HF

Helmut Franz

PI Ppg Industries: 3 patents #14 of 184Top 8%
📍 Pittsburgh, PA: #13 of 224 inventorsTop 6%
🗺 Pennsylvania: #88 of 2,652 inventorsTop 4%
Overall (1982): #4,851 of 81,411Top 6%
3
Patents 1982

Issued Patents 1982

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4360544 Organotin surface treatment and interleaving material for glass sheets Paul F. Duffer, Joseph D. Kelly 1982-11-23
4332861 Plastic surface treatment James H. Hanlon, Lloyd G. Shick 1982-06-01
4311764 Polyurethane surface treatment and resulting monomolecular layered article 1982-01-19