CF

Changqing Feng

PL Petrochina Company Limited: 1 patents #264 of 890Top 30%
UC University Of Science And Technology Of China: 1 patents #55 of 276Top 20%
📍 Daguantang, CN: #139 of 484 inventorsTop 30%
Overall (All Time): #1,738,323 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12422577 Gas detector fabrication method, gas detector, and ray detection device Zhiyong Zhang, Sicheng Wen, Jianbei Liu, Ming SHAO, Yi Zhou 2025-09-23
11634961 Metal-based dissolvable ball seat, setting system and setting method Xiaowei Xue, Jianguo Yao, Zhiguo Wang, Guofu Ren, Xiangjun Hu +4 more 2023-04-25