ClassID:

126844

D21H13/26 - CPC Classification

Classification description:

Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material; Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds Polyamides; Polyimides

Recent Application in this class:
#1
20260071385
2026-03-12

Papers Having Low Density and High Average Specific Modulus

#2
20250333906
2025-10-30

CONDUCTIVE PAPER, PRODUCTION METHOD THEREOF, METALLIC ADHEREND AND PRODUCTION METHOD THEREOF

#3
20250259764
2025-08-14

ELECTRICAL INSULATION PAPER

#4
20240351318
2024-10-24

IMPREGNATING COATING LAYER FOR INSULATING SHEETSAND MULTILAYER LAMINATES

#5
20240294421
2024-09-05

MAT AND GYPSUM BOARDS SUITABLE FOR WET OR HUMID AREAS

#6
20240271365
2024-08-15

MODIFIED ARAMID PULP AND FRICTION MATERIAL COMPRISING MODIFIED ARAMID PULP

#7
20240125050
2024-04-18

CIRCUIT BOARD UNWOVEN FABRIC, CIRCUIT BOARD PREPREG USING SAME AND CIRCUIT BOARD USING SAME

#8
20230364900
2023-11-16

Aramid compound paper with pinning effect and preparation method thereof

#9
20230323599
2023-10-12

Electromagnetic shielding paper based on modification of conductive MOF material and preparation method thereof

#10
20230304224
2023-09-28

Paper-based Electromagnetic Shielding Composite with Flame Retardant Properties and Its Preparation Method and Application

#11
20230151548
2023-05-18

Paper comprising microfilaments

#12
20230052674
2023-02-16

Low-shedding aramid paper containing mica

#13
20220389660
2022-12-08

Aramid pulp and method for manufacturing the same

#14
20220349125
2022-11-03

Paper comprising microfilaments

#15
20220316141
2022-10-06

Aramid-mica composite insulating nanopaper and preparation method thereof

#16
20220290375
2022-09-15

MULTILAYERED FIRE-RESISTANT SHEET

#17
20220243779
2022-08-04

METHOD FOR PRODUCING WET-RUNNING FRICTION PAPER, AND WET-RUNNING FRICTION PAPER

#18
20220186440
2022-06-16

Polyimide fiber paper using thermoplastic polymer

#19
20220033595
2022-02-03

METHOD FOR PRODUCING HEAT-RESISTANT RESIN COMPOSITE AND HEATRESISTANT RESIN COMPOSITE

#20
20220025581
2022-01-27

THERMAL INSULATING PAPER AND METHOD FOR PRODUCING A THERMAL INSULATING PAPER

#21
20210301472
2021-09-30

DIAMOND ENRICHED INSULATION PAPER FOR THE COOLING IMPROVEMENT OF AN ELECTRICAL MACHINE

#22
20210254286
2021-08-19

Aramid paper coated with aramid nanofibers and a method of preparing the same

#23
20210230808
2021-07-29

Nonwoven web composition, method to prepare the composition and articles thereof

#24
20210140108
2021-05-13

Aramid-based paper with improved properties

#25
20210123189
2021-04-29

Filter paper

#26
20210062429
2021-03-04

Aramid nanofiber-based insulation paper and preparation method thereof

#27
20210029854
2021-01-28

ELECTROMAGNETIC WAVE ABSORBING SHEET AND METHOD FOR PRODUCING SAME

#28
20210017713
2021-01-21

Nano TiO2-doped anti-ultraviolet para-aramid nano paper and preparation method thereof

#29
20210010204
2021-01-14

Aramid fiber far-infrared emitting paper and preparation method thereof

#30
20200362516
2020-11-19

Paper comprising aramid pulp suitable for electrochemical cells, and electrochemical cells made therefrom

