P

Inventor

OIKAWA SOICHI

JP56 patents
⚠️ This page may combine multiple inventors who share the name “OIKAWA SOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOSHIBA KK

23 patents
US7470474B2Dec 30, 2008

Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus including both oxide and non-oxide perpendicular magnetic layers

TOSHIBA KK48 citations96
US7166376B2Jan 23, 2007

Magnetic recording medium including a high-magnetostriction layer and magnetic recording/reproducing apparatus

TOSHIBA KK23 citations93
US6754020B1Jun 22, 2004

Magnetic recording media and magnetic recording/reproduction apparatuses

TOSHIBA KK41 citations92
US6713197B2Mar 30, 2004

Perpendicular magnetic recording medium and magnetic recording apparatus

TOSHIBA KK30 citations92
US7494725B2Feb 24, 2009

Magnetic recording medium, method for manufacturing recording medium and magnetic recording apparatus

TOSHIBA KK9 citations84
US6846581B2Jan 25, 2005

Perpendicular magnetic recording medium and magnetic recording-reproducing apparatus using the same

TOSHIBA KK14 citations84
US6548194B2Apr 15, 2003

Perpendicular magnetic recording medium and a magnetic reproducing apparatus

TOSHIBA KK17 citations84
US6620533B2Sep 16, 2003

Magnetic recording medium

TOSHIBA KK14 citations83
US7431999B2Oct 7, 2008

Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus

TOSHIBA KK7 citations74
US7416794B2Aug 26, 2008

Magnetic recording medium, method for manufacturing recording medium and magnetic recording apparatus

TOSHIBA KK7 citations74
US10490736B2Nov 26, 2019

Magnetic memory

TOSHIBA KK2 citations73
US7901801B2Mar 8, 2011

Perpendicular magnetic recording medium and magnetic recording apparatus

TOSHIBA KK5 citations63
US7666531B2Feb 23, 2010

Perpendicular magnetic recording medium and magnetic recording/reproduction apparatus

TOSHIBA KK2 citations63
US7622204B2Nov 24, 2009

Magnetic recording medium and magnetic recording apparatus

TOSHIBA KK2 citations63
US7138194B2Nov 21, 2006

Magnetic recording medium, method of manufacture therefor, and magnetic read/write apparatus

TOSHIBA KK6 citations63
US7056606B2Jun 6, 2006

Magnetic recording medium, method manufacture therefor, and apparatus for magnetic reproducing and reproducing recordings

TOSHIBA KK5 citations63
US11017826B2May 25, 2021

Magnetic memory device

TOSHIBA KK0 citations62
US10897007B2Jan 19, 2021

Magnetic memory device

TOSHIBA KK0 citations62
US10374150B2Aug 6, 2019

Magnetic memory device

TOSHIBA KK1 citations62
US10360960B2Jul 23, 2019

Magnetic memory device

TOSHIBA KK1 citations62
US10262711B2Apr 16, 2019

Magnetic memory

TOSHIBA KK1 citations62
US10734053B2Aug 4, 2020

Magnetic memory device

TOSHIBA KK0 citations52
US10453513B2Oct 22, 2019

Magnetic memory device

TOSHIBA KK0 citations52

SHOWA DENKO KK

11 patents
US6699600B2Mar 2, 2004

Magnetic recording medium, method of manufacture therefor, and apparatus for magnetic recording and reproducing recordings

SHOWA DENKO KK38 citations93
US6682826B2Jan 27, 2004

Magnetic recording medium, method of manufacturing therefor, and magnetic read/write apparatus

SHOWA DENKO KK40 citations92
US7601445B2Oct 13, 2009

Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus

SHOWA DENKO KK10 citations84
US7132176B2Nov 7, 2006

Perpendicular magnetic recording medium and magnetic recording/reproduction apparatus

