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USPTO Patent Rankings Data through Sept 30, 2025
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Tongfei Chen

AMAmazon: 1 patents #1,401 of 4,535Top 35%
Baltimore, MD: #165 of 583 inventorsTop 30%
Maryland: #1,105 of 3,967 inventorsTop 30%
Overall (2021): #230,126 of 548,734Top 45%
1 Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10923111 Speech detection and speech recognition Xing Fan, I-Fan Chen, Yuzong Liu, Bjorn Hoffmeister, Yiming Wang 2021-02-16

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