RE

Raymond J. Ehrig

AC Aristech Chemical: 1 patents #1 of 4Top 25%
📍 Pittsburgh, PA: #60 of 296 inventorsTop 25%
🗺 Pennsylvania: #852 of 3,759 inventorsTop 25%
Overall (1989): #67,913 of 140,708Top 50%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4824736 Gasoline tank of tin-free (electroplate chrome-chrome oxide coated) steel coated with a maleic anhydride modified polypropylene Richard C. Weil 1989-04-25