Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–11 of 11 inventors

Rank Inventor Primary Company Patents
1 Jun Araki The University Of Tokyo 4
2 Ken Yoshioka Hitachi 2
2 Ikuo Yoshida Hitachi 2
2 Takeshi Ikemoto Kanebo, Limited 2
2 Junichi Hamada NS Sumikin Stainless 2
2 Shoji Ikuhara Hitachi 2
2 Kenichi Kuwabara Fujitsu Limited 2
#8 Saburou Kanai Hitachi 1
#8 Toshio Baba Nec 1
#8 Kenji IMAMOTO Hitachi 1
#8 Haruhiko Kajimura Sumitomo Metal Industries 1