You-Shan TSAI has been granted 3 US patents while listed as an inventor at Grape King Bio. The first was granted in 2023 and the most recent in December 2025. You-Shan TSAI ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list You-Shan TSAI in Taoyuan, TW.