Showing 1–10 of 10 inventors

Rank Inventor Primary Company Patents
1 Jigang Liu Empire Technology Development 4
2 Yonglin Zhang China National Petroleum 3
3 Guoxin He China National Petroleum 2
3 Defu Cai China National Petroleum 2
#5 Zailu Zhang China National Petroleum 1
#5 Wang Shaobin 1
#5 Jinliang Xing 1
#5 Sihe Zhang 1
#5 Jingping Xiao China National Petroleum 1
#5 Peichang Li China National Petroleum 1