Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
HC

Hsiao-yun Emma Chang

Overall (All Time): #3,513,766 of 4,157,543Top 85%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6575943 Prewarning device for instillation of medical liquid 2003-06-10