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

Ann Hsu — 26 Patents

ILImpax Laboratories: 25 patents #1 of 12Top 9%
Hayward, CA: #50 of 1,120 inventorsTop 5%
California: #20,975 of 386,348 inventorsTop 6%
Overall (All Time): #150,017 of 4,157,543Top 4%
26 Patents All Time
Ann Hsu has been granted 26 US patents while listed as an inventor at Impax Laboratories. The first was granted in 2006 and the most recent in December 2025. Ann Hsu ranks #150,017 of 4,157,543 US inventors in our database (top 3.6%). Patent records list Ann Hsu in Hayward, CA, US.

Patents per Year

Patents granted per year, 2006 to 2025Bar chart with a peak of 4 patents in 2024.peak 42006: 1 patents20062011: 1 patents2013: 3 patents20132015: 2 patents2016: 1 patents20162017: 1 patents2018: 2 patents20182019: 1 patents2020: 1 patents20202021: 2 patents2022: 1 patents20222023: 2 patents2024: 4 patents20242025: 4 patents2025

Issued Patents All Time

Showing 1–25 of 26 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12491164 Muco-adhesive, controlled release formulation of levodopa and/or esters of levodopa and uses thereof Libo Dong, Amy Ding, Suneel Gupta 2025-12-09
12403099 Muco-adhesive, controlled release formulation of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2025-09-02
12303605 Muco-adhesive, controlled release formulation of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2025-05-20
12274793 Muco-adhesive, controlled release formulation of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2025-04-15
12178918 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2024-12-31 $10,611,000
12178919 Muco-adhesive, controlled release formulation of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2024-12-31 $10,611,000
12128141 Muco-adhesive, controlled release formulation of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2024-10-29 $25,421,000
12064521 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2024-08-20 $29,324,000
11666538 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2023-06-06 $5,609,000
11622941 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2023-04-11 $2,918,000
11357733 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2022-06-14 $4,903,000
10987313 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2021-04-27 $13,842,000
10973769 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2021-04-13 $14,335,000
10688058 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2020-06-23 $19,066,000
10292935 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2019-05-21 $11,155,000
10098845 Muco-adhesive, controlled release formulations of levodopa and/or esters of levodopa and uses thereof Liang Dong, Amy Ding, Suneel Gupta 2018-10-16 $23,834,000
9901640 Controlled release formulations of levodopa and uses thereof Jim H. Kou, Laman Alani 2018-02-27 $28,837,000
9533046 Controlled release formulations of levodopa and uses thereof Jim H. Kou, Laman Alani 2017-01-03 $13,464,000
9463246 Controlled release formulations of levodopa and uses thereof Jim H. Kou, Laman Alani 2016-10-11 $18,138,000
9089608 Controlled release formulations of levodopa and uses thereof Jim H. Kou, Laman Alani 2015-07-28 $14,110,000
9089607 Controlled release formulations of levodopa and uses thereof Jim H. Kou, Laman Alani 2015-07-28 $14,110,000
8557283 Controlled release formulations of levodopa and uses thereof Jim H. Kou, Laman Alani 2013-10-15 $13,213,000
8454998 Controlled release formulations of levodopa and uses thereof Jim H. Kou, Laman Alani 2013-06-04 $13,819,000
8377474 Controlled release formulations of levodopa and uses thereof Jim H. Kou, Laman Alani 2013-02-19 $10,710,000
8007827 Pharmaceutical dosage forms having immediate release and/or controlled release properties Chien-Hsuan Han, Larry Hsu 2011-08-30 $12,129,000