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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Kai, JP ranks #7,503 worldwide for total patents filed in 2021, with 12 patents from 6 inventors. Leading employers of inventors based in Kai, JP include Seiko Epson, Hitachi Automotive Systems, Taiyo Nippon Sanso.

Showing 1–6 of 6 inventors

Rank Inventor Primary Company Patents
1 Yasuhiro ITAYAMA Seiko Epson 4
2 Ayae Sawado Seiko Epson 2
2 Shiro Nagashima Hitachi Automotive Systems 2
2 Naoki SEINO Taiyo Nippon Sanso 2
#5 Yuuki Nishimura Nipro 1
#5 Kazunori Koishi Tadano 1