Patents-Review.com
ClassID:

197959 ⎘

G11B5/733 - 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 characterised by the addition of non-magnetic particles

Recent Application in this class:
#1
20240331727
2024-10-03

MAGNETIC RECORDING MEDIUM AND CARTRIDGE

 #2
20230260543
2023-08-17

Magnetic recording medium, magnetic tape cartridge, and magnetic recording and reproducing device

 #3
20230099064
2023-03-30

Magnetic tape, magnetic tape cartridge, and magnetic tape device

 #4
20220230660
2022-07-21

Magnetic recording medium having controlled dimensional variation

 #5
20220013146
2022-01-13

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

 #6
20210407540
2021-12-30

Magnetic recording medium having controlled dimensional characteristics

 #7
20210390980
2021-12-16

Tape media having synergistic magnetic recording layer and underlayer

 #8
20210350827
2021-11-11

Magnetic recording medium having controlled saturation flux density

 #9
20210287712
2021-09-16

Magnetic tape having characterized magnetic layer and magnetic recording and reproducing device

 #10
20210272594
2021-09-02

Magnetic recording medium, magnetic tape cartridge, and magnetic recording and reproducing device

 #11
20210233565
2021-07-29

Magnetic recording medium, magnetic recording and reproducing apparatus, magnetic tape cartridge, and magnetic tape cartridge group

 #12
20210233561
2021-07-29

Magnetic recording medium, magnetic recording and reproducing apparatus, magnetic tape cartridge, and magnetic tape cartridge group

 #13
20210090602
2021-03-25

Magnetic recording medium having characterized back coat and magnetic recording and reproducing apparatus

 #14
20210090600
2021-03-25

Magnetic recording medium having characterized back coating layer and magnetic recording and reproducing apparatus

 #15
20210090599
2021-03-25

Magnetic recording medium having characterized magnetic layer and magnetic recording and reproducing device

 #16
20210082463
2021-03-18

Magnetic recording medium having characterized magnetic layer and magnetic recording and reproducing device

 #17
20210056996
2021-02-25

Tape media having synergistic magnetic recording layer and underlayer

 #18
20210020196
2021-01-21

Magnetic recording medium having controlled dimensional variation

 #19
20210012805
2021-01-14

Magnetic recording medium and cartridge

 #20
20210012798
2021-01-14

Magnetic recording medium having controlled dimensional variation

 #21
20200411043
2020-12-31

Magnetic recording medium having controlled dimensional variation

 #22
20200411042
2020-12-31

High density magnetic recording medium and cartridge

 #23
20200402531
2020-12-24

High density magnetic recording medium and cartridge including high density magnetic recording medium

 #24
20200365179
2020-11-19

Magnetic recording medium and magnetic recording and reproducing apparatus

 #25
20200342906
2020-10-29

Magnetic recording medium and magnetic recording and reproducing device

 #26
20200342903
2020-10-29

Magnetic recording medium having characterized magnetic layer, and magnetic recording and reproducing apparatus

 #27
20200312364
2020-10-01

Magnetic recording medium having a dimensional variation

 #28
20200312363
2020-10-01

Magnetic recording medium and magnetic recording and reproducing device

 #29
20200312362
2020-10-01

Magnetic recording medium including compound having a salt structure and magnetic recording and reproducing apparatus

 #30
20200312358
2020-10-01

Magnetic recording medium having a dimensional variation

 #31
20200302964
2020-09-24

Single reel magnetic tape cartridge with predefined tape width difference and servo band interval difference

 #32
20200302962
2020-09-24

Magnetic tape having characterized back coating layer, magnetic tape cartridge, and magnetic recording and reproducing apparatus

 #33
20200286515
2020-09-10

Magnetic recording medium having non-magnetic layer and characterized vertical squareness ratio, and magnetic recording and reproducing device

 #34
20200279580
2020-09-03

Magnetic recording medium having characterized magnetic layer, and magnetic recording and reproducing apparatus

 #35
20200251141
2020-08-06

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

 #36
20200227081
2020-07-16

Magnetic tape having characterized magnetic layer and magnetic recording and reproducing device

