Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
BU

Buncho — 12 Patents

Rank (All Time): #47,004 of 106,120Top 45%
9 inventors
12 Patents All Time

Top Inventors at Buncho All Time

Showing 1–9 of 9 inventors

RankNamePatents
1 Koji Seki 7
2 Yoshimi Kano 4
3 Kenkichi Yoshida 2
3 Masamichi Yoshida 2
3 Yosimi Kano 2
#6 Jiro Usui 1
#6 Atsushi Kaneko 1
#6 Jung Han Sin 1
#6 Ryoichi Seki 1