HA

Hiroo Akiyama

Yamaha: 2 patents #899 of 2,001Top 45%
NS Nippon Gakki Seizo: 1 patents #163 of 332Top 50%
Overall (All Time): #1,629,207 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6091677 Disc playing device Takehiro Mabuchi 2000-07-18
5115419 Disc playback device capable of continuously playing back a plurality of discs Kazuhiro Tamada 1992-05-19
4855990 Disc player 1989-08-08