John J. Donofrio

AP Amchem Products: 2 patents #15 of 57Top 30%

📍 Ambler, PA: #164 of 341 inventorsTop 50%

🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%

Overall (All Time): #2,340,980 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4643778	Composition and process for treating steel	—	1987-02-17
4486241	Composition and process for treating steel	—	1984-12-04