Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7194171 | Dispersion compensating optical fiber, dispersion compensating device, optical transmission line and optical transmission system | Masao Tsukitani, Eisuke Sasaoka, Yuichi Ohga | 2007-03-20 |
| 7068901 | Optical fiber preform producing method, optical fiber production method, and optical fiber | Masaaki Hirano, Tomoyuki Yokokawa, Takashi Sasaki | 2006-06-27 |
| 7062941 | Manufacturing method of optical fiber preform | Masashi Onishi, Masaaki Hirano, Hideyuki Ijiri | 2006-06-20 |
| 7010203 | Optical fiber manufacturing method and optical fiber | Tomoyuki Yokokawa, Masaaki Hirano | 2006-03-07 |
| 6997016 | Method and apparatus for manufacturing glass tube | Tomomi Moriya, Masashi Onishi, Kazuyuki SOHMA, Masaaki Hirano, Tadashi Enomoto | 2006-02-14 |
| 6898361 | Dispersion-compensating optical fiber and optical transmission line | Masaaki Hirano, Masashi Onishi | 2005-05-24 |
| 6836605 | Optical fiber preform, production method thereof, and optical fiber produced from the preform | Masaaki Hirano, Masashi Onishi | 2004-12-28 |
| 6466721 | Dispersion compensating optical fiber and optical transmission line | Masao Tsukitani, Eisuke Sasaoka, Yuichi Ohga | 2002-10-15 |
| 6427044 | Optical fiber | Yuichi Ohga, Masashi Onishi | 2002-07-30 |