Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Mito, JP ranks #1,645 worldwide for total patents filed in 2017, with 80 patents from 39 inventors. Leading employers of inventors based in Mito, JP include Shimadzu, Hitachi, Mitsubishi Hitachi Power Systems.

Showing 1–39 of 39 inventors

Rank Inventor Primary Company Patents
1 Masaki Kanai Shimadzu 7
2 Ryutaro Kikuchi Hitachi 6
2 Yasuo Takahashi Mitsubishi Hitachi Power Systems 6
2 Masahide Hayashi Hitachi Automotive Systems 6
#5 Akira Hamamatsu Hitachi High-Technologies 5
#6 Makoto Nagase Seiko Epson 4
#6 Naofumi Chiwata Hitachi 4
#8 Takuro Tsunaki Hitachi Automotive Systems 3
#8 Kumiko Kamihara Hitachi High-Technologies 3
#10 Ryouhei Nakao Hitachi Automotive Systems 2
#10 Yoshiyuki Shoji Hitachi High-Technologies 2
#10 Hirotaka Ono NTT 2
#10 Hideaki KIDO Renesas Electronics 2
#10 Muneo Maeshima Hitachi 2
#10 Keisuke Fujito Hitachi 2
#16 So OGUCHI Hitachi High-Technologies 1
#16 Toshiaki Yanokura Hitachi High-Technologies 1
#16 Hiroshi Narita Seiko Epson 1
#16 Yoshinobu Narita Sumitomo Chemical 1
#16 Masaru Miyoshi Junkosha 1
#16 Yasuhiko Mori Microsoft 1
#16 Ichiro Miyoshi Mitsubishi Hitachi Power Systems 1
#16 Kazuya SEKINE Hitachi Construction Machinery Co. 1
#16 Katsuhiro Harada NTT 1
#16 Yoshimichi Takada 1
#16 Naoyuki Kono Hitachi-Ge Nuclear Energy 1
#16 Toshimichi Minowa Hitachi 1
#16 Kuniaki Kimura Gradco Japan 1
#16 Tomomi Haraguchi Chukoh Chemical Industries 1
#16 Hayato Tobe Hitachi 1
#16 Yasunori Kawauchi Hitachi 1
#16 Masaya Ootsuka Hitachi-Ge Nuclear Energy 1
#16 Kazuichi Ishige Hitachi Automotive Systems 1
#16 Wataru Hatsuse Hitachi Astemo 1
#16 Kenichi Yagi 1
#16 Masato Fukuda Hitachi High-Technologies 1
#16 Hiromichi Koizumi Mitsubishi Materials 1
#16 Ryuji Kohno Hitachi 1
#16 Tadakazu Ohashi Mitsubishi Materials 1