Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6698240 | Apparatus for manufacturing glass base material and a method for manufacturing glass base material | Hiroshi Tsumura, Hiroyuki Koide, Kazuhisa Hatayama, Go Ogino, Tadakatsu Shimada +1 more | 2004-03-02 |
| 6672112 | OVD apparatus including air-regulating structure | Tadakatsu Shimada, Hiroshi Machida, Masataka Watanabe, Hiroshi Tsumura, Hideo Hirasawa | 2004-01-06 |