Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Handa, JP ranks #1,820 worldwide for total patents filed all time, with 1,823 patents from 266 inventors. Leading employers of inventors based in Handa, JP include Denso, Pioneer Electronic, Nsk.

Showing 1–50 of 266 inventors

Rank Inventor Primary Company Patents
1 Masami Niimi Denso 112
2 Fumio Matsui Pioneer Electronic 89
3 Masami Tanaka Nsk 83
#4 Kazuhiro Nobori Ngk Insulators 60
#5 Toshihisa Kato Advics Co. 57
#6 Toshihisa Taniguchi Denso 54
#6 Masaki Ishikawa Ngk Insulators 54
#8 Kazuki Sawada Aisin Seiki Kabushiki Kaisha 41
#9 Kanechiyo Terada Denso 39
#10 Masayuki Katayama Nippondenso Co. 32
#11 Seiichiro Ishio Denso 29
#11 Tomonori Seki Omron 29
#13 Yutaka Unno Ngk Insulators 28
#14 Ryusuke Ushikoshi Ngk Insulators 26
#15 Kimikazu Nakamura Denso 25
#16 Hikaru Yoshizumi Brother Kogyo 24
#16 Kosuke Mori Brother Kogyo 24
#16 Masahiro Shirai Canon 24
#19 Soichiro Mase Brother Kogyo 22
#20 Seiya INOUE Ngk Insulators 21
#20 Makoto Inomata Denso 21
#22 Takuzou Mukai Denso 19
#22 Mitsuru Kojima Jnc 19
#22 Masanobu Matsusaka Aisin Seiki Kabushiki Kaisha 19
#25 Takehide Nakamura Aisan Kogyo Kabushiki Kaisha 18
#26 Michihiro Ohashi Toyota 16
#27 Tetsuya Kawajiri Ngk Insulators 15
#27 Riichiro Shibakawa Pfizer 15
#27 Masazumi Yoshida Minolta 15
#30 Sota Goto Jfe Steel 14
#31 Kenichiro AIKAWA Ngk Insulators 12
#31 Hiroko Mori Brother Kogyo 12
#31 Yuji Ninagawa Toyota 12
#31 Takaharu Iwadachi Ngk Insulators 12
#31 Ryota Takeuchi Kawasaki 12
#36 Tooru Taguchi Denso 11
#36 Masatoshi KOMIYAMA Toyota 11
#38 Yasuhisa Inaba Aisin Seiki Kabushiki Kaisha 10
#38 Masatada Araki Nippon Oil & Fats Co. 10
#38 Katsuki Ishigaki Toyota 10
#38 Takashi Kataigi Ngk Insulators 10
#38 Kunihiko Kondo Brother Kogyo 10
#38 Ryutaro Maki Brother Kogyo 10
#44 Makoto MASE Aisan Kogyo Kabushiki Kaisha 9
#45 Yuji AKATSUKA Ngk Insulators 8
#45 Hirofumi Hagio Denso 8
#45 Yasuo Akitsu Ngk Insulators 8
#45 Mamoru Niimi Aisin Aw Co. 8
#45 Takahiro Souki Denso 8
#45 Shunji Mase Denso 8