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USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–4 of 4 inventors

Rank Inventor Primary Company Patents
1 Kazuo Sakamaki Yukiwa Seiko 3
2 Chokichi Sato Yukiwa Seiko 1
2 Tadashi Taniguchi Sony 1
2 Tomohiko Kikuchi Teac 1