DF

David A. Frankel

SI Segan Industries: 2 patents #2 of 2Top 100%
📍 Palo Alto, CA: #5,719 of 9,675 inventorsTop 60%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,219,153 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6465791 Integrating ultraviolet exposure detection devices Hans O. Ribi 2002-10-15
6046455 Integrating ultraviolet exposure detection devices Hans O. Ribi 2000-04-04