Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9238876 | Method of washing polycrystalline silicon, apparatus for washing polycrystalline silicon, and method of producing polycrystalline silicon | Kazuhiro Sakai, Tetsuya Atsumi | 2016-01-19 |
| 8875720 | Apparatus and method for washing polycrystalline silicon | Kazuhiro Sakai, Tetsuya Atsumi | 2014-11-04 |
| 8372372 | Clean bench and method of producing raw material for single crystal silicon | Kazuhiro Sakai | 2013-02-12 |
| 7976599 | Clean bench and method of producing raw material for single crystal silicon | Kazuhiro Sakai | 2011-07-12 |
| 7905963 | Apparatus and method for washing polycrystalline silicon | Kazuhiro Sakai, Tetsuya Atsumi | 2011-03-15 |