Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–16 of 16 inventors

Rank Inventor Primary Company Patents
1 Akihiro Itoh Ricoh Company 6
2 Hisaya Takahashi Nec 3
3 Oliver Gronwald Japan Science And Technology Agency 1
3 Nobuo Kawato Mitsui Chemicals 1
3 Akihito Yamasaki Panasonic 1
3 Ryuya Yamanaka Kurume University 1
3 Hisayuki Tsujimori Otsuka Pharmaceutical Co. 1
3 Kazuya Koumoto Japan Science And Technology Agency 1
3 Katsuo Hori Panasonic 1
3 Kiyoko Imaizumi Otsuka Pharmaceutical Co. 1
3 Shigetoshi Kuma Mitsui Chemicals 1
3 Yasuhiro Hidai Noritake Co., Limited 1
3 Keiichi Mitsuyama Kurume University 1
3 Shizuka Ishii Noritake Co., Limited 1
3 Kazunari Hirakawa Fujitsu Limited 1
3 Kyosuke Masaki Otsuka Pharmaceutical Co. 1