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USPTO Patent Rankings Data through Dec 31, 2025
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Duan Qingling — 1 Patent

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Jinan, CN: #386 of 884 inventorsTop 45%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Duan Qingling has been granted 1 US patent while listed as an inventor at Unknown. All of these patents were granted in 2017. Duan Qingling ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Duan Qingling in Jinan, CN.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9677238 Pneumatic floating fender with a plastic protection cover William W. Lee, Yu Guangfeng, Zhao Dianhua 2017-06-13

Frequent Collaborators

Yu Guangfeng1 shared
William W. Lee1 shared
Zhao Dianhua1 shared

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