Showing 1–6 of 6 inventors

Rank Inventor Primary Company Patents
1 Defu Cai China National Petroleum 1
1 Zailu Zhang China National Petroleum 1
1 Guoxin He China National Petroleum 1
1 Jingping Xiao China National Petroleum 1
1 Peichang Li China National Petroleum 1
1 Yonglin Zhang China National Petroleum 1