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

Clifton A. Piersbacher — 2 Patents

The Boeing: 2 patents #5,172 of 15,756Top 35%
Seattle, WA: #10,473 of 21,776 inventorsTop 50%
Washington: #35,300 of 76,902 inventorsTop 50%
Overall (All Time): #2,246,240 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5868359 Autopilot automatic disconnect system for fly-by-wire aircraft Daniel H. Cartmell, David B. Borgens, Henning Buus, Keith S. Duffy, Mark E. Gast +2 more 1999-02-09
5797564 System for backdrive of flight deck controls during autopilot operation Daniel H. Cartmell, David B. Borgens, Henning Buus, Keith S. Duffy, Mark E. Gast +2 more 1998-08-25