Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12176959 | High-speed optical transceiver | Yoshihiro Ogiso, Hiromasa Tanobe, Shogo Yamanaka, Josuke Ozaki | 2024-12-24 |
| 11994783 | IQ optical modulator | Yoshihiro Ogiso, Josuke Ozaki, Yasuaki Hashizume, Nobuhiro Nunoya | 2024-05-28 |
| 9178614 | Method for estimating amount of wavelength dispersion, wavelength dispersion compensation circuit, and receiving device | Etsushi Yamazaki, Takayuki Kobayashi, Masahito Tomizawa, Riichi Kudo, Koichi Ishihara +1 more | 2015-11-03 |
| 8971703 | Wavelength dispersion amount estimation method, wavelength dispersion compensation circuit, and reception device | Etsushi Yamazaki, Takayuki Kobayashi, Masahito Tomizawa, Riichi Kudo, Koichi Ishihara +1 more | 2015-03-03 |
| 8401344 | Semiconductor optical modulator and optical modulating apparatus | Tadao Ishibashi, Kazuhiro Maruyama, Kenji Kobayashi, Tomoyuki Akeyoshi, Nobuhiro Kikuchi +1 more | 2013-03-19 |