Issued Patents All Time
Showing 1–25 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12204140 | Gain flattening filter, and method for manufacturing gain flattening filter | Shigehiro Nagano, Jun Kinugasa, Kazuaki Masui | 2025-01-21 |
| 12164145 | Optical fiber and method for producing optical fiber | Yuki Kawaguchi | 2024-12-10 |
| 11841529 | Optical fiber and optical cable | Yuki Kawaguchi, Masato Suzuki | 2023-12-12 |
| 11774672 | Optical fiber | Yuki Kawaguchi | 2023-10-03 |
| 11754466 | Mode-dependent loss measurement device and mode-dependent loss measuring method | Tetsuya Hayashi, Yuki Kawaguchi | 2023-09-12 |
| 11493690 | Optical fiber line, module, and method for manufacturing optical fiber line | Masato Suzuki, Yoshinori Yamamoto, Yoshiaki Tamura | 2022-11-08 |
| 11467340 | Optical fiber | — | 2022-10-11 |
| 11448821 | Slant-type fiber grating | Shigehiro Nagano, Manabu Shiozaki, Jun Kinugasa | 2022-09-20 |
| 11366267 | Optical fiber | Yoshinori Yamamoto, Keisei MORITA, Yuki Kawaguchi | 2022-06-21 |
| 11322904 | Optical amplifier and multi-core optical fiber | Hirotaka Sakuma, Tetsuya Hayashi | 2022-05-03 |
| 11316316 | Optical amplifier and multi-core optical fiber | Tetsuya Hayashi, Yoshiaki Tamura, Hirotaka Sakuma, Shigehiro Nagano | 2022-04-26 |
| 11156529 | Nonlinearity measuring method and nonlinearity measuring device | Tetsuya Hayashi | 2021-10-26 |
| 11137542 | Optical fiber | Masato Suzuki, Yuki Kawaguchi | 2021-10-05 |
| 11099322 | Optical fiber | Masato Suzuki, Yuki Kawaguchi, Yoshinori Yamamoto | 2021-08-24 |
| 10908353 | Optical fiber and slanted fiber grating | Shigehiro Nagano, Manabu Shiozaki, Jun Kinugasa | 2021-02-02 |
| 10775555 | Optical fiber line and optical fiber line manufacturing method | Masato Suzuki, Yoshiaki Tamura, Yoshinori Yamamoto, Suguru Takasaki, Saori Kubara | 2020-09-15 |
| 10585234 | Coupled multicore optical fiber and optical transmission system including same | Tetsuya Hayashi, Yoshiaki Tamura | 2020-03-10 |
| 9453966 | Optical probe | Kiyotaka Murashima, Ryo Yamaguchi | 2016-09-27 |
| 9128249 | Optical probe and optical measuring method | Mitsuharu Hirano | 2015-09-08 |
| 8868158 | Optical analyzer | — | 2014-10-21 |
| 8654320 | Beam Path Monitoring Device and Beam Path Monitoring System | Tetsuya Hayashi, Haruo Nakaji | 2014-02-18 |
| 8546722 | Laser processing apparatus and processing method employed therein | Eiichiro Yamada, Akira Inoue, Koji Nakazato, Hiroshi Kohda, Hitoshi Hatayama | 2013-10-01 |
| 8483531 | Optical fiber | Tetsuya Hayashi | 2013-07-09 |
| 8325330 | Optical fibre circuit monitoring system and monitoring device included in this system | — | 2012-12-04 |
| 7777891 | Elasticity and viscosity measuring apparatus | — | 2010-08-17 |