Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11795099 | Furnace gas feeding device, optical fiber production device, and optical fiber production method | Satoshi Yoshikawa | 2023-10-24 |
| 9567252 | Optical fiber drawing method and optical fiber drawing apparatus | Iwao Okazaki, Takashi Yamazaki, Tatsuya Konishi | 2017-02-14 |
| 6735983 | Optical fiber drawing method and drawing furnace | Toshiki Taru, Ichiro Tsuchiya, Katsuya Nagayama, Kazuya Kuwahara | 2004-05-18 |
| 6711335 | Heat resistant optical fiber core | Makoto Shimizu, Yuji Kubo, Tomoyuki Hattori | 2004-03-23 |
| 6546760 | Optical fiber drawing furnace with a zig zag heating element | Ichiro Tsuchiya, Kohei Kobayashi, Hiroaki Ohta, Kazuya Kuwahara, Hideo Miyaki +1 more | 2003-04-15 |
| 6519404 | Method and apparatus for fabricating coated optical fiber, and coated optical fiber | Motohide Yoshida, Masao Koida, Katsuya Nagayama | 2003-02-11 |
| 5922098 | Cleaning a glass preform with a high temperature inert gas during the drawing of an optical fiber | Toshiaki Kakii, Katsuzo Mukai, Satoshi Tanaka | 1999-07-13 |
| 5449393 | Method and apparatus for detecting irregular part of optical fiber | Yutaka Iwamura | 1995-09-12 |
| 4892572 | Optical fiber drawing apparatus | Shigeru Ito, Takashi Yamazaki | 1990-01-09 |
| 4770898 | Method for producing optical fiber | Masakatsu Sugai, Yuji Kameo | 1988-09-13 |
| 4539219 | Method for coating optical transmission glass fibers | Toru Yamanishi, Masaaki Yoshida | 1985-09-03 |
| 4512281 | Method for coating optical transmission glass fibers | Toru Yamanishi, Masaaki Yoshida | 1985-04-23 |