Inventor
HIRATSUKA RYOICHI
JP15 patents
Patents
15 patentsUS6319325B1Nov 20, 2001
Apparatus for producing thin film, process for producing thin film and guide roller
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US6110584AAug 29, 2000
Magnetic recording medium
SONY CORP15 citations72
US5945219AAug 31, 1999
Magnetic recording medium and method for producing same
SONY CORP12 citations72
US6447652B1Sep 10, 2002
Thin-film forming method and thin-film forming apparatus
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US11621020B2Apr 4, 2023
Magnetic recording medium
SONY CORP0 citations61
US5968609AOct 19, 1999
Magnetic recording medium and method for producing same
SONY CORP2 citations61
US6999278B2Feb 14, 2006
Cleaning tape with surface protrusions formed by particles of predetermined size/density and non-magnetic metal evaporated film of predetermined thickness
SONY CORP2 citations60
US6800374B2Oct 5, 2004
Cleaning tape
SONY CORP5 citations60
US11468910B2Oct 11, 2022
Magnetic recording medium having reinforced substrate
SONY CORP0 citations59
US9607813B2Mar 28, 2017
Magnetic field generation apparatus and sputtering apparatus
SONY CORP1 citations51
US11423936B2Aug 23, 2022
Magnetic recording medium and method of producing the same
SONY CORP0 citations50
US7531251B2May 12, 2009
Magnetic recording medium
SONY CORP0 citations49
US7449221B2Nov 11, 2008
Metallic thin film type magnetic recording medium and method of manufacturing thereof
SONY CORP0 citations46
US7070871B2Jul 4, 2006
Metallic thin film type magnetic recording medium and method of manufacturing thereof
SONY CORP0 citations46
US7214436B2May 8, 2007
Magnetic recording medium and process for producing same
SONY CORP1 citations45