Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Saku, JP ranks #3,132 worldwide for total patents filed all time, with 965 patents from 140 inventors. Leading employers of inventors based in Saku, JP include Tdk, Tokyo Electron Limited, Minebea Co..

Showing 1–50 of 140 inventors

Rank Inventor Primary Company Patents
1 Kenji Hashizume Tdk 47
2 Masahiro Murata Tokyo Electron Limited 46
2 Kazushi Tanaka Tdk 46
#4 Hiroyuki Arioka Tdk 42
#5 Motoharu Akiyama Minebea Co. 41
#6 Katsumichi Tagami Tdk 33
#6 Hideki Satake Kabushiki Kaisha Toshiba 33
#8 Kazunori Kudo Hoya 29
#9 Morimasa Sasaki Tdk 27
#10 Yuji Ishihara Nissan Motor Co. 23
#10 Isamu Kuribayashi Tdk 23
#12 Hitoshi Hatate Tdk 21
#12 Kazuya Kuriyama Kabushiki Kaisha Toshiba 21
#14 Tadayoshi Iijima Tdk 20
#14 Toshiaki Ide Tdk 20
#14 Motohiko Shima Tdk 20
#17 Tomoki Ushida Tdk 18
#18 Yukihiro Isobe Tdk Electronics Ag 17
#19 Noboru Fujii Sony 16
#19 Yasufumi Takasugi Tdk 16
#19 Masanori Shibahara Tdk 16
#22 Akio Momoi Tdk 15
#23 Kaoru Koyanagi Semiconductor Energy Laboratory 14
#23 Kengo Kurata Kabushiki Kaisha Toshiba 14
#25 Yuki Otani Kabushiki Kaisha Toshiba 11
#25 Toru Shimozawa Tdk 11
#27 Takashi Namioka Tdk 10
#28 Naoto Shiga Tamron Co. 9
#28 Dohaku Inamori Minebea Mitsumi 9
#28 Kiyoto Fukushima Tdk 9
#28 Masato Hagimoto Ushio Denki Kabushiki Kaisha 9
#32 Masaki Kozu Tdk 8
#32 Yasuhiro Kurosawa Kabushiki Kaisha Toshiba 8
#32 Kazunori Kudoh Hoya 8
#35 Manabu Murakami Kabushiki Kaisha Toshiba 7
#36 Yoshinori Sakurai Midori Anzen Co. 6
#36 Masaoki Sekine Tdk Electronics Ag 6
#36 Shunichi Katase Tdk 6
#36 Heikki Sakari Paananen Nokia Technologies Oy 6
#36 Masaki Urano Soshin Electric Co. 6
#36 Eiichi Omata Tdk 6
#36 Tadashi Uchida Minebea Mitsumi 6
#43 Yuji Asanuma Tdk 5
#43 Yoshihiro Honjo Tdk 5
#43 Norihiko Shiratori Microstone 5
#43 Hiromichi Kanazawa Tdk 5
#43 Shigeharu Watase Tdk 5
#43 Hironobu Kimura Soshin Electric Co. 5
#43 Atsuko Motai Tdk 5
#50 Kunihisa Fujii Takamisawa Electric Co. 4