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USPTO Patent Rankings Data through Dec 31, 2025
Home › Cities › Joetsu, JP

Joetsu, JP All Time

5,229 patents  ·  239 inventors

Ranked #643 of 112,640 cities Top 1%

Joetsu, JP ranks #643 worldwide for total patents filed all time, with 5,229 patents from 239 inventors. Leading employers of inventors based in Joetsu, JP include Shin-Etsu Chemical Co., Sumitomo Electric Industries, Murata Manufacturing Co..

Showing 1–50 of 239 inventors

Rank Inventor Primary Company Patents
1 Jun Hatakeyama Shin-Etsu Chemical Co. 570
2 Takeshi Kinsho Shin-Etsu Chemical Co. 262
3 Koji Hasegawa Shin-Etsu Chemical Co. 257
#4 Tsutomu Ogihara Shin-Etsu Chemical Co. 192
#5 Takeru Watanabe Shin-Etsu Chemical Co. 188
#6 Mamoru Shoji Sumitomo Electric Industries 152
#7 Toshinobu Ishihara Shin-Etsu Chemical Co. 125
#8 Masaki Takeuchi Murata Manufacturing Co. 114
#9 Takayuki Fujiwara Shin-Etsu Chemical Co. 111
#10 Takashi Miyazaki Nec 107
#11 Yukio Inazuki Shin-Etsu Chemical Co. 100
#11 Seiichiro Tachibana Shin-Etsu Chemical Co. 100
#13 Yuji Harada Shin-Etsu Chemical Co. 91
#14 Daisuke KORI Shin-Etsu Chemical Co. 90
#15 Youichi Ohsawa Shin-Etsu Chemical Co. 89
#16 Yoshio Kawai Shin-Etsu Chemical Co. 86
#17 Hideo Kaneko Shin-Etsu Chemical Co. 82
#18 Katsuya Takemura Shin-Etsu Chemical Co. 81
#19 Naoya Inoue Renesas Electronics 78
#19 Motoaki Iwabuchi Shin-Etsu Chemical Co. 78
#21 Tohru Kubota Shin-Etsu Chemical Co. 74
#22 Masayoshi Sagehashi Shin-Etsu Chemical Co. 73
#23 Masahiro Fukushima Shin-Etsu Chemical Co. 66
#24 Tsutomu Yamakawa Kabushiki Kaisha Toshiba 64
#25 Keiichi Masunaga Shin-Etsu Chemical Co. 62
#26 Takafumi Ueda Shin-Etsu Chemical Co. 54
#27 Daisuke Domon Shin-Etsu Chemical Co. 53
#27 Takashi Yoshii Sharp Kabushiki Kaisha 53
#29 Akira Hayashida Shin-Etsu Chemical Co. 51
#30 Tsukasa Watanabe Aisin Seiki Kabushiki Kaisha 50
#31 Takayuki Nagasawa Shin-Etsu Chemical Co. 48
#32 Naosuke Maruyama Shin-Etsu Chemical Co. 42
#33 Naoki Ishibashi Shin-Etsu Chemical Co. 41
#33 Kazunori Maeda Shin-Etsu Chemical Co. 41
#33 Tomomi Watanabe Mazda Motor 41
#36 Yuki Miyake Shin-Etsu Chemical Co. 37
#37 Daijitsu Harada Shin-Etsu Chemical Co. 34
#37 Takehiko Fukumoto Shin-Etsu Chemical Co. 34
#39 Mikio Endo Shin-Etsu Chemical Co. 30
#40 Hisatoshi Otsuka Shin-Etsu Chemical Co. 29
#40 Masashi Iio Shin-Etsu Chemical Co. 29
#42 Miyoshi Yamashita Shin-Etsu Chemical Co. 28
#43 Hiroyuki Urano Shin-Etsu Chemical Co. 27
#43 Yusuke Biyajima Shin-Etsu Chemical Co. 27
#43 Kazuhisa Hayakawa Shin-Etsu Chemical Co. 27
#43 Kazumi Noda Shin-Etsu Chemical Co. 27
#47 Ryuichi Saguchi Shin-Etsu Chemical Co. 25
#48 Kouhei Sasamoto Shin-Etsu Chemical Co. 23
#48 Yoichi Tonomura Shin-Etsu Chemical Co. 23
#50 Teppei Adachi Shin-Etsu Chemical Co. 22

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