ClassID:

197740

G11B5/235 - CPC Classification

Classification description:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor; Structure or manufacture of heads, e.g. inductive; Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features; Gap features Selection of material for gap filler

Recent Application in this class:
#1
20260120715
2026-04-30

Spin-Orbit Torque Assisted Magnetic Write Head Structure For Perpendicular Magnetic Recording

#2
20260055020
2026-02-26

GLASS FOR MAGNETIC RECORDING MEDIUM SUBSTRATE OR FOR GLASS SPACER TO BE USED IN MAGNETIC RECORDING/REPRODUCING DEVICE, MAGNETIC RECORDING MEDIUM SUBSTRATE, MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING/REPRODUCING APPARATUS

#3
20250366376
2025-11-27

Buffer Layers And Interlayers That Promote BiSbx (012) Alloy Orientation For SOT And MRAM Devices

#4
20250329343
2025-10-23

Perpendicular Magnetic Recording Writer with Tunable Two Bias Branches

#5
20250322844
2025-10-16

Spin Wave Assisted MAMR Recording Head

#6
20250218456
2025-07-03

Magnetic Heads Having Low Magnetic Coercivity (Hc) and High Saturated Magnetic Flux Density (Bs) in Ferromagnetic (FM) Layer(s) or Shield(s) With Minimized Saturation

#7
20250182781
2025-06-05

Perpendicular Magnetic Recording Writer With Tunable Pole Side Bridge Design

#8
20250111863
2025-04-03

Spin-Orbit Torque Assisted Magnetic Write Head Structure For Perpendicular Magnetic Recording

#9
20250087236
2025-03-13

Dual FGL and Dual SPL Spintronic Device To Reduce Perpendicular Field At Writing Location

#10
20250087235
2025-03-13

Spintronic Device Comprising Dual FGL and Dual SPL To Reduce Perpendicular Field At Writing Location

#11
20250037736
2025-01-30

MAGNETIC RECORDING DEVICE

#12
20250006221
2025-01-02

Higher Areal Density Non-Local Spin Orbit Torque (SOT) Writer with Topological Insulator Materials

#13
20240371402
2024-11-07

Magnetic Flux Guiding Device With Spin Torque Oscillator (STO) Film Having Negative Spin Polarization Layers In Assisted Writing Application

#14
20240355353
2024-10-24

MAGNETIC RECORDING HEAD WITH CURRENT PATH BETWEEN TRAILING SHIELD AND LEADING SHIELD FOR IMPROVED RESISTANCE

#15
20240347073
2024-10-17

Produce thinner DTS and adjustable capacitance for TDMR heads

#16
20240296863
2024-09-05

Magnetic head with multilayer configuration between magnetic poles and magnetic recording device

#17
20240296862
2024-09-05

Magnetic head with multilayer configuration between magnetic poles and magnetic recording device

#18
20240296861
2024-09-05

Magnetic head with multilayer configuration between magnetic poles and magnetic recording device

#19
20240296860
2024-09-05

Perpendicular Magnetic Recording Writer with Tunable Two Bias Branches

#20
20240286946
2024-08-29

GLASS FOR MAGNETIC RECORDING MEDIUM SUBSTRATE OR FOR GLASS SPACER TO BE USED IN MAGNETIC RECORDING/REPRODUCING DEVICE, MAGNETIC RECORDING MEDIUM SUBSTRATE, MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING/REPRODUCING APPARATUS

#21
20240233758
2024-07-11

Perpendicular Magnetic Recording Writer With Tunable Pole Side Bridge Design

#22
20240144963
2024-05-02

Spintronic device comprising dual FGL and dual SPL to reduce perpendicular field at writing location

#23
20240144962
2024-05-02

Dual FGL and dual SPL spintronic device to reduce perpendicular field at writing location

#24
20240144961
2024-05-02

Magnetic recording heads having one or more dusting layers for magnetic recording devices

#25
20240135966
2024-04-25

Method to enhance spin torque layer performance in a spintronic device

#26
20240135965
2024-04-25

Perpendicular magnetic recording writer with tunable pole side bridge design

#27
20240135962
2024-04-25

MAGNETIC HEAD AND MAGNETIC RECORDING DEVICE

#28
20240112840
2024-04-04

Cobalt-boron (CoB) layer for magnetic recording devices, memory devices, and storage devices

