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

Da-Chung Chen

Overall (All Time): #2,292,114 of 4,157,543Top 60%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5364103 Sports equipment for golf-like game Mao-Lan Chen 1994-11-15
D344116 Club Ta-Cheng Chen 1994-02-08