Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Constance Liu — 2 Patents

Cupertino, CA: #4,084 of 6,989 inventorsTop 60%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Constance Liu has been granted 2 US patents. The first was granted in 2001 and the most recent in March 2002. Constance Liu ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Constance Liu in Cupertino, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6353893 Sleep mode indicator for a battery-operated device Christine Liu, Jonathan Liu 2002-03-05
6203167 Drawer light fixture for those having vision difficulties Christine Liu, Jonathan Liu 2001-03-20