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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 #	Title	Co-Inventors	Date
9677238	Pneumatic floating fender with a plastic protection cover	William W. Lee, Yu Guangfeng, Zhao Dianhua	2017-06-13

Duan Qingling — 1 Patent

Issued Patents All Time

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