US

Ullrich Stark

EA E.I. Du Pont De Nemours And: 3 patents #2,229 of 8,010Top 30%
Overall (All Time): #1,669,659 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4802330 Combined carpet yarns by open end rotor spinning Paul W. Yngve, Peter Artzt, Gerhard Egbers, Heinz Muller 1989-02-07
4788817 Automatic piecing of combination open end rotor spun yarn Peter Artzt, Gerhard Egbers, Heinz Muller 1988-12-06
4729214 Combined carpet yarns by open end rotor spinning Paul W. Yngve, Peter Artzt, Gerhard Egbers, Heinz Muller 1988-03-08