Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
RD

Robert D. Darnell — 5 Patents

Motorola: 5 patents #2,124 of 12,470Top 20%
Phoenix, AZ: #1,297 of 6,660 inventorsTop 20%
Arizona: #6,882 of 32,909 inventorsTop 25%
Overall (All Time): #1,066,292 of 4,157,543Top 30%
5 Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4480989 Method of cooling a flange and coupling Carl A. Goetz, William M. Ingle 1984-11-06
4416913 Ascending differential silicon harvesting means and method William M. Ingle, Stephen W. Thompson 1983-11-22
4411619 Flange and coupling cooling means and method Carl A. Goetz, William M. Ingle 1983-10-25
4409195 Purification of silicon source materials William M. Ingle 1983-10-11
4374110 Purification of silicon source materials William M. Ingle 1983-02-15