RK

Raphael O. Kollah

PI Ppg Industries: 2 patents #15 of 153Top 10%
📍 Wexford, PA: #2 of 17 inventorsTop 15%
🗺 Pennsylvania: #389 of 4,367 inventorsTop 9%
Overall (1997): #27,054 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5630922 Electrodepositable coating composition containing diorganotin dicarboxylates Venkatachalam Eswarakrishnan, Robert R. Zwack, Gregory J. McCollum, Steven R. Zawacky 1997-05-20
5600035 Positive photoactive compounds based on 2,6-dinitro benzyl groups and 2,5-dinitro benzyl groups Charles F. Kahle, II, Neil D. McMurdie, Daniel E. Rardon, Gregory J. McCollum 1997-02-04