Inventor
SUGA KEIJI
JP7 patents
⚠️ This page may combine multiple inventors who share the name “SUGA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER CORP
6 patentsUS6656560B2Dec 2, 2003
Multi-layer optical recording medium and method of manufacturing the same
PIONEER CORP30 citations91
US6464485B1Oct 15, 2002
Ultrasonic injection mold for an optical disk
PIONEER CORP20 citations89
US6881051B2Apr 19, 2005
Mold for injection molding of disc substrate
PIONEER CORP2 citations61
US6478570B1Nov 12, 2002
Disc-manufacturing mold and disc manufacturing apparatus using the same
PIONEER CORP4 citations61
US6770162B2Aug 3, 2004
Method of manufacturing a disk and transfer method for the disk
PIONEER CORP5 citations60
US7006427B2Feb 28, 2006
Multi-layer optical recording medium and method of manufacturing the same
PIONEER CORP1 citations51