Inventor
UMEZAWA TEIICHIRO
SG30 patents
⚠️ This page may combine multiple inventors who share the name “UMEZAWA TEIICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UMEZAWA TEIICHIRO
7 patentsUS8623528B2Jan 7, 2014
Method of manufacturing perpendicular magnetic recording medium and perpendicular magnetic recording medium
UMEZAWA TEIICHIRO73 citations97
US8546000B2Oct 1, 2013
Perpendicular magnetic disc
UMEZAWA TEIICHIRO69 citations97
US8309239B2Nov 13, 2012
Perpendicular magnetic recording medium and method of manufacturing the same
UMEZAWA TEIICHIRO69 citations97
US8142916B2Mar 27, 2012
Magnetic recording medium
UMEZAWA TEIICHIRO72 citations97
US9240204B2Jan 19, 2016
Perpendicular magnetic recording disc
UMEZAWA TEIICHIRO0 citations41
US8697261B2Apr 15, 2014
Perpendicular magnetic recording medium
UMEZAWA TEIICHIRO0 citations41
US9349404B2May 24, 2016
Perpendicular magnetic recording disc
UMEZAWA TEIICHIRO0 citations39
HOYA CORP
6 patentsUS7420886B2Sep 2, 2008
Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium
HOYA CORP70 citations97
US7220500B1May 22, 2007
Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium
HOYA CORP76 citations97
US6759138B2Jul 6, 2004
Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer
HOYA CORP94 citations97
US6670055B2Dec 30, 2003
Magnetic recording medium and manufacturing method therefor
HOYA CORP87 citations97
US9946153B2Apr 17, 2018
Mask blank and transfer mask
HOYA CORP0 citations52
US9470971B2Oct 18, 2016
Mask blank, transfer mask, and methods of manufacturing the same
HOYA CORP0 citations52
HOYA MAGNETICS SINGAPORE PTE
5 patentsUS7208236B2Apr 24, 2007
Magnetic recording medium with multi-portion carbon-based protection layer, and apparatus thereof
HOYA MAGNETICS SINGAPORE PTE75 citations98
US6946191B2Sep 20, 2005
Magnetic recording medium
HOYA MAGNETICS SINGAPORE PTE73 citations98
US6916558B2Jul 12, 2005
Magnetic disk using a glass substrate
HOYA MAGNETICS SINGAPORE PTE76 citations97
US7169487B2Jan 30, 2007
Magnetic recording medium
HOYA MAGNETICS SINGAPORE PTE70 citations96
US7081308B2Jul 25, 2006
Magnetic recording medium
HOYA MAGNETICS SINGAPORE PTE0 citations51
WD MEDIA SINGAPORE PTE LTD
4 patentsUS8367228B2Feb 5, 2013
Magnetic recording medium having patterned auxiliary recording layer and method for manufacturing such magnetic recording medium
WD MEDIA SINGAPORE PTE LTD74 citations98
US7833639B2Nov 16, 2010
Magnetic recording medium and method for manufacturing magnetic recording medium
WD MEDIA SINGAPORE PTE LTD81 citations98
US7983003B2Jul 19, 2011
Magnetic recording medium having soft magnetic layer and perpendicular magnetic recording layer
WD MEDIA SINGAPORE PTE LTD69 citations97
US7955723B2Jun 7, 2011
Magnetic recording medium substrate and perpendicular magnetic recording medium
WD MEDIA SINGAPORE PTE LTD69 citations97