#29
20240046959
2024-02-08

Magnetic head with stacked body configurations and magnetic recording device including the same

#30
20230410841
2023-12-21

Spin torque oscillator with enhanced spin polarizer

#31
20230386721
2023-11-30

Buffer Layers And Interlayers That Promote BiSbx (012) Alloy Orientation For SOT And MRAM Devices

#32
20230192530
2023-06-22

Glass for magnetic recording medium substrate or for glass spacer to be used in magnetic recording/reproducing device, magnetic recording medium substrate, magnetic recording medium, glass spacer to be used in magnetic recording/reproducing device, and magnetic recording/reproducing device

#33
20230178103
2023-06-08

Magnetic flux guiding device with spin torque oscillator (STO) film having negative spin polarization layers in assisted writing application

#34
20230062839
2023-03-02

Magnetic head with conductive non-magnetic layer contact configurations

#35
20230031273
2023-02-02

Magnetic head including multiple magnetic layers and magnetic recording device

#36
20220399035
2022-12-15

MAMR recording head with SAF trailing shield notch and/or bump

#37
20220343944
2022-10-27

Magnetic recording devices using virtual side shields for improved areal density capability

#38
20220335968
2022-10-20

Magnetic head with stacked body having specified compositions of magnetic and nonmagnetic layers thereof

#39
20220199113
2022-06-23

Writer with laterally graded spin layer MsT

#40
20220157335
2022-05-19

Magnetic recording device including a magnetic head including a stacked body between magnetic poles

#41
20220108715
2022-04-07

Energy assisted magnetic recording head having improved areal density capability

#42
20220093123
2022-03-24

Writer with laterally graded spin layer MsT

#43
20220005497
2022-01-06

Magnetic head with stacked body having non-magnetic layers and differing length magnetic layers

#44
20210407535
2021-12-30

Energy-assisted magnetic recording head with protective cap

#45
20210375312
2021-12-02

Magnetic recording device including magnetic head which includes a stacked body with controlled electrical resistance

#46
20210375308
2021-12-02

Magnetic head and magnetic recording device having magnetic layers and nonmagnetic layers between shield and magnetic pole

#47
20210217440
2021-07-15

Magnetic head including stacked body having plural of intermediate layers and magnetic recording device including same

#48
20210166724
2021-06-03

Magnetic recording device supplied with varying recording current

#49
20210142821
2021-05-13

Magnetic head and magnetic recording device with stacked body material configurations

#50
20210104257
2021-04-08

Magnetic head including stacked body with changing electrical resistance and magnetic recording device including same

#51
20210082458
2021-03-18

Spin orbital torque based microwave assisted magnetic recording with dual spin hall layers or wrap around spin hall layer

#52
20210074322
2021-03-11

Magnetic recording devices using virtual side shields for improved areal density capability

#53
20210056987
2021-02-25

Spin transfer torque oscillator (STO) with spin torque injection to a flux generating layer (FGL) from two sides

#54
20200349968
2020-11-05

MAMR writer with low resistance MAMR stack

#55
20200327902
2020-10-15

Spin torque layer in side gap for improved field and cross track field gradient

#56
20200327901
2020-10-15

Magnetic head and magnetic recording and reproducing device

#57
20200327900
2020-10-15

Magnetic recording write head with selected write gap current direction for minimization of cross-track interference

#58
20200294537
2020-09-17

Magnetic head and magnetic recording device having magnetic layers and non-magnetic layers between shield and magnetic pole

#59
20200294535
2020-09-17

Magnetic recording device and magnetic head

#60
20200286507
2020-09-10

Shared MAMR and HDI sensor/driver

#61
20200273491
2020-08-27

Tunnel magnetoresistive sensor with adjacent gap having chromium alloy seed layer and refractory material layer

#62
20200243108
2020-07-30

MAGNETIC HEAD AND DISK DEVICE HAVING THE SAME

#63
20200143826
2020-05-07

Tunnel magnetoresistive sensor having conductive ceramic layers

#64
20200090685
2020-03-19

Magnetic recording device supplied with varying recording current

#65
20200082845
2020-03-12

Magnetic head with conductive layer configurations between magnetic pole and shield and magnetic recording and reproducing device

#66
20200075047
2020-03-05

Magnetic head including first and second stacked bodies and current flow arrangements and magnetic recording and reproducing device

