Inventor
FUJII RYUJI
HK68 patents
⚠️ This page may combine multiple inventors who share the name “FUJII RYUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SAE MAGNETICS HK LTD
23 patentsUS7326102B2Feb 5, 2008
Apparatus for lapping thin film magnetic heads
SAE MAGNETICS HK LTD11 citations83
US8861318B1Oct 14, 2014
Thermally assisted magnetic write head, and method of manufacturing the same
SAE MAGNETICS HK LTD13 citations82
US8588040B1Nov 19, 2013
Thermally assisted magnetic head slider, head gimbal assembly, and hard disk drive with the same, and manufacturing method thereof
SAE MAGNETICS HK LTD18 citations82
US7281317B2Oct 16, 2007
Manufacturing method of flying magnetic head slider
SAE MAGNETICS HK LTD13 citations82
US6679760B2Jan 20, 2004
Lapping method of magnetic head slider and lapping method of bar
SAE MAGNETICS HK LTD13 citations82
US10061084B1Aug 28, 2018
Coupling structure of optical components and coupling method of the same
SAE MAGNETICS HK LTD8 citations81
US8638645B1Jan 28, 2014
Thermally assisted magnetic head slider having plasmon unit formed with a recess
SAE MAGNETICS HK LTD15 citations81
US9666218B1May 30, 2017
Thermal assisted magnetic head provided with light detector that detects reflected light
SAE MAGNETICS HK LTD2 citations73
US9437227B1Sep 6, 2016
Thermally assisted magnetic recording head slider, method of manufacturing the same, head gimbal assembly, and hard disk drive
SAE MAGNETICS HK LTD6 citations73
US9489972B2Nov 8, 2016
Light source unit, heat-assisted magnetic recording head using the same, and light source for light source unit
SAE MAGNETICS HK LTD3 citations72
US8902546B1Dec 2, 2014
Head stack assembly with light shielding structure, and disk drive unit with the same
SAE MAGNETICS HK LTD4 citations72
US9163939B2Oct 20, 2015
Method of manufacturing thermally-assisted magnetic head and alignment apparatus thereof
SAE MAGNETICS HK LTD4 citations71
US7153198B2Dec 26, 2006
Fixture for slider lapping, lapping device and lapping method
SAE MAGNETICS HK LTD7 citations71
US10490212B2Nov 26, 2019
Row bar and wafer for forming magnetic heads
SAE MAGNETICS HK LTD3 citations64
US11817678B2Nov 14, 2023
Semiconductor laser and laser radar device having the semiconductor laser
SAE MAGNETICS HK LTD0 citations62
US11127424B1Sep 21, 2021
Thermally-assisted magnetic recording head having active layer with quantum dot structure
SAE MAGNETICS HK LTD1 citations62
US7746597B2Jun 29, 2010
Slider having protective films of differing hydrogen content
SAE MAGNETICS HK LTD4 citations62
US11887638B1Jan 30, 2024
Laser diode, thermally assisted magnetic head, head gimbal assembly, hard disk drive and method of manufacturing a head gimbal assembly
SAE MAGNETICS HK LTD0 citations61
US8801945B2Aug 12, 2014
Write element, thermally assisted magnetic head slider, head gimbal assembly, hard disk drive with the same, and manufacturing method thereof
SAE MAGNETICS HK LTD2 citations59
US12400679B1Aug 26, 2025
Thermally assisted magnetic head, head gimbal assembly, and hard disk drive
SAE MAGNETICS HK LTD0 citations57
US7189150B2Mar 13, 2007
System and method for edge blending hard drive head sliders
SAE MAGNETICS HK LTD3 citations57
US10311903B2Jun 4, 2019
Method and system of testing slider body of thermally-assisted magnetic head
SAE MAGNETICS HK LTD1 citations56
US7464456B2Dec 16, 2008
Slider separating method
SAE MAGNETICS HK LTD4 citations54
SASAKI YOSHITAKA
14 patentsUS8456968B1Jun 4, 2013
Thermally-assisted magnetic recording head having dual heat sink layers
