Inventor
FUKUSHIMA YOSHIHITO
JP23 patents
⚠️ This page may combine multiple inventors who share the name “FUKUSHIMA YOSHIHITO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
21 patentsUS6986152B2Jan 10, 2006
Optical information recording medium
SONY CORP7 citations74
US7008216B2Mar 7, 2006
Molding die apparatus, method for molding disc substrate, and disc-shaped recording medium
SONY CORP6 citations73
US6800348B2Oct 5, 2004
Optical recording medium
SONY CORP7 citations73
US6625090B1Sep 23, 2003
Magneto-optical recording medium, and magneto-optical recording/reproducing apparatus
SONY CORP8 citations73
US6198704B1Mar 6, 2001
Magneto-optical recording medium
SONY CORP11 citations72
US5993616ANov 30, 1999
Method for producing a magneto-optical recording medium
SONY CORP15 citations72
US5793738AAug 11, 1998
Optical disc
SONY CORP4 citations63
US5625620AApr 29, 1997
Optical disc
SONY CORP4 citations63
US7701627B2Apr 20, 2010
Holographic recording medium, holographic writing system and holographic reading system
SONY CORP2 citations62
US5751670AMay 12, 1998
Magneto-optical disk having variable thickness recording layer but adequate uniform reflectance value
SONY CORP2 citations62
US6033538AMar 7, 2000
Magneto-optical recording medium production method
SONY CORP4 citations61
US5966349AOct 12, 1999
Rewritable high density magneto-optical disk
SONY CORP6 citations57
US8009339B2Aug 30, 2011
Holographic recording medium, holographic writing system and holographic reading system
SONY CORP0 citations52
US7920309B2Apr 5, 2011
Holographic recording medium, holographic writing system and holographic reading system
SONY CORP0 citations52
US7294281B2Nov 13, 2007
Optical information recording medium, original disc for optical information recording medium, and method of manufacturing the same
SONY CORP0 citations52
US6208595B1Mar 27, 2001
Magneto-optical recording medium
SONY CORP1 citations52
US7632429B2Dec 15, 2009
Method for molding disc substrate
SONY CORP0 citations51
US7396575B2Jul 8, 2008
Molding die apparatus, method for disc substrate, and disc-shaped recording medium
SONY CORP0 citations51
US7420910B2Sep 2, 2008
Optical recording/reproducing method for multiple recording media with different recording density
SONY CORP0 citations50
US7113470B2Sep 26, 2006
Optical recording and reproducing method and optical recording medium
SONY CORP0 citations50
US7348056B2Mar 25, 2008
Fine particle dispersion composition, optical component, optical film laminate, polarization splitting device, and method for manufacturing the optical component
SONY CORP1 citations42