Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8343275 | Single crystal growth method and single crystal pulling apparatus for improving yield and productivity of single crystal | Yuuichi Miyahara, Atsushi Iwasaki | 2013-01-01 |
| 6153009 | Method for producing a silicon single crystal and the silicon single crystal produced thereby | Toshiharu Uesugi, Toshio Hisaichi, Izumi Fusegawa, Tomohiko Ohta, Tetsuya Igarashi | 2000-11-28 |
| 5795383 | Method and mechanism for lifting gas flow-guide cylinder of a crystal pulling apparatus | Hideo Okamoto, Toshiharu Uesugi, Atsushi Iwasaki | 1998-08-18 |
| 5394829 | Device for pulling silicon single crystal | Toshiharu Uesugi, Koji Mizuishi, Atsushi Iwasaki, Tadashi Niwayama | 1995-03-07 |
| 5248378 | Method and apparatus for producing silicon single crystal | Izumi Fusegawa, Hirotoshi Yamagishi, Atsushi Iwasaki, Akiho Maeda, Shinobu Takeyasu +2 more | 1993-09-28 |
| 5131974 | Method of controlling oxygen concentration in single crystal and an apparatus therefor | Susumu Sonokawa, Atsushi Ozaki, Toshio Hisaichi | 1992-07-21 |