Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Kasugai, JP ranks #765 worldwide for total patents filed all time, with 4,420 patents from 842 inventors. Leading employers of inventors based in Kasugai, JP include Fujitsu Limited, Toyota, Ngk Insulators.

Showing 1–50 of 842 inventors

Rank Inventor Primary Company Patents
1 Yoshihiro Takemae Fujitsu Limited 156
2 Yukio Kobayashi Toyota 105
3 Kenji Morimoto Ngk Insulators 91
#4 Yasuhiro Komiya Olympus Optical Co. 82
#5 Koji Kawaguchi Fuji Electric Co. 69
#6 Osamu Mori Menicon Co. 67
#7 Tsuyoshi Nagae Brother Kogyo 60
#8 Susumu Sakuma Brother Kogyo 58
#8 Masashi Ishida Nichia 58
#10 Keiichiro Watanabe Ngk Insulators 47
#11 Yasushige Ogawa Fujitsu Limited 45
#12 Yoichiro Shimizu Brother Kogyo 44
#13 Junji Nakanishi Toyota 43
#14 Rentaro Kato Tokai Rubber Industries 41
#14 Naoki Iwata Ricoh Company 41
#16 Naoki Uenoyama Toyota 40
#17 Masashi Imai Brother Kogyo 38
#18 Tetsuya Ejiri Ngk Insulators 35
#19 Nobuo Tsuno Ngk Insulators 34
#19 Akinori Igarashi Brother Kogyo 34
#21 Kengo Asai Hitachi Media Electronics Co. 32
#21 Tadafumi Yoshida Toyota 32
#23 Takayoshi Akao Ngk Insulators 31
#23 Tomokazu Masuda Toyota 31
#25 Toshihiro Hirakawa Ngk Insulators 29
#25 Daisaku Honda Toyota 29
#27 Sugio Miyazawa Ngk Insulators 28
#27 Mitsuhiro Kataoka Denso 28
#29 Hiroaki Fukao Brother Kogyo 25
#29 Masaya Katayama Fujitsu Limited 25
#31 Masaru Sawada Fujitsu Limited 24
#31 Shigenori Ito Ngk Insulators 24
#33 Yujiro Miyata Toyota 22
#33 Shoji Hayashi Hitachi 22
#33 Kyuichi Takimoto Fujitsu Limited 22
#33 Chitoshi Ito Brother Kogyo 22
#33 Masanobu OHMI Toyota 22
#38 Yoshiharu Konishi Seiko Epson 21
#38 Junya Morikawa Nippondenso Co. 21
#38 Nobuhiro Terada Ngk Insulators 21
#38 Masaki Taniguchi Sumitomo Electric Industries 21
#38 Yoshihisa Ueda 21
#43 Hajime Maeno Tokai Rubber Industries 20
#43 Hiroyuki Nakazawa Sony 20
#45 Toshifumi Nishijima Toyota 19
#45 Toshiyuki Mamiya Brother Industries 19
#45 Nobuyuki Azuma Sharp Kabushiki Kaisha 19
#45 Kenji Hiratsuka Sumitomo Electric Industries 19
#49 Mie Takahashi Panasonic 18
#49 Kazufumi Komura Fujitsu Limited 18