G11B5/73 - CPC Classification Index

ClassID:

197953 ⎘

G11B5/73 - CPC Classification

Classification description:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor; Record carriers characterised by the selection of the material Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer

Sub-classes:

G11B5/7305 » {with bonding agent in the material} 32
G11B5/731 » {without bonding agent in the material} 6
G11B5/733 » characterised by the addition of non-magnetic particles 168
G11B5/735 » characterised by the back layer 101
G11B5/738 » characterised by the intermediate layer 53

Recent Application in this class:

20260105930

2026-04-16

MAGNETIC TAPE AND TAPE CARTRIDGE

20250391436

2025-12-25

MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING DEVICE

20250087239

2025-03-13

MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE APPARATUS

20240371404

2024-11-07

SUBSTRATE FOR MAGNETIC DISK, MANUFACTURING METHOD THEREOF, AND MAGNETIC DISK

20240203455

2024-06-20

MAGNETIC RECORDING CARTRIDGE

20240062779

2024-02-22

METHOD FOR MANUFACTURING MAGNETIC DISK, MAGNETIC DISK, AND MAGNETIC DISK PRECURSOR

20240013807

2024-01-11

MAGNETIC TAPE APPARATUS, MAGNETIC TAPE, AND MAGNETIC TAPE CARTRIDGE

20230402063

2023-12-14

MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING CARTRIDGE, AND RECORDING/REPRODUCING APPARATUS

20230402060

2023-12-14

Magnetic recording medium having characterized magnetic layer, magnetic tape cartridge, and magnetic recording and reproducing device

#10

20220310119

2022-09-29

MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS

#11

20220068305

2022-03-03

Base member, spindle motor, and hard disk drive device

#12

20220013146

2022-01-13

Magnetic tape cartridge and magnetic tape device having characterized winding deviation occurrence load

#13

20210241797

2021-08-05

Magnetic recording cartridge

#14

20210201944

2021-07-01

Magnetic recording medium and magnetic storage device

#15

20210118468

2021-04-22

Magnetic recording tape and magnetic recording tape cartridge

#16

20210056993

2021-02-25

Underlayer formulation for tape media

#17

20200342908

2020-10-29

Magnetic recording cartridge

#18

20200342907

2020-10-29

Magnetic recording cartridge

#19

20200342902

2020-10-29

Magnetic recording medium

#20

20200342901

2020-10-29

MAGNETIC RECORDING MEDIUM

#21

20200251141

2020-08-06

Magnetic tape having characterized magnetic layer, magnetic tape cartridge, and magnetic tape device

#22

20200243111

2020-07-30

Single reel magnetic tape cartridge with pre-defined tape width difference

#23

20200211591

2020-07-02

SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM, HARD DISK DRIVE

#24

20200027481

2020-01-23

Substrate for magnetic disks, and magnetic disk

#25

20190309394

2019-10-10

Sputtering target material

#26

20190259417

2019-08-22

Single reel magnetic tape cartridge with pre-defined tape width difference

#27

20190221233

2019-07-18

Hard disk drive with magnetic-disk substrate

#28

20190093234

2019-03-28

Base plate, hard disk drive, and method of manufacturing base plate

#29

20190036018

2019-01-31

Magnetic and spin logic devices based on Jahn-Teller materials

#30

20180350399

2018-12-06

HEAT ASSISTED MAGNETIC RECORDING MEDIA WITH CO-BASED ALLOY

#31

20180342262

2018-11-29

MAGNETIC RECORDING HEAD AND DISK DEVICE COMPRISING THE SAME

#32

20180308516

2018-10-25

Fractionation method for magnetic recording-magnetic powder, fractionation apparatus for magnetic recording-magnetic powder, and method of producing magnetic recording medium

#33

20180226095

2018-08-09

Base for magnetic recording medium, and HDD

#34

20180222789

2018-08-09

Glass for data storage medium substrate, glass substrate for data storage medium, and magnetic disk

#35

20180221928

2018-08-09

MAGNETIC DISC ALUMINUM ALLOY SUBSTRATE AND MANUFACTURING METHOD THEREFOR

#36

20180182429

2018-06-28

Magnetic tape device with magnetic tape having particular C-H derived C concentration and magnetic reproducing method

