LexDanaLexDanabeta
Inventor

Iwao Okamoto

Inventor
Kawasaki, JP

Overview

44→
Patents
1989–2017
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 44 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer39%
Y10TTechnical subjects covered by former us classification28%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests24%
B82YSpecific uses or applications of nanostructures3%
C23CCoating metallic material2%
C04BLime, magnesia1%
G01NInvestigating or analysing materials by determining their chemical or physical properties1%
G01RMeasuring electric variables1%
H01FMagnets1%
H02NElectric machines not otherwise provided for1%
PatentTitleYear
9,548,073'Systems and methods for providing high performance soft magnetic underlayers for magnetic recording media'20179,472,227'Perpendicular magnetic recording media and methods for producing the same'20169,431,045'Magnetic seed layer used with an unbalanced soft underlayer'20169,042,053'Thermally stabilized perpendicular magnetic recording medium'20158,922,936'Apparatus of single write magnetic disc'20148,559,131'Perpendicular magnetic recording media and magnetic disc apparatus'20137,927,725'Magnetic recording medium, production method thereof and magnetic disc apparatus'20117,625,643'Magnetic recording medium, magnetic storage apparatus and recording method'20097,435,489'Magnetic recording medium, magnetic storage apparatus and recording method'20087,271,984'Magnetic recording medium having at least two coupled magnetic layers, magnetic storage apparatus and recording method'20077,115,330'Magnetic recording medium with CR <110> preferred growth along a predetermined direction, method of producing the same and magnetic storage apparatus'20067,079,340'Apparatus and method of measuring write magnetic field of recording head'20066,905,781'Magnetic recording medium with Cr<110> preferred growth along a predetermined direction, method of producing the same and magnetic storage apparatus'20056,881,496'Antiferromagnetically coupled magnetic recording medium possessing three coupled magnetic layers and magnetic storage apparatus'20056,828,047'Magnetic recording medium and magnetic storage apparatus'20046,821,652'Magnetic recording medium and magnetic storage apparatus'2004RE038587'Magnetic recording medium'20046,753,101'Magnetic recording medium, magnetic storage apparatus, recording method and method of producing magnetic recording medium'20046,740,383'Magnetic recording medium possessing a ratio of Hc(perpendicular) to Hc(horizontal) that is not more than 0.22 and magnetic recording disk device'20046,689,496'Magnetic recording medium, method of producing magnetic recording medium, and magnetic storage apparatus'20046,689,495'Magnetic recording medium and magnetic storage apparatus'20046,677,051'Magnetic recording medium with dual magnetic layers having specific composition requirements and a magnetic storage apparatus'20046,645,646'Magnetic recording medium and magnetic storage apparatus'20036,613,460'Magnetic recording medium and magnetic storage apparatus'20036,602,612'Magnetic recording medium and magnetic storage apparatus'20036,562,481'Magnetic storage medium'20036,562,489'Magnetic recording medium and magnetic storage apparatus'20036,551,728'Magnetic recording medium and magnetic storage apparatus'20036,541,104'Magnetic recording medium and a magnetic recording device'20036,534,204'Magnetic storage medium'20036,534,205'Magnetic storage medium'20036,506,508'Magnetic recording medium, method of production and magnetic storage apparatus'20036,147,488'Measurement method of time dependent magnetic remanence in a recording medium'20006,129,981'Magnetic recording medium and magnetic recording disk device'20006,071,607'Magnetic recording medium and magnetic disk device'20006,020,060'Magnetic recording medium, process for producing the same and magnetic disk device'20005,986,836'Magnetic recording method and device'19995,900,323'Magnetic recording medium and magnetic recording drive'19995,843,569'Magnetic recording medium and device'19985,774,783'Magnetic recording medium'19985,645,898'Method for manufacturing a magnetic recording member'19975,523,639'Electrostatic actuator having ferroelectrics in which residual dielectric polarization is formed'19965,164,349'Electromagnetic effect material'19924,814,239'Vertical magnetic recording medium and method of manufacturing the same'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1992Based in Yamaguchi, JP· patent location history
1996–2009Patents assigned to FUJITSU LTD (35)· patent assignee history
1996–2006Based in Kawasaki, JP· patent location history
1997–1999Based in Kanagawa, JP· patent location history
2005–2011Based in Higashine, JP· patent location history
2013–2016Patents assigned to OKAMOTO IWAO (3)· patent assignee history
2013–2014Patents assigned to MASUDA DAISUKE (2)· patent assignee history
2013–2014Patents assigned to SAITO CHIYO (2)· patent assignee history
2013–2017Based in Singapore, SG· patent location history
2015–2017Patents assigned to WD MEDIA LLC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJITSU LTD351996–2009
OKAMOTO IWAOself32013–2016
WD MEDIA LLC32015–2017
MASUDA DAISUKE22013–2014
SAITO CHIYO22013–2014
Locations
LocationPatentsSpan
Kawasaki, JP271996–2006
Higashine, JP62005–2011
Singapore, SG52013–2017
Kanagawa, JP31997–1999
Yamaguchi, JP21989–1992