RH

Robert D. Herold

PO Ppg Industries Ohio: 21 patents #59 of 1,316Top 5%
PI Ppg Industries: 3 patents #352 of 1,216Top 30%
AR Arkema: 1 patents #227 of 443Top 55%
📍 Monroeville, PA: #20 of 710 inventorsTop 3%
🗺 Pennsylvania: #2,310 of 74,527 inventorsTop 4%
Overall (All Time): #152,265 of 4,157,543Top 4%
26
Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #TitleCo-InventorsDate
5708064 High refractive index photochromic ophthalmic article Charles R. Coleman, Christopher D. Selvig 1998-01-13