SHOWA DENKO KK12 citations84
US7105239B2Sep 12, 2006

Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the same

SHOWA DENKO KK13 citations84
US7867638B2Jan 11, 2011

Magnetic recording medium, method for producing thereof, and magnetic recording and reproducing apparatus

SHOWA DENKO KK6 citations74
US7141316B2Nov 28, 2006

Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus

SHOWA DENKO KK9 citations74
US6942936B2Sep 13, 2005

Perpendicular magnetic recording medium and magnetic recording/reproduction apparatus

SHOWA DENKO KK11 citations74
US6902835B2Jun 7, 2005

Perpendicular magnetic recording medium and magnetic recording apparatus

SHOWA DENKO KK8 citations74
US7901803B2Mar 8, 2011

Perpendicular magnetic recording medium, manufacturing method therefor, and magnetic read/write apparatus using the same

SHOWA DENKO KK1 citations52
US7781081B2Aug 24, 2010

Magnetic recording medium, manufacturing method for the magnetic recording medium, and magnetic read/write apparatus

SHOWA DENKO KK1 citations52

KIOXIA CORP

3 patents
US12200945B2Jan 14, 2025

Memory device

KIOXIA CORP0 citations52
US12133472B2Oct 29, 2024

Magnetic storage device

KIOXIA CORP0 citations52
US11980104B2May 7, 2024

Magnetic memory device

KIOXIA CORP0 citations52

ZHANG KUNLIANG

2 patents
US8064244B2Nov 22, 2011

Thin seeded Co/Ni multilayer film with perpendicular anisotropy for spintronic device applications

ZHANG KUNLIANG102 citations99
US8488373B2Jul 16, 2013

Spin injection layer robustness for microwave assisted magnetic recording

ZHANG KUNLIANG24 citations93

IWASAKI HITOSHI

2 patents
US8320079B2Nov 27, 2012

Magnetic head assembly and magnetic recording/reproducing apparatus

IWASAKI HITOSHI72 citations97
US8467148B2Jun 18, 2013

Spin torque oscillator, magnetic recording head, magnetic head assembly and magnetic recording apparatus

IWASAKI HITOSHI16 citations83

YAMADA KENICHIRO

2 patents
US8472140B2Jun 25, 2013

Spin oscillator or magnetic recorder including multiple injection layers in the magnetic recording head

YAMADA KENICHIRO24 citations92
US8553359B2Oct 8, 2013

Magnetic recording head and magnetic recording/reproducing apparatus using the same

YAMADA KENICHIRO7 citations84

FUNAYAMA TOMOMI

1 patent
US8081397B2Dec 20, 2011

Magnetic head assembly and magnetic recording apparatus

FUNAYAMA TOMOMI30 citations92

SHIMIZU MARIKO

1 patent
US8238058B2Aug 7, 2012

Magnetic recording head, magnetic head assembly, and magnetic recording apparatus

SHIMIZU MARIKO23 citations91

TAKAGISHI MASAYUKI

1 patent
US8446691B2May 21, 2013

Magnetic recording device

TAKAGISHI MASAYUKI16 citations83

KANUSHIKI KAISHA TOSHIBA

1 patent
US7695832B2Apr 13, 2010

Perpendicular magnetic recording medium and perpendicular magnetic recording/reproducing apparatus

KANUSHIKI KAISHA TOSHIBA8 citations83

TOSHIBA CORP

1 patent
US6884519B2Apr 26, 2005

Magnetic recording medium, including an HCP structured Ni-alloy control film method of manufacture therefor, and magnetic read/write apparatus

TOSHIBA CORP11 citations73

OIKAWA SOICHI

1 patent
US8817419B2Aug 26, 2014

Magnetic recording head and magnetic recording apparatus

OIKAWA SOICHI2 citations60

SAKURAI MASATOSHI

1 patent
US8748017B2Jun 10, 2014

Magnetic recording medium

SAKURAI MASATOSHI1 citations52

Showing the top 50 of 56 patents by PatentIndex Score.