Inventor
OGAWA IPPEI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “OGAWA IPPEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
8 patentsUS6280810B1Aug 28, 2001
Phase-change information recording medium and optical recording method to make higher rotation rates feasible
RICOH KK131 citations97
US6388978B1May 14, 2002
Optical recording method for a rewritable phase-change optical recording medium
RICOH KK54 citations92
US6562432B2May 13, 2003
Optical recording medium and method of manufacturing the optical recording medium
RICOH KK21 citations90
US6866910B2Mar 15, 2005
Information recording medium
RICOH KK12 citations82
US6497935B1Dec 24, 2002
Phase-change optical information recording medium
RICOH KK11 citations72
US7403457B2Jul 22, 2008
Method and apparatus for recording information with a multi-layer structure
RICOH KK6 citations71
US7190652B2Mar 13, 2007
Pulse shape modulation and information recording and reproducing technique using pulsed laser beam
RICOH KK2 citations61
US6697312B2Feb 24, 2004
Phase-change optical information recording method
RICOH KK1 citations51