Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–3 of 3 inventors

Rank Inventor Primary Company Patents
1 Yoshifumi TSUTAI Ngk Spark Plug Co. 3
2 Yuuki Hayasaka Ngk Spark Plug Co. 1
2 Atsutoshi Iwabuchi Ngk Spark Plug Co. 1