 #37
20200208269
2020-07-02

Carbon overcoat surface treatment

 #38
20190378540
2019-12-12

Magnetic recording medium having a dimensional variation

 #39
20190295586
2019-09-26

Magnetic tape having servo pattern and characterized magnetic layer, and magnetic tape device

 #40
20190287562
2019-09-19

Coating-type magnetic recording medium for heat-assisted recording, and heat-assisted magnetic recording apparatus and heat-assisted magnetic recording method using the same

 #41
20190084911
2019-03-21

Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium

 #42
20190074032
2019-03-07

Magnetic recording medium having specific surface characteristics and magnetic recording and reproducing device

 #43
20190027180
2019-01-24

Magnetic tape having characterized magnetic layer

 #44
20180137887
2018-05-17

Magnetic recording medium with controlled surface characteristics

 #45
20180114541
2018-04-26

MAGNETIC RECORDING MEDIUM

 #46
20180082710
2018-03-22

Magnetic recording medium having characterized magnetic layer and method for manufacturing same

 #47
20170372740
2017-12-28

Magnetic tape including characterized magnetic layer and magnetic tape device

 #48
20170249965
2017-08-31

Magnetic tape

 #49
20170249964
2017-08-31

Magnetic tape

 #50
20170249963
2017-08-31

Magnetic tape

 #51
20170221517
2017-08-03

Magnetic tape having characterized backcoat layer and method of manufacturing the same

 #52
20170221516
2017-08-03

Magnetic tape having characterized backcoat layer and method of manufacturing the same

 #53
20170032814
2017-02-02

Magnetic recording medium having specific underlayer features

 #54
20160293196
2016-10-06

Magnetic recording medium and magnetic signal reproducing device

 #55
20160189739
2016-06-30

Magnetic tape and method of manufacturing the same

 #56
20160148634
2016-05-26

MAGNETIC RECORDING MEDIA WITH IMPROVED GRAIN COLUMNAR GROWTH FOR ENERGY ASSISTED MAGNETIC RECORDING

 #57
20160093323
2016-03-31

Magnetic tape and method of manufacturing the same

 #58
20160064024
2016-03-03

MAGNETIC TAPE

 #59
20160027462
2016-01-28

Magnetic recording medium manufacturing method

 #60
20160027461
2016-01-28

METHOD FOR FORMING PARTICLE LAYER AND METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM

 #61
20150248908
2015-09-03

MAGNETIC RECORDING MEDIUM

 #62
20140087212
2014-03-27

CARBON BLACK COMPOSITION, CARBON BLACK-CONTAINING COATING FILM, AND MAGNETIC RECORDING MEDIUM COMPRISING THE SAME

 #63
20140087211
2014-03-27

MAGNETIC RECORDING MEDIUM COATING COMPOSITION AND MAGNETIC RECORDING MEDIUM

 #64
20130029183
2013-01-31

CARBON BLACK COMPOSITION AND USAGE THEREOF

 #65
20120196156
2012-08-02

MAGNETIC TAPE

 #66
20120160069
2012-06-28

MAGNETIC RECORDING MEDIUM AND PROCESS OF PRODUCING THE SAME

 #67
20120057256
2012-03-08

Multi-Layer Sheet Product

 #68
20120045664
2012-02-23

Magnetic recording medium

 #69
20110242698
2011-10-06

Barium ferrite magnetic storage media

 #70
20110229740
2011-09-22

Magnetic tape and method of manufacturing the same

 #71
20110229738
2011-09-22

Biaxially oriented polyester film and magnetic recording tape

 #72
20110063753
2011-03-17

MULTI-LAYER SHEET PRODUCT

 #73
20100323222
2010-12-23

MAGNETIC RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME

 #74
20100247972
2010-09-30

Magnetic recording medium

 #75
20100227201
2010-09-09

MAGNETIC RECORDING MEDIUM

 #76
20100167092
2010-07-01

BIAXIALLY ORIENTED POLYESTER FILM AND MAGNETIC RECORDING TAPE

 #77
20100055504
2010-03-04

Method of modifying surface of powder, coating material, method of manufacturing magnetic recording medium, and magnetic recording medium manufactured by the same

