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USPTO Patent Rankings Data through Sept 30, 2025
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Ruoyu Fei — 1 Patent in 2021

Amazon: 1 patents #1,401 of 4,535Top 35%
Kirkland, WA: #268 of 696 inventorsTop 40%
Washington: #4,694 of 13,672 inventorsTop 35%
Overall (2021): #279,962 of 548,734Top 55%
1 Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10972556 Location-based functionality for voice-capturing devices Yu-Hsiang Cheng, Jingyu Ji, Milo Oostergo, Aapo Juhani Laitinen 2021-04-06