PA

Ponnaiyan Ayyappan

JD John Deere: 2 patents #2,042 of 5,518Top 40%
📍 Cedar Falls, IA: #204 of 441 inventorsTop 50%
🗺 Iowa: #6,094 of 15,303 inventorsTop 40%
Overall (All Time): #2,023,230 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8999277 Diesel exhaust fluid formulation that reduces urea deposits in exhaust systems Danan Dou, Thomas M. Harris 2015-04-07
8961818 Diesel exhaust fluid formulation that reduces urea deposits in exhaust systems Danan Dou, Thomas M. Harris 2015-02-24