Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5968259 | High-purity quartz glass and method for the preparation thereof | Katsuhiko Kemmochi, Hiroyuki Miyazawa, Hiroyuki Watanabe, Kiyotaka Maekawa, Manabu Saitou | 1999-10-19 |
| 5877027 | Method for the analysis of impurity contents in silicon dioxide | Katsuhiko Kemmochi, Kiyotaka Maekawa, Manabu Saitou, Hiroyuki Miyazawa, Hiroyuki Watanabe | 1999-03-02 |