LexDanaLexDanabeta
Inventor

Ryuji Fujii

Inventor
Hong Kong, CN

Overview

61→
Patents
2002–2020
Patent span
Physics
Primary field (CPC G)

Patents· 61 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 transducer52%
Y10TTechnical subjects covered by former us classification19%
B24BMachines, devices, or processes for grinding or polishing7%
G02BOptical elements, systems or apparatus7%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light3%
B23KSoldering or unsoldering2%
G01RMeasuring electric variables2%
B82YSpecific uses or applications of nanostructures1%
C23CCoating metallic material1%
G01BMeasuring length, thickness or similar linear dimensions1%
PatentTitleYear
10,811,042Disk drive thermally assisted magnetic recording head having a slider and a tilted light incident surface202010,490,212Row bar and wafer for forming magnetic heads201910,311,903Method and system of testing slider body of thermally-assisted magnetic head201910,061,084Coupling structure of optical components and coupling method of the same20189,840,767'Manufacturing method for a head slider coated with DLC'20179,666,218'Thermal assisted magnetic head provided with light detector that detects reflected light'20179,489,972'Light source unit, heat-assisted magnetic recording head using the same, and light source for light source unit'20169,437,226'Method of testing thermally-assisted magnetic head'20169,437,227'Thermally assisted magnetic recording head slider, method of manufacturing the same, head gimbal assembly, and hard disk drive'20169,275,658'Thermally-assisted magnetic recording head including a plasmon generator'20169,236,082'Near-field light generator including a waveguide and a plasmon generator'20169,208,806'Near-field light generator including a waveguide and a plasmon generator'20159,190,084'Thermal assisted magnetic recording head with protrusion on leading side of plasmon generator'20159,163,939'Method of manufacturing thermally-assisted magnetic head and alignment apparatus thereof'20159,013,964'Thermally-assisted magnetic recording head having a plasmon generator'20158,988,975'Thermally assisted magnetic head, method of manufacturing the same, head gimbal assembly, and hard disk drive'20158,912,042'Manufacturing method for layered chip packages'20148,902,546'Head stack assembly with light shielding structure, and disk drive unit with the same'20148,867,170'Multilayer plasmon generator'20148,861,318'Thermally assisted magnetic write head, and method of manufacturing the same'20148,861,138'Multilayer plasmon generator'20148,848,494'Plasmon generator including two portions made of different metals'20148,830,799'Near-field light generator and thermally-assisted magnetic recording head'20148,811,130'Method of manufacturing thermally-assisted magnetic head'20148,811,127'Magnetic head comprising recording part, reading part, heater for expansion of the recording part, and heater for expansion of the reading part'20148,801,945'Write element, thermally assisted magnetic head slider, head gimbal assembly, hard disk drive with the same, and manufacturing method thereof'20148,760,809'Thermally-assisted magnetic recording head having a plasmon generator'20148,743,665'Light source chip and a thermally assisted head with the same, and manufacturing methods thereof'20148,711,663'Plasmon generator includes three metal layers for thermally-assisted magnetic recording'20148,638,645'Thermally assisted magnetic head slider having plasmon unit formed with a recess'20148,619,518'Thermally-assisted magnetic recording head having expanded near-field light generating layer and method of manufacture'20138,614,863'Row bar with smart sensor for forming sliders and method of manufacturing slider'20138,588,040'Thermally assisted magnetic head slider, head gimbal assembly, and hard disk drive with the same, and manufacturing method thereof'20138,537,643'Light source chip and a thermally assisted head with the same, and manufacturing methods thereof'20138,509,036'Method of burn-in testing for thermally assisted head'20138,509,038'Near-field light generator and thermally-assisted magnetic recording head'20138,503,493'System and method for cooling a semiconductor light source bar during burn-in testing'20138,498,183'Thermally-assisted magnetic recording head having a waveguide and a return path section'20138,495,812'Method of manufacturing magnetic head slider'20138,493,821'Thermally-assisted magnetic recording head including a shield'20138,456,968'Thermally-assisted magnetic recording head having dual heat sink layers'20138,384,405'Method for performing burn-in test'20138,254,214'Light source unit for thermally-assisted magnetic recording including dual electrode layers connected to a unit electrode'20128,248,895'Method for manufacturing thermally-assisted magnetic recording head comprising light source unit and slider'20128,248,897'Method for manufacturing thermally-assisted magnetic recording head comprising light source unit and slider'20128,166,630'Magnetic head slider manufacturing method'20128,149,653'Light source unit for thermally-assisted magnetic recording capable of monitoring of light output'20128,040,375'Method and apparatus for inspecting slider using moving stage'20117,768,281'Probe assembly for lapping a bar using a patterned probe'20107,746,597'Slider having protective films of differing hydrogen content'20107,739,786'Apparatus for manufacturing magnetic head slider'20107,716,814'Method of manufacturing magnetic head, and magnetic head substructure'20107,464,456'Slider separating method'20087,435,163'Grinding sheet and grinding method'20087,326,102'Apparatus for lapping thin film magnetic heads'20087,281,317'Manufacturing method of flying magnetic head slider'20077,189,150'System and method for edge blending hard drive head sliders'20077,153,198'Fixture for slider lapping, lapping device and lapping method'20066,679,760'Lapping method of magnetic head slider and lapping method of bar'20046,452,750'Slider including a rail having a concave end and method of manufacturing same'20026,398,623'Processing method of device and processing method of slider'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002Based in Tokyo, JP· patent location history
2004–2020Patents assigned to SAE MAGNETICS HK LTD (52)· patent assignee history
2004–2008Based in Kwai Chung, HK· patent location history
2007Based in Kwai Fung Crescent, HK· patent location history
2008–2020Based in Hong Kong, CN· patent location history
2008–2012Based in Shatin, CN· patent location history
2010–2016Patents assigned to HEADWAY TECHNOLOGIES INC (20)· patent assignee history
2012–2016Patents assigned to FUJII RYUJI (27)· patent assignee history
2012–2016Patents assigned to SASAKI YOSHITAKA (19)· patent assignee history
2013–2016Patents assigned to ITO HIROYUKI (16)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SAE MAGNETICS HK LTD522004–2020
FUJII RYUJIself272012–2016
HEADWAY TECHNOLOGIES INC202010–2016
SASAKI YOSHITAKA192012–2016
ITO HIROYUKI162013–2016
Locations
LocationPatentsSpan
Hong Kong, CN502008–2020
Shatin, CN42008–2012
Kwai Chung, HK32004–2008
Tokyo, JP22002
Kwai Fung Crescent, HK12007