Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6848276 | Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus | Yoshiaki Shimizu, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama +5 more | 2005-02-01 |
| 6779362 | Method of making an optical fiber preform where a second elongation is based on a mark on a glass rod | Yoshiaki Shimizu, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama +5 more | 2004-08-24 |
| 6386001 | Optical fiber manufacture method including elongating a preform in a vertical direction and a horizontal direction | Yoshiaki Shimizu, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama +5 more | 2002-05-14 |