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

William Spencer

SUSundstrand: 5 patents #99 of 697Top 15%
Rockford, IL: #295 of 1,291 inventorsTop 25%
Illinois: #17,877 of 84,256 inventorsTop 25%
Overall (All Time): #1,060,813 of 4,157,543Top 30%
5 Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5036448 DC to AC inverter and method for producing three phases from two input phases Joseph S. Breit 1991-07-30
4992904 Hybrid contactor for DC airframe power supply Joseph S. Breit 1991-02-12
4559486 Detector for shorted rotating diode of a brushless alternator Melvin C. Jackovich 1985-12-17
4528493 Detector for shorted rotating diode of a brushless alternator Melvin C. Jackovich 1985-07-09
4486801 Generator shorted diode protection system Melvin C. Jackovich, James B. Thom 1984-12-04