#37

20180182423

2018-06-28

MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS

#38

20180040346

2018-02-08

Method for producing magnetic recording medium

#39

20170365279

2017-12-21

Magnetic recording medium and magnetic memory device including magnetic layers having granular structure of magnetic grains and grain boundary portion

#40

20170327930

2017-11-16

ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISK

#41

20170263278

2017-09-14

Magnetic-disk glass substrate, magnetic disk and method for manufacturing magnetic-disk glass substrate

#42

20170256278

2017-09-07

Magnetic-disk substrate having a small waviness, for use as a magnetic disk, and a magnetic-disk drive device for use with the magnetic disk

#43

20170249964

2017-08-31

Magnetic tape

#44

20170194025

2017-07-06

Magnetic-disk substrate and magnetic disk

#45

20170186458

2017-06-29

Base for magnetic recording medium

#46

20170169849

2017-06-15

Substrate for magnetic disk and magnetic disk

#47

20170154647

2017-06-01

STACKED INTERMEDIATE LAYER FOR PERPENDICULAR MAGNETIC RECORDING MEDIA

#48

20170140785

2017-05-18

Magnetic-disk substrate and magnetic disk

#49

20160329073

2016-11-10

Magnetic-disk substrate having a small waviness, for use as a magnetic disk, and a magnetic-disk drive device for use with the magnetic disk

#50

20160163344

2016-06-09

Disk-shaped glass substrate, magnetic-disk glass substrate, method for manufacturing magnetic-disk glass substrate, and magnetic disk

#51

20160148633

2016-05-26

Perpendicular magnetic recording medium and magnetic storage apparatus

#52

20160118073

2016-04-28

Method for manufacturing glass substrate, method for manufacturing magnetic disk, and polishing liquid composition for glass substrate

#53

20160099018

2016-04-07

Magnetic recording medium

#54

20160005431

2016-01-07

Glass substrate for magnetic disk and magnetic disk

#55

20150262604

2015-09-17

Magnetic-disk glass substrate and magnetic disk

#56

20150255103

2015-09-10

Magnetic-disk glass substrate, magnetic disk and method for manufacturing magnetic-disk glass substrate

#57

20150248910

2015-09-03

Magnetic-disk glass substrate and magnetic disk

#58

20150158139

2015-06-11

MANUFACTURING METHOD OF GLASS SUBSTRATE FOR MAGNETIC DISK, MAGNETIC DISK, AND MAGNETIC DATA RECORDING/REPRODUCING DEVICE

#59

20140334276

2014-11-13

Glass for magnetic recording medium substrate and usage thereof

#60

20140329112

2014-11-06

MAGNETIC RECORDING MEDIUM

#61

20140308542

2014-10-16

Magnetic recording medium and magnetic storage apparatus

#62

20140064047

2014-03-06

Magnetic recording medium having multiple under layers for heat-assisted magnetic recording apparatus

#63

20140036644

2014-02-06

Glass for magnetic recording medium substrate and usage thereof

#64

20130209836

2013-08-15

Perpendicular magnetic recording medium and method of manufacturing same

#65

20130071695

2013-03-21

Hybrid grain boundary additives in granular media

#66

20130011695

2013-01-10

Crystallized glass substrate for information recording medium and method of producing the same

#67

20110111160

2011-05-12

Glass substrate for information recording medium and information recording medium

#68

20080182135

2008-07-31

MAGNETIC RECORDING MEDIUM

#69

20080152956

2008-06-26

MAGNETIC RECORDING MEDIUM AND RADIATION CURING COMPOSITION

#70

20070287033

2007-12-13

Magnetic recording medium

#71

20070287032

2007-12-13

MAGNETIC RECORDING MEDIUM

#72

20070231610

2007-10-04

Magnetic recording medium

#73

20070190366

2007-08-16

Magnetic recording medium

#74

20070059563

2007-03-15

Magnetic recording medium

#75

20070020490

2007-01-25

Magnetic recording medium

#76

20060228590

2006-10-12

Magnetic recording medium and production process therefor

#77

20060222906

2006-10-05

Radiation curing polyurethane resin for magnetic recording medium, method of manufacturing radiation curing polyurethane resin for magnetic recording medium, and magnetic recording medium

#78