Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Tsai — 2 Patents

SCSchering: 2 patents #1,083 of 2,442Top 45%
Hackettstown, NJ: #348 of 793 inventorsTop 45%
New Jersey: #30,063 of 69,400 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
David Tsai has been granted 2 US patents while listed as an inventor at Schering. The first was granted in 2005 and the most recent in May 2009. David Tsai ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David Tsai in Hackettstown, NJ, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7534884 Preparation of pharmaceutical salts Dinesh Gala, Andrew Goodman, Gary M. Lee, Hongbiao Liao, Martin L. Schwartz +2 more 2009-05-19 $137,836,000
6943251 Preparation of salts of 4-[4-[(1R)-[4-(trifluoromethyl)phenyl]-2-methoxyethyl]-(3S)-methyl-1-piperazinyl]-4-methyl-1-[(4,6-dimethyl-5-pyrimidinyl)carbonyl] Dinesh Gala, Andrew Goodman, Gary M. Lee, Hongbiao Liao, Martin L. Schwartz +2 more 2005-09-13 $74,872,000