KF

Keiichi Fukatsu

Yamaha: 4 patents #621 of 2,001Top 35%
Overall (All Time): #1,213,466 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
10424275 Upright piano Azumi Yoshida, Hiroshi Komada, Hitoshi Izutani, Taishi SHINOHARA 2019-09-24
9099075 Standing wave attenuation device Satoshi Sekine, Rento Tanase, Shinichi Kato, Atsushi Yoshida 2015-08-04
8901404 Sound adjusting system and electronic musical instrument Fusako Ishimura, Takashi Kato, Rento Tanase 2014-12-02
8439158 Acoustic resonator and sound chamber Rento Tanase 2013-05-14