Inventor
MATSUMARU MASAAKI
JP7 patents
⚠️ This page may combine multiple inventors who share the name “MATSUMARU MASAAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
6 patentsUS5959962ASep 28, 1999
Optical disk having a format condition information drive
TOSHIBA KK44 citations90
US5809003ASep 15, 1998
Optical disk and optical information reproducing apparatus
TOSHIBA KK45 citations90
US5740138AApr 14, 1998
Apparatus for recording information on a primary optical disk to manufacture optical disks
TOSHIBA KK12 citations73
US6026072AFeb 15, 2000
Optical disk and method of manufacturing the same
TOSHIBA KK14 citations71
US6987714B2Jan 17, 2006
Disk, disk device and track center detection method
TOSHIBA KK3 citations62
US6741546B2May 25, 2004
Information recording medium, information recording apparatus, and information reproduction apparatus
TOSHIBA KK2 citations62