Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12258674 | Production apparatus for metal oxide single crystal and production method for metal oxide single crystal | Keigo Hoshikawa, Takumi Kobayashi | 2025-03-25 |
| 11795568 | Production apparatus for gallium oxide crystal capable of preventing harmful substances formed in furnace from being diffused to surroundings of furnace | Keigo Hoshikawa, Takumi Kobayashi, Yoshio Otsuka, Etsuko Ohba | 2023-10-24 |
| 11674239 | Gallium oxide crystal manufacturing device | Keigo Hoshikawa, Takumi Kobayashi, Yoshio Otsuka | 2023-06-13 |
| 6451108 | Method for manufacturing dislocation-free silicon single crystal | Keigo Hoshikawa, Xinming Huang, Tatsuo Fukami | 2002-09-17 |