DM

Delong Ma

PL Petrochina Company Limited: 1 patents #264 of 890Top 30%
Overall (All Time): #1,923,444 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10845495 Method and device of identifying fracture Chao Feng, Tuanyu Teng, Qingzhou Yao, HAN-BING ZHANG, Lu Yin +1 more 2020-11-24
10222343 Method and apparatus for testing residual stress in coatings Yiwang Bao, Detian Wan, Xiaogen Liu 2019-03-05