Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11927923 | Time synchronization system, management device, time synchronization method, and program | Takaaki Hisashima, Hiroki Sakuma, Kaoru Arai, Ryuta Sugiyama, Shunichi Tsuboi +1 more | 2024-03-12 |
| 11815552 | Clock frequency monitoring device and clock frequency monitoring method | Takaaki Hisashima, Hiroki Sakuma, Kaoru Arai, Ryuta Sugiyama, Shunichi Tsuboi +1 more | 2023-11-14 |
| 11240141 | Time path selection device and time path selection method | Ryuta Sugiyama, Kaoru Arai, Hiroki Sakuma, Takaaki Hisashima, Shunichi Tsuboi +1 more | 2022-02-01 |
| 11196535 | Time synchronization system and time synchronization method | Hiroki Sakuma, Kaoru Arai, Takaaki Hisashima, Ryuta Sugiyama, Shunichi Tsuboi +1 more | 2021-12-07 |
| 11196499 | Time synchronization device and time synchronization method | Kaoru Arai, Hiroki Sakuma, Takaaki Hisashima, Ryuta Sugiyama, Shunichi Tsuboi +1 more | 2021-12-07 |
| 11196533 | Time synchronization system and time synchronization method | Hiroki Sakuma, Kaoru Arai, Ryuta Sugiyama, Takaaki Hisashima, Shunichi Tsuboi +1 more | 2021-12-07 |
| 9900818 | Communication system | Yusuke Miyagawa, Takayuki Kido, Takuo Akimoto, Yuki Nakanishi, Yasuhiro Watanabe | 2018-02-20 |
| 9609494 | Communication system and apparatus for providing supplementary service in femto cell | Kazuki Eguchi, Naoki Yoshida, Shunsuke Yokouchi, Toru Shiiba, Tomiharu Hamaguchi +4 more | 2017-03-28 |
| 9532292 | Communication system | Yusuke Miyagawa, Takayuki Kido, Takuo Akimoto, Yuki Nakanishi, Yasuhiro Watanabe | 2016-12-27 |
| 9264882 | Service control apparatus, relay apparatus, femtocell base station, communication system, control method and program | Yusuke Miyagawa, Takayuki Kido, Takuo Akimoto, Yuki Nakanishi, Yasuhiro Watanabe | 2016-02-16 |
| 9215576 | Communication system, femto base station, call session control server, home subscriber server, communication method, and program | Kazuki Eguchi, Naoki Yoshida, Shunsuke Yokouchi, Yasuhiro Watanabe, Hiroaki Akiyama +1 more | 2015-12-15 |
| 9191387 | Communication system for checking for unauthorized use of a terminal | Kazuki Eguchi, Naoki Yoshida, Shunsuke Yokouchi, Toru Shiiba, Yasuyuki Ueda +4 more | 2015-11-17 |
| 9088880 | Femtocell base station, gateway system, MAP-GW apparatus, communication system, control method, and program | Kazuki Eguchi, Naoki Yoshida, Shunsuke Yokouchi, Toru Shiiba, Yasuyuki Ueda +4 more | 2015-07-21 |
| 9055437 | Communication system, femtocell base station, authentication apparatus, communication method, and recording medium | Kazuki Eguchi, Koki Hayashi, Yuichiro Kameoka, Yasuhiro Watanabe, Hiroaki Akiyama +1 more | 2015-06-09 |
| 9019988 | Communication system and apparatus for providing supplementary service in femto cell | Kazuki Eguchi, Naoki Yoshida, Shunsuke Yokouchi, Toru Shiiba, Tomiharu Hamguchi +4 more | 2015-04-28 |
| 8880094 | Broadcast distribution control device, call status control device, femto cell base station, communication system, method and programme | Yasuhiro Watanabe, Hiroaki Akiyama, Daisuke Nakamura, Takeshi Nishimura, Takuo Akimoto | 2014-11-04 |
| 8699416 | Communication system, femto-cell base station, authentication device, communication method, and memory medium | Kazuki Eguchi, Yasuo Kanazawa, Yasuhiro Watanabe, Hiroaki Akiyama, Takayuki Kido +1 more | 2014-04-15 |
| 8670443 | Communication system, femto-cell base station, and communication method | Yuki Nakanishi, Yoshio Wada | 2014-03-11 |
| 8649767 | Femtocell communication system, apparatus, control method, and program | Yasuhiro Watanabe, Hiroaki Akiyama, Takayuki Kido, Takuo Akimoto, Yusuke Miyagawa | 2014-02-11 |
| 8620378 | Communication system, Femto Access Point and communication method | Kazuki Eguchi, Naoki Yoshida, Shunsuke Yokouchi, Yasuhiro Watanabe, Hiroaki Akiyama +1 more | 2013-12-31 |
| 7016706 | Mobile radio terminal | Masaaki Furusawa, Junichi Igarashi, Kiyoshi Wagai, Yasuhiro Tsukui | 2006-03-21 |
| 6516201 | Mobile radio communication apparatus having a plurality of MINs | Masatomo Kanbara, Akira Ishikura, Yoshihiro Nomura, Masakuni Hyodo, Ken Nakamura | 2003-02-04 |
| 6449499 | Dual-mode radio connected to an apparatus for communicating through in analog mode | Akira Ishikura, Yoshihiro Nomura, Masakuni Hyodo, Ken Nakamura | 2002-09-10 |
| 6408020 | Dual-mode radio communication device having function for selectively using analog or digital mode | Naoki KAJI, Akira Ishikura, Yoshihiro Nomura, Masakuni Hyodo, Ken Nakamura +1 more | 2002-06-18 |
| 6154639 | Handsfree unit | Takuya Kanazumi, Akira Ishikura, Yoshihiro Nomura, Masakuni Hyodo, Ken Nakamura | 2000-11-28 |