RD

Ryan M. Duffek

Caterpillar: 6 patents #1,094 of 8,398Top 15%
📍 Dunlap, IL: #119 of 474 inventorsTop 30%
🗺 Illinois: #15,122 of 84,256 inventorsTop 20%
Overall (All Time): #861,969 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
8097055 System for treating exhaust gas Thomas V. Staley, Loran Hoffman, Richard A. Crandell 2012-01-17
8092563 System for treating exhaust gas Richard A. Crandell, Loran Hoffman, Thomas V. Staley 2012-01-10
8083822 System for treating exhaust gas Loran Hoffman, Richard A. Crandell, Thomas V. Staley 2011-12-27
D645882 Engine exhaust treatment device housing Thomas V. Staley, Richard A. Crandell 2011-09-27
D645477 Engine exhaust treatment device housing Thomas V. Staley, Richard A. Crandell 2011-09-20
D590419 Engine exhaust treatment device housing Thomas V. Staley, Richard A. Crandell 2009-04-14