DZ

Duanguang Zhang

📍 Shandong, CN: #74 of 611 inventorsTop 15%
Overall (2025): #129,022 of 469,880Top 30%
2
Patents 2025

Issued Patents 2025

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12371953 Automatic small repair operation system for oil field Xiqing Zhang, Junfang Shen, Qiuling Wang, Hailong Lv, Jiaojiao Zhang +3 more 2025-07-29
12234692 Automated apparatus for oil field drilling and workover operations Xiqing Zhang, Junfang Shen, Jidi Yu, Qiuling Wang, Ye-Ran Ji +5 more 2025-02-25