Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Ama, JP ranks #5,861 worldwide for total patents filed all time, with 431 patents from 18 inventors. Leading employers of inventors based in Ama, JP include Toyota, Brother Kogyo, Ngk Insulators.

Showing 1–18 of 18 inventors

Rank Inventor Primary Company Patents
1 Hiroki Nagai Toyota 133
2 Hirofumi Kondo Brother Kogyo 97
3 Masayuki Shinkai Ngk Insulators 35
#4 Yoichi Oi Aisin Aw Co. 31
#5 Yoichi Sakamoto Canon 28
#6 Katsuyuki Morita Kitagawa Industries Co. 27
#7 Masao Ichiyanagi Brother Kogyo 13
#7 Hayato Komatsu Jtekt 13
#9 Mitsuru Hattori Ngk Insulators 11
#9 Koji Nakahara Kabushiki Kaisha Toshiba 11
#11 Seiju Nagakura Toyokoki Co. 6
#11 Hiroaki Takeya Omron 6
#13 Reimon Fukuzawa Ngk Spark Plug Co. 5
#13 Noriaki Kabeya Brother Kogyo 5
#15 Norio Iwama Toyota Central R&D Labs 4
#16 Naoshi Tanimoto Aica Kogyo Co. 2
#16 Katsuya Ibaraki Delta Tooling Co. 2
#16 Kunio Ohira Ngk Insulators 2