Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
NH

Naoji Hasegawa — 1 Patent

Overall (All Time): #3,424,097 of 4,157,543Top 85%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7083661 Air filter element and method of producing the same Isamu Kawawa, Takayoshi Kuboyama 2006-08-01