DO

Dieter Oppen

HP Hooker Chemicals & Plastics: 1 patents #31 of 117Top 30%
OI Oxy Metal Industries: 1 patents #8 of 30Top 30%
Overall (All Time): #2,370,351 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4295899 Process for coating iron and steel — 1981-10-20
4264378 Chromium-free surface treatment Karl Lampatzer 1981-04-28