WF

William J. Ferrell

ST Stepan: 1 patents #1 of 4Top 25%
📍 Des Plaines, IL: #9 of 50 inventorsTop 20%
🗺 Illinois: #802 of 3,813 inventorsTop 25%
Overall (1989): #44,362 of 140,708Top 35%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4857305 N-phenylphthalisoimides as ultraviolet radiation absorbers Randal J. Bernhardt 1989-08-15