Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8196436 | Base material for optical fiber and method for production thereof | Mitsuo Saitou, Koichi Shiomoto, Mitsuji Sato, Seiya Yamada, Hiroshi Kato +1 more | 2012-06-12 |
| 6640589 | Glass base material drawing apparatus and method for drawing glass base material | Mitsukuni Sakashita, Tadakatsu Shimada, Waichi Yamamura, Hideo Hirasawa | 2003-11-04 |
| 6467311 | Double flame polishing method for fiber preforms | Hideki Fujii, Takaaki Nagao, Tadakatsu Shimada, Hideo Hirasawa | 2002-10-22 |
| 4385553 | Apparatus for separating liquid and residual solids | Keisuke Ihara, Atsushi Takayama, Susumu Tanioka, Kazuo Toda, Akiyosi Sasaki | 1983-05-31 |