SASAKI YOSHITAKA23 citations93
US8867170B1Oct 21, 2014
Multilayer plasmon generator
SASAKI YOSHITAKA16 citations84
US8830799B1Sep 9, 2014
Near-field light generator and thermally-assisted magnetic recording head
SASAKI YOSHITAKA13 citations84
US8760809B1Jun 24, 2014
Thermally-assisted magnetic recording head having a plasmon generator
SASAKI YOSHITAKA14 citations84
US8711663B1Apr 29, 2014
Plasmon generator includes three metal layers for thermally-assisted magnetic recording
SASAKI YOSHITAKA11 citations84
US8509038B1Aug 13, 2013
Near-field light generator and thermally-assisted magnetic recording head
SASAKI YOSHITAKA7 citations84
US8498183B1Jul 30, 2013
Thermally-assisted magnetic recording head having a waveguide and a return path section
SASAKI YOSHITAKA8 citations84
US8493821B1Jul 23, 2013
Thermally-assisted magnetic recording head including a shield
SASAKI YOSHITAKA15 citations84
US9208806B2Dec 8, 2015
Near-field light generator including a waveguide and a plasmon generator
SASAKI YOSHITAKA4 citations73
US8988975B1Mar 24, 2015
Thermally assisted magnetic head, method of manufacturing the same, head gimbal assembly, and hard disk drive
SASAKI YOSHITAKA6 citations73
US8861138B2Oct 14, 2014
Multilayer plasmon generator
SASAKI YOSHITAKA3 citations63
US8848494B2Sep 30, 2014
Plasmon generator including two portions made of different metals
SASAKI YOSHITAKA3 citations63
US8619518B1Dec 31, 2013
Thermally-assisted magnetic recording head having expanded near-field light generating layer and method of manufacture
SASAKI YOSHITAKA4 citations63
US9236082B2Jan 12, 2016
Near-field light generator including a waveguide and a plasmon generator
SASAKI YOSHITAKA1 citations52
SHIMAZAWA KOJI
5 patentsUS8248897B2Aug 21, 2012
Method for manufacturing thermally-assisted magnetic recording head comprising light source unit and slider
SHIMAZAWA KOJI28 citations93
US8149653B2Apr 3, 2012
Light source unit for thermally-assisted magnetic recording capable of monitoring of light output
SHIMAZAWA KOJI32 citations93
US8254214B2Aug 28, 2012
Light source unit for thermally-assisted magnetic recording including dual electrode layers connected to a unit electrode
SHIMAZAWA KOJI11 citations84
US8248895B2Aug 21, 2012
Method for manufacturing thermally-assisted magnetic recording head comprising light source unit and slider
SHIMAZAWA KOJI11 citations84
US8509036B2Aug 13, 2013
Method of burn-in testing for thermally assisted head
SHIMAZAWA KOJI4 citations60
TDK CORP
4 patentsUS8811127B1Aug 19, 2014
Magnetic head comprising recording part, reading part, heater for expansion of the recording part, and heater for expansion of the reading part
TDK CORP17 citations84
US6452750B1Sep 17, 2002
Slider including a rail having a concave end and method of manufacturing same
TDK CORP11 citations74
US6398623B1Jun 4, 2002
Processing method of device and processing method of slider
TDK CORP9 citations74
US8384405B2Feb 26, 2013
Method for performing burn-in test
TDK CORP3 citations62
FUJII RYUJI
3 patentsUS8537643B2Sep 17, 2013
Light source chip and a thermally assisted head with the same, and manufacturing methods thereof
FUJII RYUJI2 citations57
US8503493B1Aug 6, 2013
System and method for cooling a semiconductor light source bar during burn-in testing
FUJII RYUJI3 citations54
US8614863B2Dec 24, 2013
Row bar with smart sensor for forming sliders and method of manufacturing slider
FUJII RYUJI3 citations52
HEADWAY TECHNOLOGIES INC
1 patentShowing the top 50 of 68 patents by PatentIndex Score.