Inventor
ASANUMA TOYOHITO
JP3 patents
Patents
3 patentsUS6819650B2Nov 16, 2004
Optical disc having land pre-pits and variable groove depths
VICTOR COMPANY OF JAPAN14 citations81
US6733957B2May 11, 2004
Disk substrate and manufacturing method therefor, and disk manufactured by the disk substrate
VICTOR COMPANY OF JAPAN7 citations69
US6957444B2Oct 18, 2005
Optical disk and method of producing the same
VICTOR COMPANY OF JAPAN0 citations48