Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Iwakura, JP ranks #5,220 worldwide for total patents filed all time, with 504 patents from 86 inventors. Leading employers of inventors based in Iwakura, JP include Brother Kogyo, Kabushiki Kaisha Toshiba, Brother Industries.

Showing 1–50 of 86 inventors

Rank Inventor Primary Company Patents
1 Yuki Okumura Brother Kogyo 31
2 Haruhiko Okazaki Kabushiki Kaisha Toshiba 30
3 Masanori Oda Brother Industries 26
#4 Satoru Moriyama Brother Kogyo 25
#5 Hirokazu Banno Brother Kogyo 23
#6 Ryo Onishi Ngk Insulators 20
#6 Yoshiki Funahashi Tokai Rubber Industries 20
#8 Morio Mizuno Mclaughlin Manufacturing Company 16
#8 Kenichi Funato Fujitsu Limited 16
#10 Kazuki Nakano Brother Industries 13
#10 Soun Kanada Brother Kogyo 13
#12 Yusuke Todo Denso 12
#12 Takuya Amaike Brother Kogyo 12
#14 Yoshiaki Kida Denso 11
#14 Koshi Torii Nippondenso Co. 11
#16 Tomohiro Ban Brother Kogyo 10
#17 Kota Yokoyama Osaka Gas Co. 9
#17 Masanori Kito Koito Manufacturing Co. 9
#17 Shigehiko Kunieda Ngk Insulators 9
#20 Ryo Hirai Tokai Rubber Industries 8
#20 Youhei Nagano Denso 8
#20 Takeshi Nawata Toyota 8
#20 Masato Tamaoki Toyota 8
#24 Marino KISHI Nichia 7
#24 Mitsuru Sugihara Fujitsu Limited 7
#24 Kiyoshi Okuda Fujisawa Pharmaceutical Co. 7
#27 Hiyoshi Yamada Daido Tokushuko 6
#27 Reiko Toyama Brother Kogyo 6
#27 Yasunori Iriyama Fujitsu Limited 6
#27 Takuya Shimamura Ngk Spark Plug Co. 6
#27 Yasushi Iwama Nippn 6
#27 Nobuyasu Naito Denso 6
#27 Tomoki Kawai Ngk Spark Plug Co. 6
#34 Hiroyasu Kudo Denso 4
#34 Sadanori Shimura Ngk Insulators 4
#34 Ichizou Shiga Toyoda Gosei Co. 4
#34 Kenichi Hirano Amano Pharmaceutical Co. 4
#34 Yorishige Shimizu Sumitomo Riko Company Limited 4
#39 Kiyomi Sakakibara Toyota 3
#39 Akio Ebizawa Ngk Spark Plug Co. 3
#39 Sadao Noda Sunx Limited 3
#39 Tsuneaki Takashima Ngk Spark Plug Co. 3
#39 Shinichi Kameyama Fujitsu Limited 3
#39 Haruhiko Shigeta Ngk Spark Plug Co. 3
#39 Yuushi Hashimoto Tokai Rubber Industries 3
#39 Haruki Baba Brother Kogyo 3
#47 Masanori Kitou Ngk Spark Plug Co. 2
#47 Yuso Ogawa Daifuku Co. 2
#47 Hirokazu Kishimoto Brother Kogyo 2
#47 Takaaki Oohashi Denso 2