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USPTO Patent Rankings Data through Sept 30, 2025
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Chih-Yao Chi — 1 Patent in 2021

DEDarfon Electronics: 1 patents #10 of 39Top 30%
Overall (2021): #503,748 of 548,734Top 95%
1 Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10937610 Keyboard keyswitches having adjustable tactile feedback members Yung-Chih Wang, Chia-Hung Liu, Yu-Chun Hsieh, Chen Yang 2021-03-02