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USPTO Patent Rankings Data through Sept 30, 2025
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Ding-Kan Chang — 1 Patent

Overall (All Time): #3,401,441 of 4,157,543Top 85%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7298361 Non-contact electric inductance circuit for power source Rung-Tsung Lin 2007-11-20