Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11426775 | Cleaning method, method for producing silicon single crystal, and cleaning device | Takuya Yotsui, Satoru Hamakawa | 2022-08-30 |
| 11377755 | N-type silicon single crystal production method, n-type silicon single crystal ingot, silicon wafer, and epitaxial silicon wafer | Yasuhito Narushima, Yasufumi KAWAKAMI, Fukuo Ogawa, Yuuji Tsutsumi | 2022-07-05 |
| 11242617 | Method for producing silicon single crystal | Yasuhito Narushima, Yasufumi KAWAKAMI, Fukuo Ogawa | 2022-02-08 |