Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8811819 | Optical multiplexing terminal device, wavelength multiplexing passive optical network system and downlink wavelength transmission method | Tohru Kazawa, Norihiro Sakamoto | 2014-08-19 |
| 8675870 | Encryption apparatus | Norihiro Sakamoto | 2014-03-18 |
| 8477800 | Passive optical network system and operation method thereof | Tohru Kazawa, Norihiro Sakamoto | 2013-07-02 |
| 8467684 | Apparatus of adjusting optical signal transmission timing | Tohru Kazawa, Yusuke Yajima, Akihiko Tsuchiya, Yoshinobu Morita | 2013-06-18 |
| 8457492 | Optical access system | Tohru Kazawa, Yusuke Yajima, Akihiko Tsuchiya | 2013-06-04 |
| 8078929 | Optical line terminal and optical network terminal | Taro Tonoduka | 2011-12-13 |
| 7978972 | Optical line terminal and optical network terminal | Taro Tonoduka | 2011-07-12 |
| 7936992 | Apparatus of adjusting optical signal transmission timing | Tohru Kazawa, Yusuke Yajima, Akihiko Tsuchiya, Yoshinobu Morita | 2011-05-03 |
| 7725031 | Passive optical network system and ranging system thereof | Tohru Kazawa, Yusuke Yajima, Norihiro Sakamoto | 2010-05-25 |
| 7711268 | Passive optical network system and ranging system thereof | Tohru Kazawa, Yusuke Yajima, Norihiro Sakamoto | 2010-05-04 |
| 7680414 | Passive optical network system and operating method thereof | Tohru Kazawa, Yusuke Yajima | 2010-03-16 |
| 7548694 | Apparatus of adjusting optical signal transmission timing | Tohru Kazawa, Yusuke Yajima, Akihiko Tsuchiya, Yoshinobu Morita | 2009-06-16 |
| 7512341 | Passive optical network system and ranging system thereof | Tohru Kazawa, Yusuke Yajima, Norihiro Sakamoto | 2009-03-31 |
| 7512867 | Method for encoding/decoding error correcting code, transmitting apparatus and network | Masahiro Takatori, Takashi Mori | 2009-03-31 |
| 7489869 | Passive optical network system and ranging system thereof | Tohru Kazawa, Yusuke Yajima, Norihiro Sakamoto | 2009-02-10 |
| 7386012 | Multiplex transmission apparatuses, multiplex transmission networks, and operation method therefor | Toshiki Sugawara, Yukio Nakano, Takashi Mori | 2008-06-10 |
| 7372807 | Method and apparatus for multiplex transmission | Masazumi Noguchi, Takashi Mori, Mitsunobu Kimura, Koji Kato | 2008-05-13 |
| 7139479 | Method and apparatus for optical network administration | Masahiro Takatori, Yuichi Yamaguchi, Toshiyuki Atsumi, Tomohiro Mori, Ryuji Ishii +2 more | 2006-11-21 |
| 7024616 | Method for encoding/decoding error correcting code, transmitting apparatus and network | Masahiro Takatori, Takashi Mori | 2006-04-04 |
| 6871314 | Forward error correcting code encoding equipment, forward error correcting code decoding equipment, and transmission apparatus | Masatoshi Shibasaki, Yusuke Yajima, Takashi Mori | 2005-03-22 |
| 6735735 | Forward error correcting code encoding equipment, forward error correcting code decoding equipment, and transmission apparatus | Masatoshi Shibasaki, Yusuke Yajima, Takashi Mori | 2004-05-11 |
| 6721268 | Method and apparatus for multiplex transmission | Masazumi Noguchi, Takashi Mori, Mitsunobu Kimura, Koji Kato | 2004-04-13 |
| 6697386 | Multiplex transmission apparatuses, multiplex transmission networks, and operation method therefor | Toshiki Sugawara, Yukio Nakano, Takashi Mori | 2004-02-24 |
| 6411631 | Multiplex type transmitting apparatus | Toshiki Sugawara, Yukio Nakano, Takashi Mori | 2002-06-25 |
| 6169754 | Multiplex transmission apparatuses, multiplex transmission networks, and operation method therefor | Toshiki Sugawara, Yukio Nakano, Takashi Mori | 2001-01-02 |