Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12107762 | Optical and electronic integrated switch | Osamu Moriwaki, Shunichi Soma, Keita Yamaguchi, Kenya Suzuki, Seiki Kuwabara +3 more | 2024-10-01 |
| 12034484 | Optical communication network management apparatus | Takafumi Tanaka, Hideki Nishizawa, Seiki Kuwabara, Shuto Yamamoto, Seiji Okamoto | 2024-07-09 |
| 11979694 | Optical and electronic integrated switch | Osamu Moriwaki, Shunichi Soma, Keita Yamaguchi, Kenya Suzuki, Seiki Kuwabara +3 more | 2024-05-07 |
| 11930309 | Optical and electronic integrated switch | Keita Yamaguchi, Osamu Moriwaki, Shunichi Soma, Kenya Suzuki, Seiki Kuwabara +3 more | 2024-03-12 |
| 11923897 | Method, device and program for estimating optical communication status | Takayuki Nakachi, Yitu WANG, Takafumi Tanaka, Takahiro Yamaguchi, Katsuhiro Shimano | 2024-03-05 |
| 11881897 | Optical and electronic integrated switch and optical network system | Hideki Nishizawa, Seiki Kuwabara, Seiji Okamoto, Shuto Yamamoto, Shunichi Soma +3 more | 2024-01-23 |
| 11581988 | Transmitting apparatus, receiving apparatus, and transmission system | Takafumi Tanaka, Akira Hirano, Yoshiaki Yamada | 2023-02-14 |
| 11546064 | Optical transmission system and transmission mode selecting method | Hideki Nishizawa, Seiji Okamoto, Akira Hirano, Shokei Kobayashi, Fumikazu INUZUKA +4 more | 2023-01-03 |
| 11342990 | State estimating device and communication system | Seiki Kuwabara, Wataru Kawakami, Hideki Nishizawa, Seiji Okamoto, Akira Hirano +4 more | 2022-05-24 |
| 11165497 | Optical transmission system and communication condition selection method | Fumikazu INUZUKA, Shokei Kobayashi, Akira Hirano, Wataru Kawakami, Seiki Kuwabara +5 more | 2021-11-02 |
| 11108208 | Optical amplification system and optical amplification method | Takuya Oda, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2021-08-31 |
| 10686520 | Transmission quality estimation system, transmission quality estimation device, and transmission quality estimation method | Takuya Oda, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2020-06-16 |
| 10615868 | Communication system and fault detection method | Takuya Oda, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2020-04-07 |
| 10527781 | Communication system and connector | Takuya Oda, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2020-01-07 |
| 10511381 | Communication system and fault location specifying method | Takuya Oda, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka +2 more | 2019-12-17 |
| 7668459 | Dispersion monitoring method and apparatus and dispersion slope temperature dependency compensation method and apparatus | Hidehiko Takara, Takashi Yamamoto | 2010-02-23 |
| 7153613 | Process for the fabrication of a phase mask for optical fiber processing, optical fiber-processing phase mask, optical fiber with a Bragg grating, and dispersion compensating device using the optical fiber | Masaaki Kurihara, Shigekazu Fujimoto, Tetsuro Komukai | 2006-12-26 |
| 6958467 | Chirp measurement apparatus | Kunihiko Mori, Kohichi Tamura | 2005-10-25 |
| 6876792 | Phase mask for forming diffraction grating, and optical fiber and optical waveguide having diffraction grating duplicated using the phase mask | Masaaki Kurihara, Shigekazu Fujimoto, Tetsuro Komukai | 2005-04-05 |