Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–25 of 25 inventors

Rank Inventor Primary Company Patents
1 Noriaki Nakagawa Nakagawa Sangyo Co. 4
2 Tomoyasu Fukui Brother Kogyo 3
3 Kazushige Ueda Nippon Mining & Metals Co. 2
3 Takanori Izumi Murata Machinery 2
3 Akira Sakoguchi Kabushiki Kaisha Imasen Denki Seisakusho 2
#6 Daisuke Katsuyama Murata Machinery 1
#6 Fumihiro Nonobe Brother Kogyo 1
#6 Yoshinori Miyaguchi Toyo Boseki Kabushiki Kaisha 1
#6 Yoshifumi Ito Daido Metal Company 1
#6 Kazuhiro Ishikawa Murata Machinery 1
#6 Keiichiro Kume Daido Metal Company 1
#6 Genshirou Ogawa 1
#6 Hideyuki Harada Murata Manufacturing Co. 1
#6 Kazumoto Imai Toyo Boseki Kabushiki Kaisha 1
#6 Toshiaki Sone Kabushiki Kaisha Imasen Denki Seisakusho 1
#6 Tomoyuki Nirasawa Daido Metal Company 1
#6 Yoshihiro Matsushita Panasonic 1
#6 Satoshi Kamide Murata Machinery 1
#6 Katsumi Matsuba Murata Machinery 1
#6 Kyoko Inagaki Toyo Boseki Kabushiki Kaisha 1
#6 Tadashi Nishi Toyobo Co. 1
#6 Shigeru Inami Daido Metal Company 1
#6 Hirokazu Ichioka Murata Machinery 1
#6 Noboru Mori Kabushiki Kaisha Sanshin Seisakusho 1
#6 Kouichi Saruwatari Daido Metal Company 1