Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8603850 | Method for manufacturing solar cell using silicon powder | Hiroaki Oka | 2013-12-10 |
| 7594950 | Method and device for removing slag | Hiroaki Oka | 2009-09-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8603850 | Method for manufacturing solar cell using silicon powder | Hiroaki Oka | 2013-12-10 |
| 7594950 | Method and device for removing slag | Hiroaki Oka | 2009-09-29 |