multiplex type transmitting apparatus | Yukio Nakano, Masaki Ohira, Takashi Mori | 2000-07-25 |
| 6049525 | Terminal multiplexer and method of constructing the terminal multiplexer | Masatoshi Takahashi, Atsushi Kubotera, Takashi Mori, Kazutaka Sakai | 2000-04-11 |