Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11742978 | Optical network device and method for monitoring transmission line | Kazuyuki Tajima, Takahito Tanimura, Setsuo Yoshida, Eri Katayama | 2023-08-29 |
| 11418284 | Encoding circuit, decoding circuit, encoding method, and decoding method | Yohei Koganei | 2022-08-16 |
| 11283542 | Encoding circuit, decoding circuit, and encoding method | Yohei Koganei | 2022-03-22 |
| 9787396 | Optical transmission device, transmission system, and transmission method | Takahito Tanimura, Hisao Nakashima, Yuichi Akiyama | 2017-10-10 |
| 9215011 | Optical receiver and optical receiving method | Kazunari Shiota, Eri Katayama | 2015-12-15 |
| 8934789 | Optical receiver, optical reception method and optical reception system | Kazunari Shiota, Eri Katayama, Takahito Tanimura | 2015-01-13 |
| 8553825 | Phase synchronization apparatus and digital coherent light receiver | Kazunari Shiota, Yuji Ishii, Hisao Nakashima | 2013-10-08 |
| 8447190 | Distortion compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system | Takahito Tanimura, Takeshi Hoshida, Hisao Nakashima, Kazunari Shiota | 2013-05-21 |
| 7577098 | Device and method for network monitoring | Nobuyuki Tamura, Tomonori Gotoh, Kazunari Shiota, Ryota Komatsu | 2009-08-18 |
| 7496055 | Layer 2 loop detection system | Ryouichi Mutoh, Tetsuya Nishi | 2009-02-24 |