DF

David J. Frank

IBM: 1 patents #253 of 1,444Top 20%
📍 Yorktown Heights, NY: #11 of 39 inventorsTop 30%
🗺 New York: #1,258 of 5,342 inventorsTop 25%
Overall (1989): #123,252 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4821082 Heterojunction bipolar transistor with substantially aligned energy levels Ronald Franklin Marks 1989-04-11