DD

Dongxia Duan

📍 Qingdao, CN: #112 of 400 inventorsTop 30%
Overall (2021): #471,981 of 548,734Top 90%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10940930 Online antifouling ship ballast water treatment system and ship ballast water treatment method Guangzhou Liu, Ping Yao 2021-03-09