JK

Johannes Evert Aloisius Koppen

EA E.I. Du Pont De Nemours And: 2 patents #2,942 of 8,010Top 40%
📍 Dordrecht, NL: #47 of 163 inventorsTop 30%
Overall (All Time): #2,235,302 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6031039 Anti-static composition 2000-02-29
4398676 Transfer tail winding device for tandem windups Samuel E. Workman 1983-08-16