Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12386129 | Optical fiber ribbon | Takashi Fujii, Fumiaki Sato | 2025-08-12 |
| 11953744 | Optical fiber ribbon and optical fiber cable | Takashi Fujii, Fumiaki Sato | 2024-04-09 |
| 11927798 | Optical fiber | Haruki Okuyama, Takahisa Yamaguchi, Takashi Fujii | 2024-03-12 |
| 11919804 | Resin composition, secondary coating material for optical fiber, optical fiber, and method for manufacturing optical fiber | Katsushi Hamakubo, Chiaki TOKUDA, Takashi Fujii | 2024-03-05 |
| 11828996 | Optical fiber ribbon and optical fiber cable | Takashi Fujii, Fumiaki Sato | 2023-11-28 |
| 11820704 | Resin composition, secondary coating material for optical fiber, optical fiber, and method for producing optical fiber | Katsushi Hamakubo, Chiaki TOKUDA, Kazuya TOKUDA | 2023-11-21 |
| 11579358 | Optical fiber | Katsushi Hamakubo, Chiaki TOKUDA, Tatsuya Konishi | 2023-02-14 |
| 11472735 | Optical fiber | Chiaki TOKUDA, Katsushi Hamakubo | 2022-10-18 |
| 11465317 | Method for manufacturing optical fiber | Haruki Okuyama, Takahisa Yamaguchi, Takashi Fujii | 2022-10-11 |
| 11428866 | Method for manufacturing optical fiber with oxygen-strengthened UV-resin coating | Haruki Okuyama, Takashi Fujii | 2022-08-30 |
| 11415769 | Intermittent connection-type optical fiber tape core wire, optical fiber cable, and method for manufacturing intermittent connection-type optical fiber tape core wire | Fumiaki Sato, Yoshiaki Nagao, Tsuguo AMANO, Ken Takahashi, Katsushi Hamakubo +1 more | 2022-08-16 |
| 11372155 | Optical fiber and method for manufacturing optical fiber | Kumiko Tachibana, Takashi Fujii | 2022-06-28 |
| 11073655 | Optical fiber and ultraviolet ray curable resin composition | Tatsuya Konishi, Takashi Fujii | 2021-07-27 |
| 10241262 | Optical fiber | Masuo Iida, Takashi Fujii | 2019-03-26 |
| 10054736 | Optical fiber | Masuo Iida, Kentaro Okamoto, Takashi Fujii | 2018-08-21 |
| 9964700 | Optical fiber core and optical fiber tape core | Kumiko Tachibana, Takashi Fujii | 2018-05-08 |
| 9891381 | Coated optical fiber | Masuo Iida, Kumiko Tachibana, Takashi Takada, Takashi Fujii | 2018-02-13 |
| 9874684 | Optical fiber | Masuo Iida, Takashi Fujii | 2018-01-23 |
| 9746605 | Optical fiber | Kazuyuki SOHMA, Takehiko Kawano, Takashi Fujii | 2017-08-29 |
| 9733425 | Optical fiber and process for producing the same | Kazuyuki SOHMA, Takashi Fujii | 2017-08-15 |
| 9632241 | Optical fiber | Masuo Iida, Kumiko Tachibana, Takashi Fujii | 2017-04-25 |
| 9557477 | Coated optical fiber | Kumiko Tachibana, Takashi Fujii, Takashi Takada | 2017-01-31 |
| 9169156 | Optical fiber and method for manufacturing the same | Kumiko Tachibana, Takashi Fujii | 2015-10-27 |
| 9134495 | Optical fiber | Kumiko Tachibana, Takashi Fujii, Takashi Takada | 2015-09-15 |
| 9097867 | Coated optical fiber | Kumiko Tachibana, Takashi Fujii, Takashi Takada, Yoshinori Yamamoto | 2015-08-04 |