Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
RF

Roy Christopher Fonseca

PSProgress Rail Services: 4 patents #13 of 125Top 15%
Caterpillar: 2 patents #2,982 of 8,398Top 40%
East Peoria, IL: #59 of 393 inventorsTop 20%
Illinois: #15,122 of 84,256 inventorsTop 20%
Overall (All Time): #849,922 of 4,157,543Top 25%
6 Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
9415781 Dual engine locomotive W. Jack Hardin, Walter E. Earleson 2016-08-16
8319356 System for starting power systems with multiple generator units 2012-11-27
7952306 Power system with multiple generator units Jeffrey Holt Wright 2011-05-31
7893636 Mobile machine with one or more electric propulsion motors Kevin A. Lantz, Jeffrey Holt Wright 2011-02-22
7876061 Power system with multiple generator units Jeffrey Holt Wright, Andrew William Black 2011-01-25
7295098 Systems and methods for providing theft protection in a machine Edward H. Betts, Jr., Timothy Booth, Mark J. Hilbert, Daniel Douglas Swords, Nathan Ralph Taylor +1 more 2007-11-13