Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Chienfeng Chen — 1 Patent

UMUnited Microelectronics: 1 patents #2,686 of 4,560Top 60%
USUtek Semiconductor: 1 patents #3 of 26Top 15%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Chienfeng Chen has been granted 1 US patent while listed as an inventor at United Microelectronics. All of these patents were granted in 2001. Chienfeng Chen ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%).

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6315834 Method for removing extraneous matter by using fluorine-containing solution Ping-Chung Chung, Tsung-Lin Lu, Hunter Chung, Chin-Hsien Chen, Weng-Yi Chen +1 more 2001-11-13 $597,000