Inventor

IKENAGA HIROYUKI

JP3 patents

Patents

3 patents

US5490131AFeb 6, 1996

Optical disk

SHARP KK31 citations91

US5053252AOct 1, 1991

Method and apparatus for manufacturing optical memory devices

SHARP KK14 citations73

US6067285AMay 23, 2000

Optical disc

SHARP KK8 citations72