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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Isa, JP ranks #12,324 worldwide for total patents filed all time, with 145 patents from 15 inventors. Leading employers of inventors based in Isa, JP include Sumitomo Metal Mining Co., Ohkuchi Materials Co., Yazaki.

Showing 1–15 of 15 inventors

Rank Inventor Primary Company Patents
1 Mika Okada Sumitomo Metal Mining Co. 27
2 Takeshi Chonan Sumitomo Metal Mining Co. 26
3 Hirofumi TSUNEMATSU Sumitomo Metal Mining Co. 23
#4 Kaoru Hishiki Ohkuchi Materials Co. 15
#5 Hideaki Fukuyama Sumitomo Metal Mining Co. 12
#6 Yukihiro Koyama Yazaki 10
#7 Keiichi Otaki Ohkuchi Materials Co. 7
#7 Kotaro Tomeoka Ohkuchi Materials Co. 7
#9 Ryoichi Yoshimoto Nichia 5
#10 Shigeru Hosomomi Ohkuchi Materials Co. 3
#10 Ryo Togashi Sumitomo Metal Mining Co. 3
#12 Ryouichi Yoshimoto Ohkuchi Materials Co. 2
#12 Juntaro Mikami Sumitomo Metal Mining Co. 2
#12 Shunichi Kidoguchi Ohkuchi Materials Co. 2
#15 Takahisa KAWANO Sumitomo Metal Mining Co. 1