KS

Keiji Sakai

UN Unitika: 2 patents #136 of 620Top 25%
OC Osaka Gas Chemicals Co.: 1 patents #9 of 38Top 25%
Overall (All Time): #1,703,112 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12258284 Activated carbon Tomoyasu Nakano, Hirokazu Shimizu 2025-03-25
11873235 Activated carbon Tomoyasu Nakano, Hirokazu Shimizu, Akinori Kawachi 2024-01-16