Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8184976 | Passive optical network system and operating method thereof | Yusuke Yajima, Taishi Shinagawa | 2012-05-22 |
| 8184975 | Passive optical network system and optical line terminator | Masao Niibe, Takeshi Kiyose, Ryosuke Nishino | 2012-05-22 |
| 8145055 | Passive optical network system, optical line terminator and optical network unit | Masao Niibe, Masahiko Mizutani | 2012-03-27 |
| 8139950 | Passive optical network system, optical line terminator and, communication method of passive optical network system | Masao Niibe, Yusuke Yajima, Takeshi Kiyose, Masahiko Mizutani | 2012-03-20 |
| 8107824 | Passive optical network system and communication method therefor | Akihiko Tsuchiya, Yusuke Yajima | 2012-01-31 |
| 8090261 | Network system, optical line terminating apparatus, and optical network apparatus | Toshiki Sugawara, Hiroki Ikeda, Yusuke Yajima | 2012-01-03 |
| 8036532 | Passive optical network system, optical line terminal, and optical network unit | Kenichi Sakamoto | 2011-10-11 |
| 8023511 | Communication system, optical line terminal, and congestion control method | Kenta Komiya, Ryosuke Kurata | 2011-09-20 |
| 8005362 | Passive optical network system and optical line terminal | Norihiro Sakamoto, Yusuke Yajima | 2011-08-23 |
| 7962037 | PON system and optical network unit | Masahiko Mizutani, Takeshi Shibata, Yoshihiro Ashi, Masanobu Kobayashi, Masayuki Takase | 2011-06-14 |
| 7957647 | Passive optical network system and ranging method | Yusuke Yajima, Masaki Oohira | 2011-06-07 |
| 7936992 | Apparatus of adjusting optical signal transmission timing | Masaki Ohira, Yusuke Yajima, Akihiko Tsuchiya, Yoshinobu Morita | 2011-05-03 |
| 7908390 | Packet forwarding apparatus using token bucket algorithm and leaky bucket algorithm | Masayuki Takase, Yoshihiro Ashi, Masahiko Mizutani, Kenichi Sakamoto, Taishi Shinagawa | 2011-03-15 |
| 7889990 | Optical line terminal capable of active bandwidth allocation for passive optical network system | Kenichi Sakamoto, Ryosuke Nishino | 2011-02-15 |
| 7873277 | Passive optical network system and wavelength assignment method | Kenichi Sakamoto, Ryosuke Nishino | 2011-01-18 |
| 7840137 | Optical line terminal and optical network unit capable of alarm transmission scheme for passive optical network system | Kenichi Sakamoto, Ryosuke Nishino | 2010-11-23 |
| 7773880 | Optical access system | Kenichi Sakamoto, Yoshihiro Ashi, Ryosuke Nishino, Masayuki Takase, Masahiko Mizutani | 2010-08-10 |
| 7734178 | Passive optical network system, optical line terminal, and optical network unit | Kenichi Sakamoto | 2010-06-08 |
| 7725031 | Passive optical network system and ranging system thereof | Masaki Ohira, Yusuke Yajima, Norihiro Sakamoto | 2010-05-25 |
| 7711268 | Passive optical network system and ranging system thereof | Masaki Ohira, Yusuke Yajima, Norihiro Sakamoto | 2010-05-04 |
| 7680414 | Passive optical network system and operating method thereof | Masaki Ohira, Yusuke Yajima | 2010-03-16 |
| 7676127 | Optical communication system using WDMA and CDMA | Masahiko Mizutani, Toshiki Sugawara, Yoshihiro Ashi | 2010-03-09 |
| 7675936 | Passive optical network (PON) system | Masahiko Mizutani, Takeshi Shibata, Yoshihiro Ashi, Masanobu Kobayashi, Hideki Endo | 2010-03-09 |
| 7630637 | PON system and optical network unit | Masahiko Mizutani, Takeshi Shibata, Yoshihiro Ashi, Masanobu Kobayashi, Masayuki Takase | 2009-12-08 |
| 7620325 | Transmission apparatus with function of multi-step bandwidth assignment to other communication apparatuses | Masahiko Mizutani, Yoshihiro Ashi, Masayuki Takase, Kenichi Sakamoto, Atsushi Iwamura +1 more | 2009-11-17 |