Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 6747780 | Electrochromic organic polymer synthesis and devices utilizing electrochromic organic polymers | Chunye Xu | 2004-06-08 |
| 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 |
| 5260816 | Optical amplifier with erbium-doped fiber | Noboru Edagawa, Yoshihiro Yoshida, Kazuo Koya | 1993-11-09 |
| 5246475 | Method for preparing a fused silica glass body co-doped with a rare earth element and aluminum | Noboru Edagawa, Yoshihiro Yoshida, Tadakatsi Shimada, Kazuo Koya | 1993-09-21 |