QY

Qingchun Yuan

HA Hilti Aktiengesellschaft: 1 patents #789 of 1,466Top 55%
Overall (All Time): #3,299,370 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7776955 Polyurethane-graphite oxide composite material, method for its preparation and its use as a flame retardant and as a fire-proof seal Arne Reinheimer, Antje Wenzel, Fengge Gao 2010-08-17