AY

Akio Yatsui

Yamaha: 2 patents #899 of 2,001Top 45%
Overall (All Time): #2,009,545 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9379831 Acoustic controller Hisashi Nagai, Mizuyuki Shirai 2016-06-28
7825320 Electronic keyboard musical instrument for assisting in improvisation 2010-11-02