Assignee
SAKURAI MASATOSHI
JP15 patents
Top patents by PatentIndex Score
US8300340B2Oct 30, 2012
Magnetic recording medium
SAKURAI MASATOSHI15 citations84
US8333899B2Dec 18, 2012
Method of manufacturing magnetic recording medium
SAKURAI MASATOSHI2 citations63
US8077416B2Dec 13, 2011
Magnetic recording medium formatted with ROM and RAM regions
SAKURAI MASATOSHI2 citations63
US8778162B2Jul 15, 2014
Stamper and method of manufacturing the same
SAKURAI MASATOSHI2 citations62
US8419952B2Apr 16, 2013
Method of manufacturing magnetic recording medium and magnetic recording apparatus
SAKURAI MASATOSHI2 citations62
US8116022B2Feb 14, 2012
Magnetic recording apparatus, magnetic recording medium, and method of testing magnetic recording apparatus
SAKURAI MASATOSHI4 citations62
US8748017B2Jun 10, 2014
Magnetic recording medium
SAKURAI MASATOSHI1 citations52
US8318331B2Nov 27, 2012
Magnetic recording medium, method for manufacturing the same, and magnetic recording apparatus
SAKURAI MASATOSHI1 citations52
US8308965B2Nov 13, 2012
Stamper, method of manufacturing the stamper, and magnetic recording medium manufacturing method using the stamper
SAKURAI MASATOSHI1 citations52
US8293387B2Oct 23, 2012
Magnetic recording medium and method of manufacturing the same
SAKURAI MASATOSHI0 citations52
US8289645B2Oct 16, 2012
Magnetic disk apparatus
SAKURAI MASATOSHI1 citations52
US8102616B2Jan 24, 2012
Magnetic recording medium, method of fabricating the same, and magnetic recording apparatus
SAKURAI MASATOSHI0 citations52
US9409238B2Aug 9, 2016
Hard coating for cutting tool, and cutting tool coated with hard coating
SAKURAI MASATOSHI0 citations50
US9551062B2Jan 24, 2017
Hard film for machining tools and hard film-coated metal machining tool
SAKURAI MASATOSHI1 citations46
US9109280B2Aug 18, 2015
Hard laminar coating
SAKURAI MASATOSHI0 citations44