QH

Qunai Hu

CC China Petroleum & Chemical: 1 patents #836 of 1,719Top 50%
SE Sinopec Research Institute Of Petroleum Engineering: 1 patents #21 of 55Top 40%
Overall (All Time): #2,711,644 of 4,157,543Top 70%
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10927612 Downhole auxiliary drilling apparatus Yijin Zeng, Chenxi Zhao, Xiaojie Cui, Jianjun Zhao, Lanrong Ma +3 more 2021-02-23