#31
20200295328
2020-09-17

Papers useful as thermal insulation and flame barriers for battery cells

#32
20200283958
2020-09-10

Method of producing a fibrous web

#33
20200208351
2020-07-02

WET NONWOVEN FABRIC CONTAINING META-ARAMID AND POLYPHENYLENE SULFIDE AND LAMINATED SHEET OF THE SAME

#34
20200123708
2020-04-23

REINFORCED PAPER, METHOD OF MAKING A REINFORCED PAPER, AND ARTICLE COMPRISING A REINFORCED PAPER

#35
20200115852
2020-04-16

Polyimide fiber sheet

#36
20200056332
2020-02-20

High tensile strength paper suitable for use in electrochemical cells

#37
20200010688
2020-01-09

OLEOPHOBIC COATINGS AND WIPES AND APPLICATORS USED TO PRODUCE THEM

#38
20190376237
2019-12-12

Aramid paper suitable for use in electronic applications

#39
20190229317
2019-07-25

Separator and non-aqueous electrolyte battery

#40
20190211895
2019-07-11

Friction material comprising aramid

#41
20190203421
2019-07-04

Functional substance adsorption device for fiber

#42
20190177917
2019-06-13

Method for manufacturing aramid pulp comprising PVP

#43
20190127918
2019-05-02

Paper comprising aramid pulp and a friction paper made therefrom

#44
20190106842
2019-04-11

Method of producing a fibrous web containing natural and synthetic fibres

#45
20190070540
2019-03-07

Filter medium for liquid filter and liquid filter

#46
20190061270
2019-02-28

Laminate of aramid paper sheet and polyimide film and method for producing same

#47
20190048528
2019-02-14

Porous sheet

#48
20180187351
2018-07-05

Flame-blocking nonwoven fabric

#49
20180162086
2018-06-14

HONEYCOMB PAPER

#50
20180155876
2018-06-07

HONEYCOMB CORE HAVING A HIGH COMPRESSION STRENGTH

#51
20180142415
2018-05-24

Aramid paper, manufacturing method therefor, and use thereof

#52
20180061523
2018-03-01

THERMALLY CONDUCTIVE ELECTRICAL INSULATION MATERIAL

#53
20180030623
2018-02-01

POWDER OF FRAGMENTS OF AT LEAST ONE POLYMERIC NANOFIBER

#54
20170306563
2017-10-26

FINE FIBER PULP FROM SPINNING AND WET LAID FILTER MEDIA

#55
20170305783
2017-10-26

Mat and gypsum boards suitable for wet or humid areas

#56
20170198437
2017-07-13

RESIN SHEET, ARTICLE, AND METHOD FOR MANUFACTURING RESIN SHEET

#57
20170159240
2017-06-08

Wet paper friction material

#58
20170106620
2017-04-20

Fire retarded aramid fiber-based honeycomb

#59
20170073896
2017-03-16

Method for producing meta-aramid fiber paper-based material

#60
20170050420
2017-02-23

Aramid honeycomb fiber paper and preparation method thereof

#61
20170030020
2017-02-02

ELECTRICAL INSULATION PAPER, METHODS OF MANUFACTURE, AND ARTICLES MANUFACTURED THEREFROM

#62
20160237620
2016-08-18

BASE PAPER FOR HEAT EXCHANGER, AND TOTAL HEAT EXCHANGE ELEMENT USING SAME

#63
20160197325
2016-07-07

Separator paper for electrochemical cells

#64
20160194832
2016-07-07

Multilayered structure comprising fine fiber cellulose layer

#65
20160160444
2016-06-09

Fire-retardant sheet material

#66
20160153145
2016-06-02

ELECTRICAL INSULATION PAPER, METHODS OF MANUFACTURE, AND ARTICLES MANUFACTURED THEREFROM

#67
20160097162
2016-04-07

Honeycomb core having a high compression strength

#68
20160083907
2016-03-24

Crumb made of pulp

#69
20160076201
2016-03-17

Process to manufacture a mixture of p-aramid pulp with chopped fibers, mixture and its use

