Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7694536 | Manufacturing apparatus of porous glass base material and glass base material for optical fiber | Makoto Yoshida | 2010-04-13 |
| 6442978 | Apparatus for sintering a porous glass base material and a method therefor | Hiroyuki Koide, Hiroshi Tsumura, Tadakatsu Shimada, Hideo Hirasawa | 2002-09-03 |