Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Chang Yu — 2 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%
Greenville, NC: #131 of 364 inventorsTop 40%
North Carolina: #18,944 of 45,564 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Chang Yu has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 2010 and the most recent in September 2021. Chang Yu ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Chang Yu in Greenville, NC, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D930307 Cleansing pad Hye Jeong Yu 2021-09-07
7722187 Fly-wing rotating lens eyeglasses 2010-05-25