#67
20200075045
2020-03-05

Magnetic head with stacked body and insulating portion arrangement between magnetic pole and shield

#68
20200058322
2020-02-20

Magnetic head and magnetic recording and reproducing device

#69
20200005815
2020-01-02

Current-assisted magnetic recording write head with improved write gap structure

#70
20190348069
2019-11-14

Plating based pre-defined side shield and application in magnetic head

#71
20190267029
2019-08-29

Magnetic recording write head with selected write gap current direction for minimization of cross-track interference

#72
20190259412
2019-08-22

Spin transfer torque (STT) device with multilayer seed layers for magnetic recording and memory

#73
20190251992
2019-08-15

MAMR writer with low resistance MAMR stack

#74
20190251991
2019-08-15

Magnetic write head with current guiding layer

#75
20190244634
2019-08-08

Spin torque layer in side gap for improved field and cross track field gradient

#76
20190206428
2019-07-04

Method of forming a perpendicular magnetic recording (PMR) write head with patterned leading edge taper

#77
20190115047
2019-04-18

Magnetic recording head with specified thickness and saturation magnetic flux density products for STO magnetic layers

#78
20190066717
2019-02-28

Magnetic head and disk device having gap layers with different magnetic relative permeabilities

#79
20180330748
2018-11-15

PMR write head with patterned leading edge taper

#80
20180294010
2018-10-11

Switching period control of microwave assisted magnetic recording for pole erasure suppression

#81
20180247665
2018-08-30

Tunnel magnetoresistive sensor having leads supporting three dimensional current flow

#82
20180204589
2018-07-19

Magnetic head with spin torque oscillator connection configuration

#83
20180114539
2018-04-26

Magnetic recording head with specified thickness and saturation magnetic flux density products for STO magnetic layers

#84
20180061450
2018-03-01

Switching period control of microwave assisted magnetic recording for pole erasure suppression

#85
20170365282
2017-12-21

Texture-control layer for spin torque oscillator

#86
20170309299
2017-10-26

Microwave assisted magnetic recording head with spin torque oscillator corner angle relationship, head gimbal assembly, and magnetic recording device

#87
20170186450
2017-06-29

Magnetic recording and reproducing device with stacked body configuration

#88
20170148474
2017-05-25

Texture-control layer for spin torque oscillator

#89
20170148471
2017-05-25

Switching period control of microwave assisted magnetic recording for pole erasure suppression

#90
20170133042
2017-05-11

Write pole wrap-around shield with gap lamination

#91
20170092304
2017-03-30

Magnetic head, disk drive with the same and method of manufacturing magnetic head

#92
20170076741
2017-03-16

Perpendicular magnetic recording (PMR) writer with hybrid shield layers

#93
20170061995
2017-03-02

High frequency assisted magnetic recording head and disk device comprising the magnetic recording head

#94
20160284983
2016-09-29

CoFe/Ni multilayer film with perpendicular anisotropy for microwave assisted magnetic recording

#95
20160218728
2016-07-28

Dual-side spin transfer spin torque oscillator

#96
20160171992
2016-06-16

PMR writer with non-conformal side gaps

#97
20160078887
2016-03-17

Main pole layer with at least two sacrificial layers and a gap layer

#98
20160064017
2016-03-03

Data writer with flux density insert

#99
20150371668
2015-12-24

Write head having beveled non-magnetic write gap seed layer

#100
20150325258
2015-11-12

STIFF DISCRETE INSERT ARRAY FOR THERMAL PTR MANAGEMENT WITH DESIRED INDUCED STRESS STATE THAT REDUCES TENDENCY FOR WRITE POLE ERASURE

#101
20150228295
2015-08-13

AF-mode STO with negative Hk spin polarization layer

#102
20150131182
2015-05-14

Magnetic stack coupling buffer layer

#103
20150002959
2015-01-01

Data writer with flux density insert

#104
20140272471
2014-09-18

Write head having non-magnetic write gap seed layer, and method

#105
20140268415
2014-09-18

Main pole layer with at least tow sacrificial layers and a gap layer

#106
20140268404
2014-09-18

Microwave-assisted magnetic recording (MAMR) head with highly resistive magnetic material