 #78
20090246559
2009-10-01

MAGNETIC RECORDING MEDIUM AND PROCESS OF PRODUCING THE SAME

 #79
20090244774
2009-10-01

MAGNETIC RECORDING MEDIUM AND PROCESS OF PRODUCING THE SAME

 #80
20090142622
2009-06-04

MAGNETIC RECORDING MEDIUM

 #81
20090087686
2009-04-02

Magnetic recording medium and method of manufacturing the same

 #82
20090087684
2009-04-02

METHOD OF MODIFYING SURFACE OF POWDER, MAGNETIC RECORDING MEDIUM, AND COATING MATERIAL

 #83
20090042064
2009-02-12

NON-MAGNETIC PARTICLES FOR NON-MAGNETIC UNDERCOAT LAYER OF MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM

 #84
20090011285
2009-01-08

MAGNETIC RECORDING MEDIUM AND METHOD FOR PRODUCING THE SAME

 #85
20080305366
2008-12-11

Magnetic recording tape configured for improved surface lubricity

 #86
20080241602
2008-10-02

MAGNETIC RECORDING MEDIUM AND PROCESS FOR PRODUCING THE SAME

 #87
20080241600
2008-10-02

MAGNETIC RECORDING MEDIUM AND PROCESS FOR PRODUCING THE SAME

 #88
20080187784
2008-08-07

MAGNETIC RECORDING MEDIUM

 #89
20080187783
2008-08-07

MAGNETIC RECORDING MEDIUM

 #90
20080182135
2008-07-31

MAGNETIC RECORDING MEDIUM

 #91
20080152956
2008-06-26

MAGNETIC RECORDING MEDIUM AND RADIATION CURING COMPOSITION

 #92
20080145710
2008-06-19

MAGNETIC RECORDING MEDIUM

 #93
20080107921
2008-05-08

MAGNETIC TAPE AND MAGNETIC TAPE CARTRIDGE

 #94
20080026256
2008-01-31

MAGNETIC RECORDING MEDIUM

 #95
20080017073
2008-01-24

METHOD FOR MANUFACTURING MAGNETIC PAINT, METHOD FOR MANUFACTURING NON-MAGNETIC PAINT AND MAGNETIC RECORDING MEDIUM

 #96
20070287033
2007-12-13

Magnetic recording medium

 #97
20070287032
2007-12-13

MAGNETIC RECORDING MEDIUM

 #98
20070254190
2007-11-01

Magnetic recording medium having improved durability for high density applications

 #99
20070231616
2007-10-04

Magnetic recording medium

 #100
20070231615
2007-10-04

Magnetic recording medium

 #101
20070231613
2007-10-04

Magnetic recording medium

 #102
20070231611
2007-10-04

Magnetic recording medium and process of producing the same

 #103
20070230054
2007-10-04

Magnetic tape

 #104
20070224458
2007-09-27

Magnetic recording medium

 #105
20070224456
2007-09-27

Magnetic recording medium and method for production thereof

 #106
20070212576
2007-09-13

Magnetic recording medium with dual magnetic sides and having a low resistivity

 #107
20070190366
2007-08-16

Magnetic recording medium

 #108
20070166571
2007-07-19

Magnetic recording medium and process of production thereof

 #109
20070160876
2007-07-12

Magnetic recording medium

 #110
20070159722
2007-07-12

Magnetic recording medium using magnetic powder having a core portion and an outer layer portion including a rare earth element and magnetic recording cassette

 #111
20070141402
2007-06-21

Magnetic recording medium utilizing a back coat layer containing a carboxylic acid amine salt and a phosphate amine salt

 #112
20070111040
2007-05-17

Magnetic recording medium utilizing specified non-magnetic particles in the magnetic layer

 #113
20070059563
2007-03-15

Magnetic recording medium

 #114
20070054039
2007-03-08

Method for manufacturing magnetic recording medium

 #115
20070026264
2007-02-01

MAGNETIC RECORDING MEDIUM

 #116
20070020490
2007-01-25

Magnetic recording medium

 #117
20070003797
2007-01-04

Magnetic recording medium

 #118
20060292402
2006-12-28

MAGNETIC RECORDING MEDIUM

 #119
20060257693
2006-11-16

Magnetic recording medium

 #120
20060222907
2006-10-05

Magnetic recording medium having an atmospheric plasma modified substrate

 #121
20060194081
2006-08-31

Magnetic recording medium

 #122
20060166040
2006-07-27

Powder for lower layer of application type of layered magnetic recording medium and magnetic recording medium using the same

