Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Shu-Ching Chan

PTProdisc Technology: 1 patents #15 of 34Top 45%
Pingtung City, TW: #121 of 233 inventorsTop 55%
Overall (All Time): #3,399,486 of 4,157,543Top 85%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7287863 Light tunnel with gradient filter layer Nai-Yueh Liang, Wei-Chung Wang, Chong-Han Tsai, Ta-Kun Kung, Yen-Chun Chou 2007-10-30