Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Van I. W. Stuart — 4 Patents

EAE.I. Du Pont De Nemours And: 4 patents #2,693 of 12,129Top 25%
Missouri City, TX: #307 of 1,012 inventorsTop 35%
Texas: #33,915 of 125,132 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Van I. W. Stuart has been granted 4 US patents. The first was granted in 1987 and the most recent in August 1990. Van I. W. Stuart ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Van I. W. Stuart in Missouri City, TX, US.

Patents per Year

Patents granted per year, 1987 to 1990Bar chart with a peak of 2 patents in 1987.peak 21987: 2 patents19871988: 1 patents19881990: 1 patents1990

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4946817 Latent catalysts for epoxy-containing compounds James L. Bertram, Louis L. Walker 1990-08-07 $2,737,000
4725652 Latent catalysts for epoxy reactions James L. Bertram, Louis L. Walker 1988-02-16 $9,242,000
4704431 Blends of polypropylene and vinylaromatic/.alpha.-methylstyrene copolymers Duane B. Priddy 1987-11-03 $6,200,000
4691021 Aminoalkyl hydantoins and glycidyl derivatives thereof Pen-Chung Wang, Ronald L. Yates, Steven P. Crain 1987-09-01 $6,415,000