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USPTO Patent Rankings Data through Sept 30, 2025
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Chen-Kai Chang

Tainan, TW: #2,725 of 4,566 inventorsTop 60%
Overall (All Time): #2,906,749 of 4,157,543Top 70%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10064906 Method of preparing fermented crude extract having angiotensin converting enzyme inhibiting activity Shu Chen Wang, Pin-Der Duh, Shih-Ying Chen, Jung Tsai Chen, Chih-Kuang Chiu 2018-09-04