#70
20160046768
2016-02-18

Method for preparing polyamideimide fibrid

#71
20150376837
2015-12-31

Colored aramid paper and process for producing same

#72
20150360452
2015-12-17

High limiting oxygen index electrical insulation laminates

#73
20150176210
2015-06-25

Additives for papermaking

#74
20150167249
2015-06-18

Multilayered structure comprising fine fiber cellulose layer

#75
20150111013
2015-04-23

Aramid resin film laminate and method for producing the same

#76
20150056429
2015-02-26

Multilayered sheet

#77
20150050475
2015-02-19

Multilayered sheet

#78
20150050474
2015-02-19

Multilayered sheet

#79
20140299285
2014-10-09

Pellet comprising aramid pulp and filler material

#80
20140294906
2014-10-02

Method for conferring antimicrobial activity to a substrate

#81
20140178661
2014-06-26

ELECTRICAL INSULATION PAPER, METHODS OF MANUFACTURE, AND ARTICLES MANUFACTURED THEREFROM

#82
20140020857
2014-01-23

FREEZE DRIED PULP AND METHOD OF MAKING

#83
20130306234
2013-11-21

HONEYCOMB SANDWICH PANEL AND METHOD FOR MANUFACTURING THE SAME

#84
20130280509
2013-10-24

Paper comprising microfilaments

#85
20130269294
2013-10-17

Sterilizable and printable nonwoven packaging materials

#86
20130263385
2013-10-10

Parchmentized fibrous support containing parchmentizable synthetic fibers and method of manufacturing the same

#87
20130255899
2013-10-03

Transformer paper and other non-conductive transformer components

#88
20130210971
2013-08-15

Spun-dyed aramid fibers

#89
20120321807
2012-12-20

Method of making tough, flexible mats

#90
20120302120
2012-11-29

SHORT CUT MICROFIBERS

#91
20120241115
2012-09-27

Polyimide short fibers and heat-resistant paper comprising same

#92
20120227919
2012-09-13

Method for preparing aramid paper and the aramid paper obtained therefrom

#93
20120156956
2012-06-21

Electrical insulation material

#94
20110244193
2011-10-06

Folded Core Having a High Compression Modulus and Articles Made from the Same

#95
20110244175
2011-10-06

Honeycomb Core Having a High Compression Strength and Articles Made from the Same

#96
20110174452
2011-07-21

Base paper of aramid fiber honeycomb core and manufacturing method thereof

#97
20110126401
2011-06-02

HEAT-RESISTANT NONWOVEN FABRIC

#98
20110083820
2011-04-14

PAPER COMPRISING POLYBENZAZOLE OR PRECURSOR THEREOF

#99
20100314333
2010-12-16

FLUTABLE FIBER WEBS WITH LOW SURFACE ELECTRICAL RESISTIVITY FOR FILTRATION

#100
20100234496
2010-09-16

Non-fibrous polymer solution of para-aramid with high relative viscosity

#101
20100230061
2010-09-16

Process for Producing Optically Brightened Paper

#102
20100212851
2010-08-26

Para-aramid pulp including meta-aramid fibrids and processes of making same

#103
20100206502
2010-08-19

Electroconductive aramid paper and tape made therefrom

#104
20100124648
2010-05-20

Sheet structures having improved compression performance

#105
20100122769
2010-05-20

Processes for Making Sheet Structures having Improved Compression Performance

#106
20100051674
2010-03-04

WATER-REPELLANT AND GAS BARRIER COMPOSITE MATERIAL

#107
20100048078
2010-02-25

Folded Core Having a High Compression Modulus and Articles Made from the Same

#108
20100047515
2010-02-25

Honeycomb Core Having a High Compression Strength and Articles Made from the Same

