Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Chao-Jen Chou

Overall (All Time): #3,868,084 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4986095 Retractable lock structure Teng-Yun Wang 1991-01-22