RH

Roy R. Hannum

UC Union Carbide: 1 patents #697 of 1,402Top 50%
📍 Long Bottom, OH: #1 of 1 inventorsTop 100%
🗺 Ohio: #42,657 of 73,341 inventorsTop 60%
Overall (All Time): #4,054,700 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4394161 Method of producing a vanadium- and nitrogen-containing material for use as an addition to steel — 1983-07-19