Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6231826 | Process and apparatus for refining silicon | Kazuhiro Hanazawa, Masamichi Abe, Hiroyuki Baba, Naomichi Nakamura, Yasuhiko Sakaguchi +2 more | 2001-05-15 |
| 6090361 | Method for producing silicon for use in solar cells | Hiroyuki Baba, Masamichi Abe, Kazuhiro Hanazawa, Naomichi Nakamura, Yasuhiko Sakaguchi +2 more | 2000-07-18 |
| 5961944 | Process and apparatus for manufacturing polycrystalline silicon, and process for manufacturing silicon wafer for solar cell | Fukuo Aratani, Yoshiei Kato, Yasuhiko Sakaguchi, Hiroyuki Baba, Naomichi Nakamura +1 more | 1999-10-05 |
| 5182091 | Method and apparatus for purifying silicon | Hiroyuki Baba, Fukuo Aratani | 1993-01-26 |