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

Franklin J. Cathell

MLMaxwell Laboratories: 1 patents #29 of 58Top 50%
QSQualidyne Systems: 1 patents #3 of 4Top 75%
SWSee Water: 1 patents #3 of 4Top 75%
San Diego, CA: #9,825 of 23,606 inventorsTop 45%
California: #149,087 of 386,348 inventorsTop 40%
Overall (All Time): #1,449,680 of 4,157,543Top 35%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10634133 Electronic systems for controlling submersible pumps Michael R. Johnson 2020-04-28
5121314 Bi-mode high voltage resonant power supply and method Bryan Strickland 1992-06-09
4201957 Power inverter having parallel switching elements 1980-05-06