QM

Qingming Ma

CC China Petroleum & Chemical: 2 patents #18 of 397Top 5%
Overall (2025): #94,065 of 469,880Top 25%
2
Patents 2025

Issued Patents 2025

Patent #TitleCo-InventorsDate
12366155 Mud pulse generation system based on two-way communication Baizhi Wu, Wei-Ren Chen, Ningning YANG, Shugang Hou, Hongbing Xiao +3 more 2025-07-22
12252986 Steerable drilling device Jieran Zhu, Ningning YANG, Guangquan Li, Yufeng Li, Nan-Chun Lin +3 more 2025-03-18