SS

Syoji Sugaya

SC Sanyo Electric Co.: 2 patents #2,557 of 6,347Top 45%
Overall (All Time): #2,320,832 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4903255 Optical recording disc Toshihiro Rokujo, Hisayoshi Asahino 1990-02-20
4891800 Optical recording disc — 1990-01-02