Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–6 of 6 inventors

Rank Inventor Primary Company Patents
1 Sadao Murata Seiko Epson 2
2 Norio Matsunaga Minolta Co. 1
2 Tatsumi Matsushita Mitsui Chemicals 1
2 Takashi Akutagawa Stanley Electric Co. 1
2 Isamu Yamanishi Kubota 1
2 Akira Teraoka Kubota 1