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

James Simpson — 3 Patents

PLPearson Engineering Limited: 1 patents #4 of 9Top 45%
Xerox: 1 patents #5,237 of 8,622Top 65%
Reading, PA: #131 of 514 inventorsTop 30%
Pennsylvania: #23,787 of 74,527 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
James Simpson has been granted 3 US patents while listed as an inventor at Pearson Engineering Limited. The first was granted in 1994 and the most recent in November 2014. James Simpson ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list James Simpson in Reading, PA, US.

Patents per Year

Patents granted per year, 1994 to 2014Bar chart with a peak of 1 patents in 1994.peak 11994: 1 patents19942002: 1 patents20022014: 1 patents2014

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8887827 Mounting assembly for mounting implement to a vehicle 2014-11-18
6474930 Hand truck for moving 3 point hitch equipment 2002-11-05
5332642 Vacuum assisted dispersant reduction system Robert M. Simms, Henry R. Till, Robert K. Waring, John F. Gardner, Tab A. Tress 1994-07-26 $4,594,000