Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665133 | Process for production of pure transparent quartz | Koichi Orii, Yukinobu Hara, Tomoyuki Akiyama, Yoshikazu Kikuchi | 1997-09-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665133 | Process for production of pure transparent quartz | Koichi Orii, Yukinobu Hara, Tomoyuki Akiyama, Yoshikazu Kikuchi | 1997-09-09 |