Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12286562 | Metal oxide particles containing titanium oxide coated with silicon dioxide-stannic oxide complex oxide | Yoshinari Koyama, Tomoki Furukawa | 2025-04-29 |
| 11634589 | Coating composition and optical member | Yoshinari Koyama, Tomoki Furukawa | 2023-04-25 |
| 9150421 | Silane surface-treated metal oxide fine particles and production method for same | Yoshinari Koyama, Tomoki Furukawa, Natsumi Tsuihiji | 2015-10-06 |
| 8193253 | Organosol of fluoride colloid particle and method for producing the same | Yoshinari Koyama, Osamu Fujimoto | 2012-06-05 |
| 8034846 | Method for producing modified zirconium oxide-tin oxide composite sol | Yoshinari Koyama | 2011-10-11 |
| 7563827 | Modified stannic oxide sol, stannic oxide-zirconium oxide composite sol, coating composition and optical element | Yoshinari Koyama | 2009-07-21 |
| 7556682 | Zirconium oxide-tin oxide composite sol, coating composition and optical member | Yoshinari Koyama | 2009-07-07 |
| 7476695 | Modified stannic oxide-zirconium oxide complex sol and method for preparing same | Yoshinari Koyama | 2009-01-13 |
| 6646015 | Process for producing diantimony pentoxide sol | Keitaro Suzuki, Yoshinari Koyama | 2003-11-11 |