Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–23 of 23 inventors

Rank Inventor Primary Company Patents
1 Yukiko Nakaya Brother Kogyo 3
1 Takahiro Miwa Brother Kogyo 3
3 Hiroki Tazawa Yamazaki Mazak 2
3 Tomohiro Wakazono Ngk Spark Plug Co. 2
3 Toshio Tsubakida Valeo Thermal Systems Japan 2
3 Wataru Hasegawa Brother Kogyo 2
3 Masami Hasegawa Ngk Spark Plug Co. 2
#8 Kiyoyuki Uchida Toyota 1
#8 Kazuaki Ishihara National University Corporation Nagoya University 1
#8 Yutaka Ichihara Nikon 1
#8 Takeo Iijima Diesel Kiki Co. 1
#8 Hiroshi Tabeta Hitachi Construction Machinery Co. 1
#8 Yoshihiro Sekiya Valeo Thermal Systems Japan 1
#8 Akihito Kobayashi Brother Kogyo 1
#8 Tadakazu Ishiwata Oji Holdings 1
#8 Muneo Sakurada Zexel Gmbh 1
#8 Katsumi Iida Diesel Kiki Co. 1
#8 Kazushi Shumiya Brother Kogyo 1
#8 Daisuke Kawase Denso Wave Incorporated 1
#8 Shoichi Fukuda Mani 1
#8 Toshiichi Ikami Ngk Insulators 1
#8 Jaesook Kim Daifuku Co. 1
#8 Takeo MIZUI Ngk Spark Plug Co. 1