Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11533833 | Electromagnetic wave shielding sheet and printed wiring board | Daisuke Kishi, Takahiro Matsuzawa, Tsutomu Hayasaka | 2022-12-20 |
| 11172599 | Electromagnetic-wave shielding sheet and electronic component-mounted substrate | Kazunori MATSUDO, Kenji Ando, Tsutomu Hayasaka | 2021-11-09 |
| 10972188 | Transmission apparatus and transmission method | Tomoyuki Kato, Tomoaki Takeyama | 2021-04-06 |
| 10820457 | Electromagnetic wave shielding sheet and printed wiring board | Daisuke Kishi, Takahiro Matsuzawa, Tsutomu Hayasaka | 2020-10-27 |
| 10571775 | Optical transmission apparatus, optical transmission system, and method of controlling excitation light frequency | — | 2020-02-25 |
| 10567081 | Transmission system and transmission method | Tooru Matsumoto | 2020-02-18 |
| 10451955 | Optical transmission apparatus, optical transmission system, and method of controlling excitation light frequency | — | 2019-10-22 |
| 9977126 | Radar apparatus | Hiroyuki Ishimori | 2018-05-22 |
| 9703315 | Transmission device and time synchronization method | Mitsuya Kawashita, Kazuhiro Kunimatsu | 2017-07-11 |
| 9240666 | Optical amplification device and method of controlling optical module | Mitsuya Kawashita, Jinlin Zhang, Eiji Maeda | 2016-01-19 |
| 9215009 | Light output control apparatus | — | 2015-12-15 |
| 9167319 | Optical packet switching system | — | 2015-10-20 |
| 8947767 | Excitation light source for raman amplification, raman amplifier, and optical transmission system | Norifumi Shukunami, Takeshi Hoshida | 2015-02-03 |
| 8891966 | Optical communication device and signal adjusting method | Tatsuya Toyozumi, Koji Matsunaga, Yasuo Tanaka, Hironobu Fukuura, Wataru Kawasaki | 2014-11-18 |
| 8886039 | Optical packet switching system, optical packet switching device, and optical packet transmitter device | Kimio Uekama | 2014-11-11 |
| 8879145 | Raman amplifier | Tomoaki Takeyama, Shingo Hara, Kosuke Komaki | 2014-11-04 |
| 8879910 | Optical packet switching system and optical packet transmitter device | Kimio Uekama | 2014-11-04 |
| 8837941 | Optical packet switching system and optical packet switching device | Kimio Uekama | 2014-09-16 |
| 8805200 | Optical transmission system | — | 2014-08-12 |
| 8798462 | Optical packet switching system | — | 2014-08-05 |
| 8755374 | Optical packet switch device | Wataru Kawasaki | 2014-06-17 |
| 8724989 | Optical packet switching system | — | 2014-05-13 |
| 8705958 | Optical packet switching apparatus, optical packet switching system, and optical packet in-line amplifier apparatus | Reiko Sato | 2014-04-22 |
| 8542996 | Optical packet switching apparatus | Wataru Kawasaki | 2013-09-24 |
| 8077384 | Optical amplifier, and optical transmission system including the optical amplifier | — | 2011-12-13 |