#109
20090250181
2009-10-08

Paper comprising PIPD floc and process for making the same

#110
20090236064
2009-09-24

Paper comprising PIPD pulp and process for making same

#111
20090214818
2009-08-27

CORE HAVING A HIGH SHEAR STRENGTH AND ARTICLES MADE FROM SAME

#112
20090162605
2009-06-25

Papers containing floc derived from diamino diphenyl sulfone

#113
20090155526
2009-06-18

Honeycomb having a high compression strength and articles made from same

#114
20090061275
2009-03-05

Carbonized Paper With High Strength And Its Preparation Method And Uses

#115
20090029885
2009-01-29

META- AND PARA-ARAMID PULP AND PROCESSES OF MAKING SAME

#116
20080145600
2008-06-19

Honeycomb from paper having flame retardant thermoplastic binder

#117
20080145598
2008-06-19

Honeycomb from paper having a high melt point thermoplastic fiber

#118
20080145596
2008-06-19

Honeycomb containing poly(paraphenylene terephthalamide) paper with aliphatic polyamide binder and articles made therefrom

#119
20080000599
2008-01-03

Method for manufacturing an aramid paper with an applied plasma treatment

#120
20070246144
2007-10-25

Fibrous nonwoven mat and method

#121
20070232175
2007-10-04

Binder Fiber and Separator for Alkaline Cell Using Same

#122
20070207693
2007-09-06

Heat-Resistant Nonwoven Fabric

#123
20070172687
2007-07-26

Method for producing coated substrates

#124
20070167101
2007-07-19

Aramid thin sheet material and electrical/electronic parts using the same

#125
20070137818
2007-06-21

Para-aramid pulp including meta-aramid fibrids and processes of making same

#126
20070123132
2007-05-31

Nonwoven mat, method for production thereof and fibre composite

#127
20070111001
2007-05-17

Fiber mat and process of making same

#128
20070092799
2007-04-26

Heat resistant separators and electrical and electronic parts using the same

#129
20070087178
2007-04-19

Para-aramid fibrid film

#130
20070084575
2007-04-19

Composite papyraceous material

#131
20070082198
2007-04-12

Aramid fibrils

#132
20070010613
2007-01-11

Gasket sheet and method for manufacturing same

#133
20060266486
2006-11-30

Electroconductive aramid paper

#134
20060235104
2006-10-19

Non-fibrous polymer solution of para-aramid with high relative viscosity

#135
20060127687
2006-06-15

Method for producing aramid laminate

#136
20060121340
2006-06-08

Separator for alkaline batteriy and using same

#137
20060105662
2006-05-18

Fibrous nonwoven mats containing polyethermid fibers

#138
20060099393
2006-05-11

Composite thermoplastic sheets including natural fibers

#139
20060096728
2006-05-11

Glazed paper webs

#140
20060057925
2006-03-16

Nonwoven material for low friction bearing surfaces

#141
20060019081
2006-01-26

Process of attaching reinforcing ply to ply containing mica-rich and mica-poor faces

#142
20060011315
2006-01-19

Process and apparatus for making a sheet of aramid fibers using a foamed medium

#143
20060003659
2006-01-05

Aramid paper laminate

#144
20050287344
2005-12-29

Acrylic and para-aramid pulp and processes of making same

#145
20050284596
2005-12-29

Meta- and para-aramid pulp and processes of making same

#146
20050284595
2005-12-29

Cellulosic and para-aramid pulp and processes of making same

#147
20050230072
2005-10-20

Aramid paper blend

#148
20050221708
2005-10-06

Non-woven fabric for separator of alkali cell and method for production thereof

#149
20050136779
2005-06-23

Process for reinforcing a hydro-entangled pulp fibre material, and hydro-entangled pulp fibre material reinforced by the process

#150
20050118910
2005-06-02

Base material for laminate and process for producing the same

#151
20050112978
2005-05-26

Method of making tough, flexible mats and tough, flexible mats

#152
20050034830
2005-02-17

Wet-type paper friction member

#153
20050032452
2005-02-10

Conformable surfacing veil or reinforcement mat

#154
20050008850
2005-01-13

Glass flake having high thermal conductivity

#155
18424253
2024-10-08

Corona-resistant N-grade insulation paper for variable frequency motor and preparation method thereof