Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12252803 | N-type silicon single crystal production method, n-type silicon single crystal ingot, silicon wafer, and epitaxial silicon wafer | Koichi Maegawa, Yasuhito Narushima, Fukuo Ogawa, Ayumi Kihara | 2025-03-18 |
| 12116691 | Method for producing silicon single crystal | Koichi Maegawa | 2024-10-15 |
| 11814745 | Method for producing silicon single crystal | Koichi Maegawa | 2023-11-14 |
| 11702760 | N-type silicon single crystal production method, n-type silicon single crystal ingot, silicon wafer, and epitaxial silicon wafer | Koichi Maegawa, Yasuhito Narushima, Fukuo Ogawa, Ayumi Kihara | 2023-07-18 |
| 11377755 | N-type silicon single crystal production method, n-type silicon single crystal ingot, silicon wafer, and epitaxial silicon wafer | Koichi Maegawa, Yasuhito Narushima, Fukuo Ogawa, Yuuji Tsutsumi | 2022-07-05 |
| 11242617 | Method for producing silicon single crystal | Koichi Maegawa, Yasuhito Narushima, Fukuo Ogawa | 2022-02-08 |
| 10916425 | Method for manufacturing silicon single crystal, flow straightening member, and single crystal pulling device | Fukuo Ogawa, Yasuhito Narushima, Koichi Maegawa | 2021-02-09 |
| 10661642 | Back window part seal structure for vehicle with retractable roof | Koji Sawahata, Akio Yamada, Masaki Oda, Takashi Senoo, Miwa Shinohara +1 more | 2020-05-26 |
| 10525806 | Roof structure of automotive vehicle | Koji Sawahata | 2020-01-07 |
| 10183561 | Roof structure of automotive vehicle | Kouichi Matsumoto, Koji Sawahata | 2019-01-22 |