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

Donald A. Down

CTCooper Technologies: 3 patents #218 of 859Top 30%
Brookfield, WI: #260 of 745 inventorsTop 35%
Wisconsin: #13,258 of 40,088 inventorsTop 35%
Overall (All Time): #1,559,930 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7915766 Preventive maintenance tapping and duty cycle monitor for voltage regulator Augusto D. Hernandez, Fred J. Rapant, Richard John Kaluzny 2011-03-29
7482714 Preventive maintenance tapping and duty cycle monitor for voltage regulator Fred J. Rapant, Richard John Kaluzny, Augusto D. Hernandez 2009-01-27
7408275 Preventive maintenance tapping and duty cycle monitor for voltage regulator Augusto D. Hernandez, Fred J. Rapant, Richard John Kaluzny 2008-08-05