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USPTO Patent Rankings Data through Sept 30, 2025
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Liqing Du — 1 Patent

Overall (All Time): #2,745,096 of 4,157,543Top 70%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11097709 Brake cylinder, brake clamp unit and rail vehicle Hongwen Han, Chunguang Bao, Junhua Zhu, Qingbing GOU, Zhuomin Mei 2021-08-24