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

Chiyoda, JP All Time

14,867 patents  ·  1,712 inventors

Ranked #196 of 112,640 cities Top 1%

Chiyoda, JP ranks #196 worldwide for total patents filed all time, with 14,867 patents from 1,712 inventors. Leading employers of inventors based in Chiyoda, JP include Mitsubishi Electric, Ntt Docomo, Sumitomo Electric Industries.

Showing 1–50 of 1,712 inventors

Rank Inventor Primary Company Patents
1 Yoshihito Asao Mitsubishi Electric 308
2 Mikio Iwamura Ntt Docomo 192
3 Osamu Kato Sumitomo Electric Industries 172
3 Hideo Kawamura Isuzu Motors Limited 172
#5 Masayoshi Suzuki Nec 159
#6 Masahiro Ozawa Ntn 136
#7 Masaya Inoue Mitsubishi Electric 111
#8 Keiichi Murakami Ntt Docomo 106
#9 Yukihiko Okumura Ntt Docomo 103
#10 Hiroyuki Akita Mitsubishi Electric 98
#11 Tohru Kimura Konica Minolta Opto 89
#12 Takayuki Kifuku Mitsubishi Electric 88
#13 Toshinari Ogiwara Idemitsu Kosan Co. 86
#14 Koji Nozaki Fujitsu Limited 83
#14 Toru Takeda Sony 83
#14 Osamu Goto Sony 83
#17 Mamoru Watanabe Seiko Instruments 81
#17 Shigeru Kusunoki Mitsubishi Electric 81
#17 Takayuki Tamura Hitachi 81
#17 Takahiro Kimura Toyota 81
#21 Yasuhiro Oda Ntt Docomo 78
#21 Tatsuya Inoue Sharp Kabushiki Kaisha 78
#23 Osamu Morimoto Mitsubishi Electric 77
#24 Yoshihiko Onishi Mitsubishi Electric 75
#24 Shunichi Wada Mitsubishi Electric 75
#26 Tetsuya Yamaguchi Kabushiki Kaisha Toshiba 72
#27 Koji Hirose Mitsubishi Electric 71
#28 Kazunari Suzuki Hitachi 69
#29 Shinichi Wakamoto Mitsubishi Electric 68
#30 Toshihisa Ogura Mitsubishi Electric 61
#30 Tatsuya Ochi Hitachi 61
#32 Motoshi Tamura Ntt Docomo 57
#33 Hajime Nakajima Mitsubishi Electric 56
#34 Hidetoshi Kayama Ntt Docomo 55
#35 Kimihiko Tanaya Mitsubishi Electric 54
#35 Hiroshi Aruga Mitsubishi Electric 54
#37 Hiroshi Kameda Tdk 53
#38 Yoshio Yamamoto Honda Motor Co. 52
#38 Shogo Okamoto Mitsubishi Electric 52
#40 Yuji Kawano Mitsubishi Electric 51
#40 Keiichi Enoki Mitsubishi Electric 51
#40 Manabu Yoshimura Mitsubishi Electric 51
#43 Toshiaki Kashihara Mitsubishi Electric 50
#44 Shigeki Tanaka Sharp Kabushiki Kaisha 48
#45 Masami Abe Oki Electric Industry Co. 46
#45 Jiyun Shen Ntt Docomo 46
#47 Moriyuki Hazeyama Mitsubishi Electric 45
#48 Hiroshi Yamakawa Hitachi 44
#48 Takafumi Inoue Nuflare Technology 44
#50 Yusuke Shimazu Mitsubishi Electric 43

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