Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12227872 | Single-crystal pulling apparatus and single-crystal pulling method | Wataru Yajima, Kosei Sugawara, Hiroyuki Kamada, Tomohiko Ohta | 2025-02-18 |
| 12188153 | Single-crystal pulling apparatus with saddle-shaped superconducting coils and single-crystal pulling method | Kosei Sugawara, Hiroyuki Kamada, Takahide ONAI, Tomohiko Ohta | 2025-01-07 |
| 10400353 | Method for controlling resistivity and N-type silicon single crystal | Ryoji Hoshi, Hiroyuki Kamada | 2019-09-03 |
| 10253425 | Single-crystal pulling apparatus and single-crystal pulling method | — | 2019-04-09 |
| 9499924 | Method for manufacturing silicon single crystal | Akihiro Kimura, Junya Tokue | 2016-11-22 |
| 9217208 | Apparatus for producing single crystal | Ryoji Hoshi | 2015-12-22 |
| 8764900 | Apparatus and method for producing single crystals | Masahiko Urano, Ryoji Hoshi | 2014-07-01 |
| 8268077 | Upper heater, single crystal production apparatus, and method for producing single crystal | — | 2012-09-18 |
| 7524744 | Method of producing SOI wafer and SOI wafer | Isao Yokokawa, Hiroji Aga, Kiyoshi Mitani | 2009-04-28 |
| 7357839 | SOI wafer and a method of producing the same | Hitoshi Tsunoda | 2008-04-15 |
| 6120749 | Silicon single crystal with no crystal defect in peripheral part of wafer and process for producing the same | Makoto Iida, Eiichi Iino, Masanori Kimura, Hirotoshi Yamagishi | 2000-09-19 |
| 5980630 | Manufacturing method of single crystal and apparatus of manufacturing the same | Eiichi Iino, Masanori Kimura, Hirotoshi Yamagishi | 1999-11-09 |
| 5938842 | Method for producing a single crystal using czochralski technique | Masahiro Sakurada, Tomohiko Oota, Masanori Kimura | 1999-08-17 |
| 5871583 | Apparatus for producing silicon single crystal | Izumi Fusegawa, Hirotoshi Yamagishi | 1999-02-16 |
| 5843229 | Crystal holding apparatus | Masanori Kimura, Eiichi Iino, Hirotoshi Yamagishi | 1998-12-01 |
| 5817171 | Apparatus and method for producing single crystal using Czochralski technique | Masahiro Sakurada, Tomohiko Oota, Masanori Kimura | 1998-10-06 |
| 5792255 | Manufacturing method of single crystal | Eiichi Iino, Masanori Kimura, Hirotoshi Yamagishi | 1998-08-11 |
| 5788718 | Apparatus and a method for growing a single crystal | Hirotoshi Yamagishi, Eiichi Iino, Masanori Kimura | 1998-08-04 |
| 5785758 | Single crystal growing apparatus | Hirotoshi Yamagishi, Masanori Kimura | 1998-07-28 |
| 5735951 | Single crystal pulling apparatus | Eiichi Iino, Masanori Kimura, Koji Mizuishi, Hirotoshi Yamagishi | 1998-04-07 |
| 5728211 | Silicon single crystal with low defect density and method of producing same | Kouji Kitagawa, Eiichi Iino, Masanori Kimura, Hirotoshi Yamagishi, Masahiro Sakurada | 1998-03-17 |
| 5720809 | Crucible for pulling silicon single crystal | Eiichi Iino, Izumi Fusegawa, Hirotoshi Yamagishi | 1998-02-24 |
| 5667584 | Method for the preparation of a single crystal of silicon with decreased crystal defects | Eiichi Iino, Masahiro Sakurada, Hirotoshi Yamagishi | 1997-09-16 |
| 5462010 | Apparatus for supplying granular raw material for a semiconductor single crystal pulling apparatus | Izumi Fusegawa, Hirotoshi Yamagishi, Koji Mizuishi, Katsuhiko Ogino | 1995-10-31 |
| 5373805 | Single crystal pulling apparatus | Izumi Fusegawa, Hirotoshi Yamagishi | 1994-12-20 |