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USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–4 of 4 inventors

Rank Inventor Primary Company Patents
1 Hidetoshi Saito Kabushiki Kaisha Toshiba 4
2 Nobuya Ito Daicel Chemical Industries 1
2 Makoto Ubukata Kusumoto Chemicals 1
2 Kikuo Koma Komatsu Ntc 1