Inventor
KATSUMURA MASAHIRO
JP19 patents
⚠️ This page may combine multiple inventors who share the name “KATSUMURA MASAHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER CORP
11 patentsUS6307826B1Oct 23, 2001
Information recording medium and method for recording information thereon
PIONEER CORP35 citations92
US6695987B2Feb 24, 2004
Production method for optical disc
PIONEER CORP7 citations74
US6882615B2Apr 19, 2005
Optical disc and apparatus for manufacturing a master disc therefor
PIONEER CORP5 citations73
US6344275B2Feb 5, 2002
Electrode material for forming stamper and thin film for forming stamper
PIONEER CORP5 citations63
US7632628B2Dec 15, 2009
Stamper and method for production thereof
PIONEER CORP2 citations62
US7276692B2Oct 2, 2007
Beam adjusting sample, beam adjusting method and beam adjusting device
PIONEER CORP4 citations62
US6849390B2Feb 1, 2005
Stamper-forming electrode material, stamper-forming thin film, and method of manufacturing optical disk
PIONEER CORP4 citations58
US7554896B2Jun 30, 2009
Electron beam recording apparatus
PIONEER CORP1 citations51
US7065034B2Jun 20, 2006
Optical disc and apparatus for manufacturing a master disc therefor
PIONEER CORP0 citations51
US6657934B2Dec 2, 2003
Information recording apparatus and method therefor
PIONEER CORP0 citations51
US7225192B2May 29, 2007
Hybrid recording medium and information recording apparatus
PIONEER CORP0 citations49
PIONEER ELECTRONIC CORP
3 patentsUS5446722AAug 29, 1995
Information recording apparatus having magnetic shield means
PIONEER ELECTRONIC CORP24 citations91
US5179547AJan 12, 1993
Phase change optical information recording medium including means for preventing movement of the recorded portion
PIONEER ELECTRONIC CORP21 citations89
US5195080AMar 16, 1993
Optical recording medium initializing method and apparatus
PIONEER ELECTRONIC CORP15 citations73