#107
20140085751
2014-03-27

METHOD OF MAKING A MULTI-CHANNEL TIME BASED SERVO TAPE MEDIA

#108
20140085748
2014-03-27

Device such as magnetic head having hardened dielectric portions

#109
20140037861
2014-02-06

Method of forming a writer with an AFM write gap

#110
20130242431
2013-09-19

Magnetic recording head with non-conformal side shield gap

#111
20130029182
2013-01-31

CoFe/Ni Multilayer film with perpendicular anisotropy for microwave assisted magnetic recording

#112
20130029035
2013-01-31

CoFe/Ni multilayer film with perpendicular anisotropy for microwave assisted magnetic recording

#113
20120314325
2012-12-13

Selectively magnetic write gap insert

#114
20120295133
2012-11-22

Writer with an AFM write gap

#115
20120262821
2012-10-18

MAGNETIC RECORDING HEAD, HEAD GIMBAL ASSEMBLY WITH THE SAME, AND DISK DRIVE

#116
20110310510
2011-12-22

Perpendicular magnetic write head and magnetic recording device

#117
20110286126
2011-11-24

Method of making a multi-channel time based servo tape media

#118
20110279921
2011-11-17

CoFe/Ni Multilayer film with perpendicular anistropy for microwave assisted magnetic recording

#119
20100002335
2010-01-07

Method of making a multi-channel time based servo tape media

#120
20090262452
2009-10-22

Multichannel time based servo tape media

#121
20080024913
2008-01-31

Method of making a multi-channel time based servo tape media

#122
20060227456
2006-10-12

Laminated write gap to improve writer performance

#123
20060113194
2006-06-01

Method of forming NiP nonmagnetic film and method of manufacturing magnetic head using the film

#124
20050275968
2005-12-15

Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads

#125
20050219745
2005-10-06

Inductive magnetic head with non-magnetic seed layer gap structure and method for the fabrication thereof

#126
20050018360
2005-01-27

Magnetic head with thin gap layers

#127
17677326
2022-11-29

Magnetic head including main pole having top surface including first inclined portion, second inclined portion, and third inclined portion, and spin torque oscillator

#128
17538391
2023-01-31

Magnetic flux guiding device with spin torque oscillator (STO) film having negative spin polarization layers in assisted writing application

#129
17456440
2024-01-23

Cross track current design for energy assisted magnetic recording

#130
17313417
2022-07-05

Magnetic head including spin torque oscillator, first and second gap films, and first and second guard films, and manufacturing method for the same

#131
16920093
2021-07-27

Energy-assisted magnetic recording head with protective cap

#132
16906480
2022-01-18

Energy assisted magnetic recording head having improved areal density capability

#133
16885143
2023-03-28

Disk drive biasing two write assist elements using three terminal control circuitry

#134
16803952
2020-12-15

Spin transfer torque (STT) device with template layer for Heusler alloy magnetic layers

#135
16801399
2020-08-18

Magnetic head including spin torque oscillator and manufacturing method for the same

#136
16783057
2021-11-09

Magnetic recording write head with spin-torque oscillator (STO) and extended seed layer

#137
16564704
2020-11-10

Magnetic recording devices using virtual side shields for improved areal density capability

#138
16559372
2023-03-07

Three terminal magnetic recording head

#139
16453991
2020-12-15

Spin orbital torque based microwave assisted magnetic recording with dual spin hall layers or wrap around spin hall layer

#140
16453354
2023-01-17

Write heads having conducting side gap for directing current

#141
16372517
2020-07-14

Writer with recessed spin flipping element in the main pole surrounding gap

#142
16358310
2020-05-05

Spin torque oscillator device including a high damping field generation layer or a damping enhancing capping layer

#143
16278695
2020-08-04

Magnetic recording write head having YIG-heavy metal-YIG in write gap and side gap to maximize spin-orbit-coupling efficiency

#144
15730845
2018-11-06

Magnetic recording head with spin torque oscillator layers satisfying width, thickness and angle relationship formulas

#145
15659840
2018-10-16

High damping materials in shields and/or write pole

#146
15654199
2018-10-23

Perpendicular magnetic recording (PMR) writer with thinner side shield

#147
15445861
2018-04-17

Tunnel magnetoresistive sensor having leads supporting three-dimensional current flow

#148
15018311
2018-02-20

Data writer with laminated front shield

#149
14726513
2016-09-06

Spin torque oscillator with high spin torque efficiency and reliability

#150
14276409
2015-10-20

Thermally-assisted magnetic recording head