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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Dafan Liu — 3 Patents

Microsoft: 3 patents #13,486 of 40,388Top 35%
Beijing, CN: #8,405 of 27,914 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Dafan Liu has been granted 3 US patents while listed as an inventor at Microsoft. The first was granted in 2009 and the most recent in January 2021. Dafan Liu ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Dafan Liu in Beijing, CN.

Patents per Year

Patents granted per year, 2009 to 2021Bar chart with a peak of 1 patents in 2009.peak 12009: 1 patents20092017: 1 patents20172021: 1 patents2021

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10891343 Recommending contacts in a social network Hua Chen, Wei-Ying Ma 2021-01-12 $215,405,000
9626648 Recommending contacts in a social network Hua Chen, Wei-Ying Ma 2017-04-18 $38,106,000
7596597 Recommending contacts in a social network Hua Chen, Wei-Ying Ma 2009-09-29 $51,348,000