Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11361462 | Method of evaluating inner circumference of quartz crucible and quartz crucible inner circumference evaluation apparatus | Yasunobu Shimizu, Keiichi Takanashi | 2022-06-14 |
| 5022664 | Metal gasket for joint structure | Taizo Kitada, Yoshiaki Danno, Masahiko Takagi, Yutaka Yamamoto | 1991-06-11 |