Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12326785 | Transmission side transmission device and redundancy method of transmission side transmission device | Hiroto TAKECHI, Yasutaka SUGANO, Masahiro Yokota, Hideki Maeda | 2025-06-10 |
| 12038813 | Transmitting side transmission device, receiving side transmission device, redundancy method of transmitting side transmission device, redundancy method of receiving side transmission device, program, and transmission device | Hiroto TAKECHI, Yasutaka SUGANO, Masahiro Yokota, Hideki Maeda | 2024-07-16 |
| 11812205 | Optical cross-connect device, optical transmission system, and optical transmission line connection error detection method | Masatoshi Namiki, Masahiro Yokota, Hiroki Kawahara, Hiroto TAKECHI, Masaaki Inami +2 more | 2023-11-07 |
| 11750535 | Transmitting device, receiving device, packet transfer system,packet transfer method, and packet transfer program | Hiroto TAKECHI, Hideki Maeda, Daisaku Shimazaki, Masaaki Inami, Masatoshi Namiki +1 more | 2023-09-05 |
| 11696056 | Optical transmission system and optical transmission method | Hiroto TAKECHI, Masatoshi Namiki, Hiroki Kawahara, Takeshi Seki | 2023-07-04 |
| 11588720 | Network device and network test method | Masaki Shinkai, Genichi Nishio, Masafumi Ando, Hirokazu Kobayashi, Masumi Sakamoto | 2023-02-21 |
| 11362894 | Wiring management system and wiring management method | Yoshihiko Uematsu, Hiroshi Yamamoto, Hiroki Kawahara, Toshiyuki Oka | 2022-06-14 |
| 11265628 | Optical transmission system and optical transmission method | Yoshihiko Uematsu, Toshiyuki Oka, Hiroki Kawahara, Hiroshi Yamamoto | 2022-03-01 |
| 11251877 | Optical reception device | Hiroki Kawahara, Hiroshi Yamamoto, Yoshihiko Uematsu, Toshiyuki Oka | 2022-02-15 |
| 7127168 | Multi-wavelength optical modulation circuit and wavelength-division multiplexed optical signal transmitter | Jun-ichi Kani, Noboru Takachio, Koji Akimoto, Mitsuhiro Teshima, Masamichi Fujiwara +3 more | 2006-10-24 |
| 7068412 | Multi-wavelength generating method and apparatus based on flattening of optical spectrum | Masamichi Fujiwara, Mitsuhiro Teshima, Junichi KANI, Kenichi Suzuki | 2006-06-27 |
| 6924924 | Multi-wavelength generating method and apparatus based on flattening of optical spectrum | Masamichi Fujiwara, Mitsuhiro Teshima, Junichi KANI, Kenichi Suzuki | 2005-08-02 |
| 6831774 | Multi-wavelength generating method and apparatus based on flattening of optical spectrum | Masamichi Fujiwara, Mitsuhiro Teshima, Junichi KANI, Kenichi Suzuki | 2004-12-14 |