Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11377755 | N-type silicon single crystal production method, n-type silicon single crystal ingot, silicon wafer, and epitaxial silicon wafer | Koichi Maegawa, Yasuhito Narushima, Fukuo Ogawa, Yuuji Tsutsumi | 2022-07-05 |
| 11242617 | Method for producing silicon single crystal | Koichi Maegawa, Yasuhito Narushima, Fukuo Ogawa | 2022-02-08 |