Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7854157 | Method of elongating optical fiber base material, and apparatus for elongating the same | Soichiro Kemmochi, Waichi Yamamura, Takaaki Nacao | 2010-12-21 |
| 6848276 | Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus | Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe +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, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe +5 more | 2004-08-24 |
| 6742363 | Straightening a glass rod for use in making an optical fiber preform | Waichi Yamamura, Tadakatsu Shimada, Hideo Hirasawa | 2004-06-01 |
| 6640589 | Glass base material drawing apparatus and method for drawing glass base material | Shoji Hoshino, Tadakatsu Shimada, Waichi Yamamura, Hideo Hirasawa | 2003-11-04 |
| 6386001 | Optical fiber manufacture method including elongating a preform in a vertical direction and a horizontal direction | Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe +5 more | 2002-05-14 |