LexDanaLexDanabeta
Inventor

Katsuro Watanabe

Inventor
Odawara, JP

Overview

63→
Patents
1977–2017
Patent span
Physics
Primary field (CPC G)

Patents· 63 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 transducer46%
B82YSpecific uses or applications of nanostructures23%
G01RMeasuring electric variables8%
Y10TTechnical subjects covered by former us classification8%
H01FMagnets3%
H10BElectronic memory devices3%
H10NElectric solid-state devices not otherwise provided for3%
G11CStatic stores2%
F16CShafts1%
F16HGearing1%
PatentTitleYear
9,672,846'STO bias control for MAMR head reliability'20179,437,222'Spin torque oscillator with high spin torque efficiency and reliability'20169,355,655'Magnetic capping layer structure for a spin torque oscillator'20169,330,687'Microwave-assisted recording head with stable oscillation'20169,275,672'Magnetic head, magnetic recording method and apparatus for controlling magnetic head with spin torque oscillator in a disk drive'20169,230,574'Magnetoresistive head with a CPP structure having suppressed side reading'20169,230,573'Magnetic recording head with non-magnetic bump structure formed on spin torque oscillator'20169,202,484'Magnetic head provided spin torque oscillator with low drive voltage for microwave assisted magnetic recording'20159,129,621'MAMR head with inclined MAMR head body'20159,007,721'Microwave assisted magnetic recording head having spin torque oscillator, and magnetic recording apparatus'20158,953,282'Magnetic head, and magnetic storage apparatus'20158,937,789'Microwave assisted magnetic recording head and magnetic data storage apparatus'20158,917,481'High frequency magnetic field assisted magnetic recording head, and method of manufacturing same'20148,883,327'Microwave assisted magnetic recording medium and information recording apparatus using the same'20148,854,768'Magnetic head and magnetic recording/reproducing apparatus'20148,837,086'Magnetic recording head, manufacturing method thereof, and magnetic disk device'20148,830,635'Magnetic head having shield layer(s) with low coefficient of thermal expansion and magnetic storage apparatus having same'20148,830,627'Magnetic head, method for producing the magnetic head, and magnetic recording/reproducing apparatus'20148,824,103'Magnetic recording head and magnetic recording apparatus'20148,537,503'CPP structure magnetoresistive head'20138,472,135'Microwave-assisted magnetic recording head having a current confinement structure'20138,432,646'Magnetic detection element'20138,373,943'Magnetic head having a multilayer magnetic film and method for producing the same'20138,355,224'Sensor shape of a CPP magnetic head for improving the MR ratio'20138,335,057'CPP magnetoresistive head'20128,270,123'Vertical-current-type reproducing magnetic head and method of manufacturing the same'20128,184,406'Thin film magnetic head having an angled insulating film'20128,149,548'Magnetic head and manufacturing method thereof'20127,944,651'CPP-type magnetoresistive effect head and method of manufacturing the same'20117,859,799'Magnetoresistive head and a manufacturing method thereof'20107,735,213'Method for fabricating magnetic head slider'20107,561,384'Magneto-resistive sensor having small track width and sensor height using stopper layer'20097,505,232'Magnetic head with side shield and manufacturing method thereof'20097,446,981'Magnetic head, fabrication process of magnetic head, and magnetic disk storage apparatus mounting magnetic head'20087,333,301'Magnetic recording head and method for manufacturing'20087,280,321'Magnetoresistive head'20077,274,542'Magnetic sensor having a free layer containing a single magnetic domain'20077,154,713'CPP-type magnetic head with less deformation and a magnetic recording/reproducing system using the same'20067,092,217'Magnetoresistive head'20067,089,648'Method for fabricating a magnetoresistive head'20067,031,119'CPP-type magnetic head with less deformation and a magnetic recording/reproducing system using the same'20066,999,270'Magnetic head and a magnetic disk drive'20066,934,128'Magnetic head and magnetic disk drive'20056,903,966'Semiconductor device'20056,795,277'Magnetic head and magnetic disk drive'20046,778,363'Magnetoresistive head having longitudinal biasing by providing undirectional magnetic anisotropy'20046,771,535'Semiconductor device'20046,728,081'Magnetic head and magnetic disk apparatus'20046,693,774'Magnetoresistive sensor and magnetic storage apparatus'20046,690,163'Magnetic sensor'20046,671,136'Magnetic head and magnetic disk apparatus'20036,643,105'Magnetic head having magnetic shield layers'20036,636,391'Magnetoresistive sensor, magnetic head and magnetic disk apparatus'20036,573,586'Semiconductor device'20036,560,135'Magnetic semiconductor memory apparatus and method of manufacturing the same'20036,456,466'Magnetic head with shield layer having discontinuous multi-layer or mixed layer and magnetic recording apparatus utilizing the magnetic head'20026,172,859'Magnetoresistive head and magnetic disk apparatus'20016,157,526'Magnetoresistive head and magnetic disk apparatus'20006,130,797'Magnetic recorder and magnetooptical recorder'20006,088,196'Magnetoresistive head and manufacturing method therefor'20005,995,338'Magnetoresistive head and magnetic disk apparatus'19995,872,690'Magnetic transducer and magnetic recording device utilizing material in which undirectional anisotropy can be formed'19994,025,132'Bearing unit'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2016Patents assigned to HITACHI LTD (31)· patent assignee history
1999–2001Based in Hitachi, JP· patent location history
2002–2007Based in Odawara, JP· patent location history
2004–2012Patents assigned to HITACHI GLOBAL STORAGE TECH (13)· patent assignee history
2009–2016Based in Ibaraki, JP· patent location history
2010–2013Patents assigned to HITACHI GLOBAL STORAGE TECH NL (6)· patent assignee history
2012–2016Patents assigned to WATANABE KATSURO (13)· patent assignee history
2013–2017Patents assigned to HGST Netherlands BV (12)· patent assignee history
2013–2014Based in Hitachiohta, JP· patent location history
2014–2017Based in Hitachiota, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD311999–2016
HITACHI GLOBAL STORAGE TECH132004–2012
WATANABE KATSUROself132012–2016
HGST Netherlands BV122013–2017
HITACHI GLOBAL STORAGE TECH NL62010–2013
Locations
LocationPatentsSpan
Odawara, JP182002–2007
Ibaraki, JP132009–2016
Hitachiota, JP92014–2017
Hitachi, JP61999–2001
Hitachiohta, JP42013–2014