Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6761951 | Synthetic quartz glass blank | Hisatoshi Otsuka, Akira Fujinoki, Hiroyuki Nishimura, Takayuki SHIMAKAWA | 2004-07-13 |
| 6705115 | Synthetic quartz glass and production process | Koji Matsuo, Hisatoshi Otsuka | 2004-03-16 |