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USPTO Patent Rankings Data through Sept 30, 2025
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Yung-Fu Chang — 2 Patents in 2021

EPEpistar: 2 patents #21 of 172Top 15%
Tempe, AZ: #49 of 361 inventorsTop 15%
Arizona: #672 of 4,087 inventorsTop 20%
Overall (2021): #94,907 of 548,734Top 20%
2 Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11158757 Optical sensing device and optical sensing system thereof comprising a light receiving device capable of receiving a first received wavelength having a largest external quantum efficiency Yi-Chieh Lin, Shiuan-Leh Lin, Shih-Chang Lee, Chia-Liang Hsu, Yi-Han Hsiao +3 more 2021-10-26
11121285 Semiconductor device Hui-Fang Kao, Yi-Tang Lai, Shih-Chang Lee, Wen-Luh Liao, Mei-Chun Liu +2 more 2021-09-14