IK

Ikuji Kurokawa

Yamaha: 2 patents #899 of 2,001Top 45%
NS Nippon Gakki Seizo: 1 patents #163 of 332Top 50%
Overall (All Time): #1,669,806 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4805513 Laminated FRP sound bar for percussive musical instruments Kenji Ito 1989-02-21
4778185 Wood-type core-shell golf club heads — 1988-10-18
4650626 Method of producing a golf club head — 1987-03-17