Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12331247 | Silica nanoparticles for crude oil recovery using carbon dioxide, and crude oil recovery method | Takashi Hiraoka, Hideharu Yonebayashi, Yoshihiro Miyagawa, Masashi Abe | 2025-06-17 |
| 11834608 | Silica nanoparticles for crude oil recovery using carbon dioxide, and crude oil recovery method | Takashi Hiraoka, Hideharu Yonebayashi, Yoshihiro Miyagawa, Masashi Abe | 2023-12-05 |
| 9101894 | Surfactant for stabilizing water/supercritical carbon dioxide microemulsion | Kotaro KUDO, Masahiro Hida, Yasufumi Shikauchi | 2015-08-11 |
| 8815957 | Surfactant | Shuho Iwama, Masahiro Hida, Yasufumi Shikauchi | 2014-08-26 |