Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
AL

Alexander D. Liu — 5 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Gardena, CA: #55 of 346 inventorsTop 20%
California: #107,996 of 386,348 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Alexander D. Liu has been granted 5 US patents while listed as an inventor at Unknown. The first was granted in 2007 and the most recent in November 2020. Alexander D. Liu ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Alexander D. Liu in Gardena, CA, US.

Patents per Year

Patents granted per year, 2007 to 2020Bar chart with a peak of 2 patents in 2014.peak 22007: 1 patents20072012: 1 patents20122014: 2 patents20142020: 1 patents2020

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10844249 Stress tearable tape An-Hsia Liu, Victor Liu 2020-11-24
8814218 Sticker with security arrangement An-Hsia Liu, Wen-Shueh M. Liu, Victor Liu 2014-08-26
8672122 Carrying container folded from a die cut sheet material An-Hsia Liu, Victor Liu, Wen-Shueh M. Liu 2014-03-18
8312655 Sticker with security arrangement An-Hsia Liu, Wen-Shueh M. Liu, Victor Liu 2012-11-20
7258235 Fiberboard carton with secured die cut insert An-Hsia Liu, Victor Liu 2007-08-21