Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert E. Hruska — 3 Patents

Abbott: 3 patents #2,262 of 5,509Top 45%
Libertyville, IL: #366 of 868 inventorsTop 45%
Illinois: #26,899 of 84,256 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Robert E. Hruska has been granted 3 US patents while listed as an inventor at Abbott. The first was granted in 1994 and the most recent in November 1995. Robert E. Hruska ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Robert E. Hruska in Libertyville, IL, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5464767 Reagents and methods for the quantification of total doxepins in biological fluids Maciej Adamczyk, Jeffrey R. Fishpaugh, Donald Johnson 1995-11-07 $40,924,000
5413911 Determination of tricyclic antidepressant drugs in the presence of interfering substances Maciej Adamczyk, Jeffrey R. Fishpaugh, Charles A. Harrington, Daryl E. Hartter 1995-05-09 $169,437,000
5332661 Reagents and methods for the quantification of total doxepins in biological fluids Maciej Adamczyk, Jeffrey R. Fishpaugh, Donald Johnson 1994-07-26 $42,611,000