Issued Patents All Time
Showing 1–25 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12216309 | Optical fiber | Hirotaka Sakuma, Yuki Kawaguchi, Masato Suzuki | 2025-02-04 |
| 12030804 | Optical fiber | Hirotaka Sakuma, Akiko Funakoshi | 2024-07-09 |
| 11740404 | Optical fiber | Hirotaka Sakuma, Yuki Kawaguchi, Masato Suzuki | 2023-08-29 |
| 11714226 | Optical fiber | Yuki Kawaguchi, Hirotaka Sakuma, Masato Suzuki | 2023-08-01 |
| 11677885 | Image forming apparatus including a contact member for operating an electrostatic touch panel | — | 2023-06-13 |
| 11493690 | Optical fiber line, module, and method for manufacturing optical fiber line | Masato Suzuki, Yoshinori Yamamoto, Takemi Hasegawa | 2022-11-08 |
| 11345627 | Method of manufacturing optical fiber preform and optical fiber preform | Tetsuya Haruna, Masaaki Hirano, Yuki Kawaguchi | 2022-05-31 |
| 11316316 | Optical amplifier and multi-core optical fiber | Takemi Hasegawa, Tetsuya Hayashi, Hirotaka Sakuma, Shigehiro Nagano | 2022-04-26 |
| 11280958 | Optical fiber, colored optical fiber, and optical transmission system | Yuki Kawaguchi, Hirotaka Sakuma | 2022-03-22 |
| 11181684 | Optical fiber | Hirotaka Sakuma, Keisei MORITA | 2021-11-23 |
| 11067937 | Image forming apparatus | — | 2021-07-20 |
| 11048040 | Optical fiber | Hirotaka Sakuma, Keisei MORITA, Yuki Kawaguchi | 2021-06-29 |
| 10989864 | Optical fiber, coated optical fiber, and optical transmission system | Yuki Kawaguchi, Hirotaka Sakuma | 2021-04-27 |
| 10775555 | Optical fiber line and optical fiber line manufacturing method | Masato Suzuki, Yoshinori Yamamoto, Takemi Hasegawa, Suguru Takasaki, Saori Kubara | 2020-09-15 |
| 10723650 | Optical fiber preform | Keisei MORITA, Hirotaka Sakuma | 2020-07-28 |
| 10656326 | Optical fiber | Hirotaka Sakuma, Yuki Kawaguchi | 2020-05-19 |
| 10656329 | Optical fiber | Hirotaka Sakuma, Keisei MORITA, Yuki Kawaguchi | 2020-05-19 |
| 10585234 | Coupled multicore optical fiber and optical transmission system including same | Takemi Hasegawa, Tetsuya Hayashi | 2020-03-10 |
| 10550030 | Optical fiber | Hirotaka Sakuma, Keisei MORITA | 2020-02-04 |
| 10451787 | Optical fiber and light source device | Yoshinori Yamamoto, Masaaki Hirano | 2019-10-22 |
| 10155687 | Optical fiber preform | Tetsuya Haruna, Yuki Kawaguchi | 2018-12-18 |
| 10031282 | Optical fiber | Hirotaka Sakuma, Keisei MORITA | 2018-07-24 |
| 10031285 | Multicore optical fiber | Tetsuya Nakanishi, Tetsuya Hayashi, Takashi Sasaki, Tetsuya Haruna | 2018-07-24 |
| 9932265 | Method of making an optical fiber containing an alkali metal in the core | Tetsuya Haruna, Masaaki Hirano, Tetsuya Nakanishi | 2018-04-03 |
| 9910216 | Optical fiber | Tetsuya Haruna, Yoshihiro Tukuda | 2018-03-06 |