DH

David Helfand

CI Ciba-Geigy: 1 patents #1,572 of 2,867Top 55%
📍 Yorktown Heights, NY: #633 of 858 inventorsTop 75%
🗺 New York: #67,335 of 115,490 inventorsTop 60%
Overall (All Time): #4,032,185 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4440914 Solid epoxy resin systems Ralph F. Sellers 1984-04-03