Issued Patents 2022
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11519069 | Polycrystalline silicon manufacturing apparatus | Tetsuro Okada, Masahiko Ishida | 2022-12-06 |
| 11505862 | Method for preventing contamination of base plate | Tetsuro Okada, Masahiko Ishida | 2022-11-22 |
| 11345603 | Polycrystalline silicon bar, polycrystalline silicon rod, and manufacturing method thereof | Tetsuro Okada, Masahiko Ishida | 2022-05-31 |
| 11326257 | Polycrystalline silicon manufacturing apparatus | Tetsuro Okada, Masahiko Ishida | 2022-05-10 |
| 11242620 | Polycrystalline silicon rod and method for producing polycrystalline silicon rod | Shuichi Miyao, Tetsuro Okada, Shigeyoshi Netsu, Masahiko Ishida | 2022-02-08 |