HC

Harold H. Christhilf

WI Witco: 2 patents #46 of 201Top 25%
📍 Trainer, PA: #2 of 2 inventorsTop 100%
🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%
Overall (All Time): #2,335,571 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4729791 Corrosion-inhibiting coating compositions for metals Paul E. Laura, Paul W. Niemczura, Paul E. Morrison 1988-03-08
4631083 Pipe varnish compositions and use thereof Paul E. Morrison, Paul W. Niemczura 1986-12-23