YK

Yuji Kumai

SO Sony: 3 patents #10,744 of 25,231Top 45%
Overall (All Time): #1,612,632 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6636158 Information processing apparatus and method, and program storage medium Hiroyuki Bando, Hiroto Narioka 2003-10-21
5742578 Information recording and reproducing apparatus using light beam modulation on a spiral guide groove disk Kyoko Suzuki 1998-04-21
4995026 Apparatus and method for encoding audio and lighting control data on the same optical disc Dai Makabe 1991-02-19