RK

Ryouichi Kawasaki

SC Sanyo Electric Co.: 2 patents #2,557 of 6,347Top 45%
Overall (All Time): #2,089,508 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8165003 Optical pickup device Tohru Hotta, Shigeru Nakamura 2012-04-24
7554751 Lens and optical pickup device Tohru Hotta 2009-06-30