Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Bunkyo, JP ranks #2,438 worldwide for total patents filed in 2018, with 50 patents from 32 inventors. Leading employers of inventors based in Bunkyo, JP include Kabushiki Kaisha Toshiba, The University Of Tokyo, Japan Science And Technology Agency.

Showing 1–32 of 32 inventors

Rank Inventor Primary Company Patents
1 Kenichiro Yoshii Kabushiki Kaisha Toshiba 5
2 Yasuhiko Arakawa The University Of Tokyo 4
2 Motomu Kanai Japan Science And Technology Agency 4
#4 Kazunari Domen The University Of Tokyo 3
#5 Katsuyuki Naito Kabushiki Kaisha Toshiba 2
#5 Shigeo Maruyama The University Of Tokyo 2
#5 Yohei Soma Japan Science And Technology Agency 2
#5 Koichi Harada Fujikura 2
#5 Makoto Asakura Kabushiki Kaisha Toshiba 2
#5 Po-Chin Huang Unknown 2
#11 Nobuyoshi Kurita 1
#11 Suguru Dohi Taiho Pharmaceutical Co. 1
#11 Taichi SAKAI Ichikawa Co. 1
#11 Hiroshi Nishiyama Murata Manufacturing Co. 1
#11 Mitsuhiko Kitagawa Kabushiki Kaisha Toshiba 1
#11 Yoichiro KUNINOBU Japan Science And Technology Agency 1
#11 Izumi Katsuta Kao 1
#11 Kazuhito Hashimoto Unknown 1
#11 Minoru Ono Fujitsu Limited 1
#11 Suguru Kondo 1
#11 Masaki Ihara Ehs Lens Philippines 1
#11 Yuya Takamori Ichikawa Co. 1
#11 Mayuko Hirahara Kao 1
#11 Hirofumi Murakami Sony 1
#11 Takashi Michikawa Ihi 1
#11 Ryo Umehara Ichikawa Co. 1
#11 Ai Tamura Ichikawa Co. 1
#11 Yuji Mizoguchi Okuma 1
#11 Jin Takahashi Fujitsu Limited 1
#11 Shu Yamaguchi Kao 1
#11 Katsuaki Tanabe Fujitsu Limited 1
#11 Chie Umehara Ichikawa Co. 1