Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Ichikawa, JP ranks #2,093 worldwide for total patents filed in 2021, with 63 patents from 44 inventors. Leading employers of inventors based in Ichikawa, JP include IBM, Yazaki, Kabushiki Kaisha Toshiba.

Showing 1–44 of 44 inventors

Rank Inventor Primary Company Patents
1 Asim Munawar IBM 4
1 Tung D. Le IBM 4
1 Sho Kurata Yazaki 4
#4 Shinya Nunoue Kabushiki Kaisha Toshiba 3
#4 Yuji Takatsuka Mitsubishi Electric 3
#6 Masuyoshi Yamada Hitachi 2
#6 Koji Sagata Toyota 2
#6 Kensuke Kuraki Fujitsu Limited 2
#6 Sachiko Shirakawa Murata Manufacturing Co. 2
#6 Takamichi Kasai Kabushiki Kaisha Toshiba 2
#6 Shuhei Nishiyama Toto 2
#12 Reiji Oshima Furukawa Electric Co. 1
#12 Hiroyasu Sumida Ricoh Company 1
#12 Yasunori Ono Daiichi Sankyo Company, Limited 1
#12 Kohhei Nomura IBM 1
#12 Kazuyuki Hatakeyama Heiwa Kagaku Industry Co. 1
#12 Ryosuke NAGATA Toyota 1
#12 Mitsuhiko Sugane Fujitsu Limited 1
#12 Mayumi Yoshitake IBM 1
#12 Shinichi Ikoma Canon 1
#12 Makiko Kida Helen Of Troy Limited 1
#12 Kenichi Shirai Canon 1
#12 Shuhei Nakakura Sumitomo Metal Mining Co. 1
#12 Yoshinori Yanagisawa Riken 1
#12 Yohei Hiura Kabushiki Kaisha Toshiba 1
#12 Kazuyuki Ohyama Nec 1
#12 Yuji Omote Toda Kogyo 1
#12 Shoji Takanashi Sumitomo Metal Mining Co. 1
#12 Nobuo Shimegi 1
#12 Harumasa Hatakeyama Heiwa Kagaku Industry Co. 1
#12 Yasuharu Kanno N.E. Chemcat 1
#12 Mahito Arai Sumitomo Rubber Industries 1
#12 Yu Okada Toyota 1
#12 Hirokuni Miyamoto National University Corporation Chiba University 1
#12 Takeo Oshima Kyocera 1
#12 Shintaro Fujiwara Kioxia 1
#12 Tsuyoshi Waki Kenwood Limited 1
#12 Kunihiko Utata 1
#12 Kazuhiro Konno IBM 1
#12 Yasuhiro Hataya Ntt Communications 1
#12 Akira Saitoh Tdk 1
#12 Yousuke Hata Canon 1
#12 Yusuke Hirose Nisshin Steel Co. 1
#12 Tetsumei Tsuruoka Fujitsu Limited 1