Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826927 | Synthetic quartz powder, its production process, and synthetic quartz crucible | Takahiro Sato | 2004-12-07 |
| 6808744 | Method for preparing and regenerating a composite crucible | Yoshiyuki Tsuji, Ken-ichi Hiroshima | 2004-10-26 |