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

Akihiko Kashiwabara — 1 Patent

Overall (All Time): #4,024,466 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4552242 Coaxial type composite loudspeaker 1985-11-12