Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Changfei Yan — 1 Patent in 2021

KLKla: 1 patents #57 of 232Top 25%
Overall (2021): #493,109 of 548,734Top 90%
1 Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11043239 Magneto-optic Kerr effect metrology systems Jun Wang, Yaolei Zheng, Chunxia Li, Lansheng Dong, Yang Zhou +7 more 2021-06-22