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USPTO Patent Rankings Data through Dec 31, 2025
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Kashiwa, JP All Time

4,803 patents  ·  653 inventors

Ranked #702 of 112,640 cities Top 1%

Kashiwa, JP ranks #702 worldwide for total patents filed all time, with 4,803 patents from 653 inventors. Leading employers of inventors based in Kashiwa, JP include Unicharm, Hitachi, Kabushiki Kaisha Toshiba.

Showing 1–50 of 653 inventors

Rank Inventor Primary Company Patents
1 Hiroki Yamamoto Unicharm 292
2 Hiroshi Sakamoto Hitachi 271
3 Kazumi Sato Kabushiki Kaisha Toshiba 98
#4 Mitsuhiko Sato Canon 91
#5 Fumio Tazawa Canon 86
#6 Takashi Yokoya Canon 71
#7 Atsushi Ochiai National Cancer Center 53
#7 Hiroshi Aizawa Canon 53
#9 Tetsuya Uemura Powdertech Co. 50
#9 Yu Sasaki Toyota 50
#11 Hirotomo Tanaka Canon 43
#11 Takafumi Ishitsu Hitachi 43
#13 Nobuhiko Zaima Canon 41
#14 Jiro Tsukahara Fujitsu Limited 36
#15 Hidenori Matsumoto Canon 35
#16 Reiji Misawa Canon 34
#16 Takao Terayama Hitachi 34
#16 Junichi Yamakawa Canon 34
#19 Motohiro KOJIMA National Cancer Center 32
#19 Akiko Kanno Canon 32
#21 Izuru Horiuchi Canon 31
#21 Naoto Tokuma Canon 31
#23 Hiroaki Takezawa Sumitomo Electric Industries 29
#24 Shinsuke Ubayashi Canon 28
#24 Tadashi Osaka Hitachi 28
#26 Kazuyuki Iwamoto Canon 27
#26 Kazuaki Ono Canon 27
#28 Yasuhiro Matsumura Rin Institute 26
#28 Hiroyuki Uchino Pioneer 26
#28 Shuichi Matsuda Mitsubishi Electric 26
#31 Ryoji Nakayama Mitsubishi Materials 25
#31 Yasuki Kato Nanocarrier Co. 25
#31 Nobuo Miura Honda Motor Co. 25
#31 Akinori Nakayama Murata Manufacturing Co. 25
#35 Teruhito Kai Canon 24
#35 Kazutaka Sato Hitachi 24
#35 Takatoshi Chiba Canon 24
#38 Satoshi Tamano Hitachi Medical 23
#38 Katsuya Nose Canon 23
#38 Tomio Yamakawa Nippon Chemiphar Co. 23
#38 Hisao Osawa Nikon 23
#38 Daisuke Morikawa Canon 23
#38 Yasuhito Shirafuji Canon 23
#44 Masahiro Yasunaga Sakura Color Products 22
#44 Takao Sugiura Powdertech Co. 22
#44 Yasuyuki Moriyama Tetra Laval Holdings & Finance S.A. 22
#44 Nobuyuki Yomoda Canon 22
#44 Kazuhide Hasegawa Canon 22
#44 Noriyuki Miyazaki Smc 22
#44 Toshihiro Tsuchiya Shin-Etsu Handotai Co. 22

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