Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Koganei, JP ranks #1,083 worldwide for total patents filed all time, with 3,137 patents from 449 inventors. Leading employers of inventors based in Koganei, JP include Hitachi, Fujitsu Limited, Janome Sewing Machine Co..

Showing 1–50 of 449 inventors

Rank Inventor Primary Company Patents
1 Ichiro Anjoh Hitachi 69
2 Atsushi Matsuda Fujitsu Limited 57
3 Nobufusa Kuroki Janome Sewing Machine Co. 56
#4 Atsuhiko Urushihara Hitachi 54
#5 Takahiko Kozaki Hitachi 52
#6 Yutaka Yamanaka Nec 50
#7 Takeshi Miyashita Seiko Epson 45
#8 Hirokazu Hasegawa Casio Computer Co. 44
#9 Ichiro Anjo Hitachi 43
#10 Kanji Iinuma Daiwa Seiko Co. 42
#11 Daisuke Furukawa Canon 41
#12 Kanji Oishi Elpida Memory 40
#13 Tadaaki Hirai Hitachi 39
#13 Hidetoshi Nishimura Panasonic 39
#15 Atsushi Noguchi Takata 38
#15 Toshihiko Takakura Rohm Co. 38
#17 Hiroshi Kase Kyowa Hakko Kogyo Co. 37
#18 Hiroya Ohkumo Subaru 32
#18 Takanori Nishiyama Hitachi 32
#20 Ryosuke Saito Kabushiki Kaisha Toshiba 31
#21 Yukiharu Akiyama Hitachi 29
#21 Tetsurou Matsumoto Hitachi 29
#21 Kenichi Takizawa Toyota 29
#21 Takeshi Furuno Hitachi 29
#25 Masashi Otsuki Bridgestone 28
#25 Masatada Horiuchi Hitachi 28
#25 Itaru Nishizawa Hitachi 28
#25 Shinya Otsu Konica Minolta 28
#25 Seiichi Nishikawa Toyota 28
#25 Keiro Muro Hitachi 28
#31 Fumihide Kojima National Institute Of Information And Communications Technology 27
#31 Hiroyuki Kamee Olympus 27
#33 Yasuhisa Kameda Daiwa Seiko Co. 25
#33 Takahide Sakamoto National Institute Of Information And Communications Technology 25
#35 Nobutaka Nishimura Kabushiki Kaisha Toshiba 24
#36 Takeo Yajima Koganei 23
#36 Toshihide Miura Konica 23
#36 Koushi Yamaguchi Sugatsune Kogyo Co. 23
#39 Takashi SHIONOYA Nikon 22
#39 Yoshiharu Takeuchi Denso 22
#39 Shinichi Nagao Mitsubishi Gas Chemical Company 22
#42 Kentaro Torisawa National Institute Of Information And Communications Technology 21
#43 Masafumi Moriyama Toyota 20
#43 Tadashi Hanaoka Citizen Watch Co. 20
#45 Haruo Horiguchi Konica Minolta 19
#45 Tomoaki Nagasaka Casio Computer Co. 19
#45 Atsushi Ogishima Hitachi 19
#48 Shuji Kikuchi Hitachi 18
#48 Kunihiko Morita Nippon Thompson Co. 18
#48 Yukio Ohya Konica 18