Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12282061 | Wafer test system, probe card replacing method, and prober | Akira Yamaguchi, Yuta Sato, Naoki Kasai, Naoyuki Yamazoe, Tetsuya Yasunaka +4 more | 2025-04-22 |
| 9755777 | Optical transmitter and optical transmission method | Koji Bato, Tomoyuki Sakata, Tatsuro Kishida, Koji Matsunaga, Tatsuya Toyozumi +1 more | 2017-09-05 |
| 9720641 | Playback management device and program used therefor | Takayasu Satake, Mamoru YAMASHIKI | 2017-08-01 |
| 9450698 | Optical transmission device, optical transmission system, and optical transmission method | Koji Matsunaga, Tatsuya Toyozumi, Yasuo Tanaka, Yuichiro Sakane, Koji Bato +1 more | 2016-09-20 |
| 9270382 | Optical communication apparatus and control method thereof | Yuichiro Sakane, Koji Matsunaga, Yasuo Tanaka, Tatsuya Toyozumi, Koji Bato +1 more | 2016-02-23 |
| 9112637 | Optical transmission device and method | Yuichiro Sakane, Koji Bato, Tatsuya Toyozumi, Koji Matsunaga, Tatsuhiko Saito | 2015-08-18 |
| 8897638 | Optical packet switching system | Koshi Kitajima, Satoshi Fukutomi | 2014-11-25 |
| 8891966 | Optical communication device and signal adjusting method | Tatsuya Toyozumi, Koji Matsunaga, Yasuo Tanaka, Hironobu Fukuura, Shota Mori | 2014-11-18 |
| 8755374 | Optical packet switch device | Shota Mori | 2014-06-17 |
| 8718470 | Optical packet switching apparatus | — | 2014-05-06 |
| 8630541 | Wavelength division multiplexing transmission apparatus for controlling the wavelength of an FBTL optical module, and wavelength control method employed for wavelength division multiplexing transmission apparatus equipped with the FBTL optical module | — | 2014-01-14 |
| 8542996 | Optical packet switching apparatus | Shota Mori | 2013-09-24 |
| 7577873 | Transmission apparatus | Koshi Kitajima | 2009-08-18 |
| 7409029 | Transmission device for automatically set an optimal point for a signal decision making | Sunao Ito | 2008-08-05 |