Issued Patents 2022
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11473209 | Quartz glass crucible and manufacturing method thereof | Hiroshi Kishi, Takahiro Abe, Hideki Fujiwara, Eriko Kitahara | 2022-10-18 |
| 11466381 | Quartz glass crucible | Hiroshi Kishi, Takahiro Abe, Hideki Fujiwara | 2022-10-11 |