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

Thomas Kaufman — 3 Patents

RARayovac: 1 patents #78 of 170Top 50%
RORovcal: 1 patents #45 of 92Top 50%
Middleton, WI: #206 of 564 inventorsTop 40%
Wisconsin: #13,258 of 40,088 inventorsTop 35%
Overall (All Time): #1,566,152 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7651814 Electrochemical cell having improved radial seal Thomas P. Anderson, William C. Bushong, Denis D. Carpenter, Aaron J. Rositch, Marc Syvertsen +1 more 2010-01-26
7288920 Method and apparatus for regulating charging of electrochemical cells William C. Bushong, Paul Cheeseman, Michael J. Root, Aaron J. Rositch, Marc Syvertsen +1 more 2007-10-30
6878481 Method and apparatus for regulating charging of electrochemical cells William Bushong, Cheeseman Paul, Michael J. Root, Aaron J. Rositch, Marc Syvertsen +1 more 2005-04-12