Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9051203 | Black synthetic quartz glass with transparent layer and method for producing the same | Hiroyuki Watanabe, Tatsuhiro Sato | 2015-06-09 |
| 7790078 | Process for producing silica glass product | Hiroyuki Watanabe, Akira Fujinoki, Kazuhisa Hayakawa, Shingo Niinobe | 2010-09-07 |