HH

Howard L. Harwell

Air Products And Chemicals: 2 patents #793 of 1,997Top 40%
📍 Emmaus, PA: #179 of 365 inventorsTop 50%
🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%
Overall (All Time): #2,347,698 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4582938 Alkyl polyamine ethers as catalysts for isocyanate reactions — 1986-04-15
4436842 Alkyl polyamine ethers as catalysts for isocyanate reactions — 1984-03-13