Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12306578 | Hydrophobic silica powder and toner resin particle | Yuma Negishi, Yasuhiro Fuma | 2025-05-20 |
| 11691885 | Hydrophobic silica powder | Hirokazu YOKOTA, Kenichi Takeuchi, Yuma Negishi, Tomoko Kiseki, Munenori Komoto | 2023-07-04 |