 #123
20060159963
2006-07-20

Magnetic recording medium having low broadband noise

 #124
20060124887
2006-06-15

Method for manufacturing magnetic paint, method for manufacturing non-magnetic paint and magnetic recording medium

 #125
20060093869
2006-05-04

Magnetic recording medium

 #126
20060083954
2006-04-20

Magnetic recording medium

 #127
20060083953
2006-04-20

Magnetic recording medium

 #128
20060078711
2006-04-13

Magnetic recording medium and magnetic recording and reproducing method using the same

 #129
20060068233
2006-03-30

Magnetic recording medium

 #130
20060040141
2006-02-23

Nonmagnetic powder comprising acicular iron and having specific porosity for a magnetic recording medium, method of manufacturing same, and magnetic recording medium using same

 #131
20060024515
2006-02-02

Magnetic recording medium

 #132
20060019127
2006-01-26

Magnetic recording medium

 #133
20060019123
2006-01-26

Magnetic recording medium

 #134
20060008681
2006-01-12

Magnetic recording medium

 #135
20060008645
2006-01-12

Magnetic powder, method for producing the same and magnetic recording medium comprising the same

 #136
20050287398
2005-12-29

Magnetic recording medium

 #137
20050282041
2005-12-22

Magnetic recording medium

 #138
20050276999
2005-12-15

Magnetic recording medium using magnetic powder having a core portion and an outer layer portion including a rare earth element and magnetic recording cassette

 #139
20050266277
2005-12-01

Magnetic recording medium

 #140
20050266276
2005-12-01

Magnetic recording medium

 #141
20050260459
2005-11-24

Magnetic recording medium

 #142
20050260456
2005-11-24

Magnetic recording medium

 #143
20050255309
2005-11-17

Multi-layer sheet product

 #144
20050238925
2005-10-27

Magnetic recording medium

 #145
20050233179
2005-10-20

Magnetic recording media with non-magnetic support and radiation cured layer

 #146
20050221127
2005-10-06

Multi-layer carbonless sheet product

 #147
20050202289
2005-09-15

Magnetic recording tape

 #148
20050196645
2005-09-08

Magnetic tape

 #149
20050181241
2005-08-18

Magnetic recording medium having narrow pulse width characteristics

 #150
20050175866
2005-08-11

Magnetic recording medium

 #151
20050170213
2005-08-04

Magnetic recording medium

 #152
20050170190
2005-08-04

Magnetic recording medium

 #153
20050158586
2005-07-21

Powder for underlayer of coating-type magnetic recording medium and magnetic recording medium comprising the same

 #154
20050153170
2005-07-14

Magnetic tape and magnetic tape cartridge

 #155
20050142386
2005-06-30

Magnetic tape including an intermediate layer consisting essentially of a binder

 #156
20050129945
2005-06-16

Powder for underlayer of coating-type magnetic recording medium

 #157
20050118459
2005-06-02

Magnetic recording medium

 #158
20050106420
2005-05-19

Magnetic recording medium

 #159
20050100763
2005-05-12

Magnetic recording medium

 #160
20050100762
2005-05-12

Magnetic recording medium utilizing specified non-magnetic particles in the magnetic layer

 #161
20050089724
2005-04-28

Dual-layer data storage media having differing binder systems in each layer

 #162
20050089723
2005-04-28

Magnetic recording medium

 #163
20050089721
2005-04-28

Magnetic recording medium including a radiation-cured material layer having a specified structure and composition

 #164
20050048323
2005-03-03

Magnetic recording medium

 #165
20050025998
2005-02-03

Data storage media having a sublayer containing a pigment combination having balanced pigment weight ratios

 #166
20050019557
2005-01-27

Coating composition and method for producing the same

 #167
20050008898
2005-01-13

Magnetic recording medium

 #168
20050003235
2005-01-06

Process of producing magnetic recording medium

 #169
17820188
2023-09-26

Spin torque assisted magnetic recording media