Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047020 | Method of producing vitreous silica crucible | Takeshi Fujita | 2011-11-01 |
| 7935326 | Method for purification of silica particles, purifier, and purified silica particles | Yoshiyuki Tsuji | 2011-05-03 |