RL

Ralph W. Leonard

US United States Steel: 2 patents #44 of 309Top 15%
📍 Pittsburgh, PA: #3,179 of 7,570 inventorsTop 45%
🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%
Overall (All Time): #2,358,639 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4466999 Atmospheric gas practice for hot-dip coating of metals — 1984-08-21
4456663 Hot-dip aluminum-zinc coating method and product — 1984-06-26