Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10036100 | Apparatus for producing silicon single crystal | Masahiro Akiba, Junya Tokue, Susumu Sonokawa | 2018-07-31 |
| 9587325 | Method for calculating a height position of silicon melt surface, method for pulling silicon single crystal, and silicon single crystal pulling apparatus | Naoki Masuda | 2017-03-07 |
| 8441623 | Method for detecting the diameter of a single crystal and single crystal pulling apparatus | Susumu Sonokawa | 2013-05-14 |
| 8211228 | Method for producing single crystal and a method for producing annealed wafer | Ryoji Hoshi | 2012-07-03 |
| 7326395 | Method for producing a single crystal and silicon single crystal wafer | Izumi Fusegawa, Nobuaki Mitamura | 2008-02-05 |
| 6764548 | Apparatus and method for producing silicon semiconductor single crystal | Ryoji Hoshi, Izumi Fusegawa, Tomohiko Ohta, Yuuichi Miyahara, Tetsuya Igarashi | 2004-07-20 |
| 5888298 | Member-handling mechanism, and member-handling jig for a crystal pulling apparatus | Satoshi Soeta, Atsushi Iwasaki, Shinobu Takeyasu | 1999-03-30 |