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

Gradco/Dendoki — 19 Patents

Rank (All Time): #31,620 of 106,127Top 30%
4 inventors
19 Patents All Time

Top Inventors at Gradco/Dendoki All Time

Showing 1–4 of 4 inventors

RankNamePatents
1 John C. Hamma 12
2 R. Clark DuBois 11
3 Frederick J. Lawrence 7
#4 R. Clark Du Bois 1