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

John T. C. Kan

UNUnknown: 2 patents #12,644 of 83,584Top 20%
HEHein-Werner: 1 patents #13 of 27Top 50%
Chicago, IL: #3,897 of 13,327 inventorsTop 30%
Illinois: #26,653 of 84,256 inventorsTop 35%
Overall (All Time): #1,596,377 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7147972 Method and apparatus for achieving prolonged battery life Johan Fitter, Robert T. Morris, Richard E. Belmont 2006-12-12
6635387 Method and apparatus for achieving prolonged battery life Johan Fitter, Robert T. Morris, Richard E. Belmont 2003-10-21
5168205 Method and apparatus for charging a battery in high amp and automatic charging modes John F. Kan, Joseph P. Habermann 1992-12-01