Issued Patents All Time
Showing 1–25 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9407389 | Communication system and time synchronization method | Hiroaki Nakazawa, Yoshihiro Ashi, Daiji MITSUNAGA, Hideyuki Nakanishi | 2016-08-02 |
| 9379877 | Communication system and its device | Yoshihiro Ashi | 2016-06-28 |
| 9350746 | Transmission network system, transmission method, and authentication information device | Shinya Fujioka, Yoshihiro Ashi | 2016-05-24 |
| 9166874 | Communication network system and communication network configuration method | — | 2015-10-20 |
| 8864231 | Bearing assembly for worm drive and worm gear for use in a seat sliding mechanism for an automobile power seat | Masato Shimoda | 2014-10-21 |
| 8824894 | Passive optical network system | Masao Niibe | 2014-09-02 |
| 8667058 | Transfer apparatus, transfer network system, and transfer method | Shinya Fujioka, Yoshihiro Ashi | 2014-03-04 |
| 8654766 | System apparatus and method for interconnecting TDM and frame/packet communication networks | Yoshihiro Ashi, Masayuki Takase, Atsushi Iwamura, Akihiko Tanaka, Hideki Endo +1 more | 2014-02-18 |
| 8554075 | Communication system, subscriber accommodating apparatus and communication method | Yusuke Yajima, Nobuyuki Yamamoto, Yoshihiro Ashi | 2013-10-08 |
| 8488965 | Network system and optical line terminal | Toshiki Sugawara, Hiroki Ikeda | 2013-07-16 |
| 8457493 | Optical communication system and communication bandwidth control method | — | 2013-06-04 |
| 8457495 | Network system, optical network unit and optical line terminal | Toshiki Sugawara, Hiroki Ikeda | 2013-06-04 |
| 8428457 | Optical passive network system and its operation method | Yusuke Yajima, Akihiko Tsuchiya | 2013-04-23 |
| 8422375 | Communication system and communication apparatus | Yusuke Yajima, Takayuki Kanno, Takeshi Yasuda | 2013-04-16 |
| 8391715 | Passive optical network system | Masao Niibe, Shinya Fujioka | 2013-03-05 |
| 8374504 | Optical communication system | Yoshihiro Ashi, Shinya Sasaki, Tohru Kazawa | 2013-02-12 |
| 8331784 | Network system and optical line terminal | Toshiki Sugawara, Hiroki Ikeda | 2012-12-11 |
| 8331400 | Passive optical network (PON) system | Takeshi Shibata, Tohru Kazawa, Yoshihiro Ashi, Masanobu Kobayashi, Hideki Endo | 2012-12-11 |
| 8305907 | Network system and data transfer device | Atsushi Iwamura, Yoshihiro Ashi, Kenichi Sakamoto | 2012-11-06 |
| 8290369 | Optical access system | Kenichi Sakamoto, Yoshihiro Ashi, Tohru Kazawa, Ryosuke Nishino, Masayuki Takase | 2012-10-16 |
| 8283681 | Lighting device and method of manufacturing the same | Noriaki Sakamoto, Naoki Tanahashi, Tsuyoshi Hasegawa, Takaya Kusabe, Hideki Mizuhara +1 more | 2012-10-09 |
| 8254780 | Passive optical network system and fault determination method | Yusuke Yajima, Yoshihiro Ashi | 2012-08-28 |
| 8249458 | Optical communication system and method for operating the same | Yusuke Yajima | 2012-08-21 |
| 8224135 | Optical communication system using WDMA and CDMA | Toshiki Sugawara, Tohru Kazawa, Yoshihiro Ashi | 2012-07-17 |
| 8189571 | System apparatus and method for interconnecting TDM and frame/packet communication networks | Yoshihiro Ashi, Masayuki Takase, Atsushi Iwamura, Akihiko Tanaka, Hideki Endo +1 more | 2012-05-29 |