Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11885038 | Method of estimating convection pattern of silicon melt, method of estimating oxygen concentration of silicon single crystal, method of manufacturing silicon single crystal, and raising device of silicon single crystal | Ryusuke Yokoyama, Toshiyuki Fujiwara, Toshiaki Ono | 2024-01-30 |
| 11781242 | Method for controlling convection pattern of silicon melt, method for producing silicon single crystals, and device for pulling silicon single crystals | Hideki Sakamoto, Ryusuke Yokoyama, Naoki Matsushima | 2023-10-10 |
| 11441238 | Silicon monocrystal manufacturing method and silicon monocrystal pulling device | Ryusuke Yokoyama, Hideki Sakamoto | 2022-09-13 |
| 11261540 | Method of controlling convection patterns of silicon melt and method of manufacturing silicon single crystal | Naoki Matsushima, Ryusuke Yokoyama, Hideki Sakamoto | 2022-03-01 |
| 11186921 | Method for controlling convection pattern of silicon melt and method for producing monocrystalline silicon | Ryusuke Yokoyama | 2021-11-30 |
| 11078595 | Method of producing silicon single crystal ingot and silicon single crystal ingot | Masataka Hourai, Toshiaki Ono, Toshiyuki Fujiwara | 2021-08-03 |
| 10858753 | Method and apparatus for manufacturing silicon single crystal | Ryusuke Yokoyama, Mitsuaki Hayashi | 2020-12-08 |
| 10415150 | Apparatus for manufacturing silicon single crystal and melt inlet pipe of the same | Mitsuaki Hayashi, Ippei Shimozaki | 2019-09-17 |
| 8758505 | Silicon wafer and method for manufacturing the same | Toshiaki Ono, Masataka Hourai | 2014-06-24 |
| 8617311 | Silicon single crystal wafer for IGBT and method for manufacturing silicon single crystal wafer for IGBT | Toshiaki Ono, Shigeru Umeno, Masataka Hourai | 2013-12-31 |
| 7824493 | Silicon wafer and method for manufacturing the same | Toshiaki Ono, Masataka Hourai | 2010-11-02 |
| 7790573 | Process for producing SOI substrate and process for regeneration of layer transferred wafer in the production | Akihiko Endo, Toshiaki Ono | 2010-09-07 |
| 7704318 | Silicon wafer, SOI substrate, method for growing silicon single crystal, method for manufacturing silicon wafer, and method for manufacturing SOI substrate | Masataka Hourai, Toshiaki Ono, Tadami Tanaka | 2010-04-27 |
| 7700394 | Method for manufacturing silicon wafer method | Shinsuke Sadamitsu, Masanori Akatsuka, Masataka Hourai | 2010-04-20 |
| 7637997 | Silicon wafer, method for producing silicon wafer and method for growing silicon single crystal | Toshiaki Ono, Masataka Hourai | 2009-12-29 |
| 7628854 | Process for producing silicon single crystal | Toshiaki Ono, Takayuki Kubo, Akira Higuchi, Ken Nakajima | 2009-12-08 |
| 7435294 | Method for manufacturing silicon single crystal, and silicon wafer | Toshiaki Ono, Masataka Hourai | 2008-10-14 |
| 7384480 | Apparatus for manufacturing semiconductor single crystal | Toshiaki Ono, Masataka Hourai | 2008-06-10 |
| 7374741 | Method for growing silicon single crystal and silicon wafer | Toshiaki Ono, Masataka Hourai | 2008-05-20 |
| 7364618 | Silicon wafer, method for manufacturing the same and method for growing silicon single crystals | Masataka Hourai, Toshiaki Ono | 2008-04-29 |
| 7320731 | Process for growing silicon single crystal and process for producing silicon wafer | Toshiaki Ono, Masataka Hourai | 2008-01-22 |
| 7306676 | Apparatus for manufacturing semiconductor single crystal | Toshiaki Ono, Masataka Hourai | 2007-12-11 |
| 7300517 | Manufacturing method of hydrogen-doped silicon single crystal | Masataka Hourai | 2007-11-27 |