ClassID:

126385

D21C9/005 - CPC Classification

Classification description:

After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere; Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds

Recent Application in this class:
#1
20250162189
2025-05-22

STRONG AND TOUGH STRUCTURAL WOOD MATERIALS, AND METHODS FOR FABRICATING AND USE THEREOF

#2
20250075060
2025-03-06

SOLID OF MICROFIBROUS CELLULOSE AND METHOD FOR PRODUCING SOLID OF MICROFIBROUS CELLULOSE

#3
20250059707
2025-02-20

NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL

#4
20250034807
2025-01-30

REDUCED FURFURAL CONTENT IN POLYACRYLIC ACID CROSSLINKED CELLULOSE FIBERS

#5
20230383467
2023-11-30

CROSSLINKED KRAFT PULP COMPOSITIONS AND METHOD

#6
20230383461
2023-11-30

REDUCED FURFURAL CONTENT IN POLYACRYLIC ACID CROSSLINKED CELLULOSE FIBERS

#7
20230321574
2023-10-12

Reduction of leachable beta-glucan levels from cellulose-containing filter materials

#8
20230212341
2023-07-06

GRAFTED CROSSLINKED CELLULOSE

#9
20230166427
2023-06-01

Strong and tough structural wood materials, and methods for fabricating and use thereof

#10
20230160146
2023-05-25

Carboxylated cellulose nanofiber and preparation method thereof

#11
20230072598
2023-03-09

Tissue products comprising crosslinked fibers

#12
20220403597
2022-12-22

Method for Producing a Sheet Comprising Chemically Modified Cellulose Fibers

#13
20220372707
2022-11-24

PULP, SLURRY, SHEET, LAMINATE, AND METHOD FOR PRODUCING PULP

#14
20220316135
2022-10-06

MOLDABLE CELLULOSE FIBER BASED MATERIAL

#15
20220275577
2022-09-01

SURFACE MODIFIED CELLULOSE FIBER

#16
20220098798
2022-03-31

CELLULOSE FIBERS, CELLULOSE FIBER-CONTAINING MATERIAL, MOLDED BODY, AND METHOD FOR PRODUCING CELLULOSE FIBERS

#17
20220098796
2022-03-31

CROSSLINKING CELLULOSE WITH GLYOXAL TO IMPROVE ABSORPTION PROPERTIES

#18
20220074140
2022-03-10

Method for treating a fibrous material comprising nanocellulose with an organic acid or organic acid salt

#19
20220040881
2022-02-10

Strong and tough structural wood materials, and methods for fabricating and use thereof

#20
20220002945
2022-01-06

Production of modified pulp

#21
20210340706
2021-11-04

Nanocellulose production co-located at a pulp and paper mill

#22
20210269972
2021-09-02

METHOD OF MAKING PAPER OR BOARD

#23
20210246247
2021-08-12

Grafted crosslinked cellulose

#24
20210236973
2021-08-05

Reduction of leachable beta-glucan levels from cellulose-containing filter materials

#25
20210172118
2021-06-10

Repulping Method For The Removal Of Lignocellulosic Hornification

#26
20210131038
2021-05-06

MODIFIED FIBER, METHODS, AND SYSTEMS

#27
20210102337
2021-04-08

HIGH STRETCH PAPER AND METHOD OF PRODUCING THE SAME

#28
20200392255
2020-12-17

High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems

#29
20200347549
2020-11-05

Method to produce composite-enhanced market pulp and paper

#30
20200340183
2020-10-29

FILMS OF MICROFIBRILLATED CELLULOSE

#31
20200339783
2020-10-29

FILAMENTS OF MICROFIBRILLATED CELLULOSE

#32
20200332467
2020-10-22

Recovery method for organic acid, and production method for recycled pulp

#33
20200223091
2020-07-16

Strong and tough structural wood materials, and methods for fabricating and use thereof

#34
20200181840
2020-06-11

Reduced furfural content in polyacrylic acid crosslinked cellulose fibers

#35
20200173112
2020-06-04

Methods of making paper and paper with modified cellulose pulps

#36
20200140574
2020-05-07

PROCESS FOR THE PRODUCTION OF A NANOCELLULOSE MATERIAL TECHNICAL FIELD

#37
20200087435
2020-03-19

GRAFTED CROSSLINKED CELLULOSE

#38
20200048838
2020-02-13

Treated fibers and fibrous structures comprising the same

#39
20200032455
2020-01-30

Pulp, slurry, sheet, laminate, and method for producing pulp

#40
20200002891
2020-01-02

Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology

#41
20190376236
2019-12-12

Method to convert mechanical pulp derived waste material into value added cellulose products

#42
20190376235
2019-12-12

Treated fibers and fibrous structures comprising the same

#43
20190257029
2019-08-22

Man-made cellulosic fiber and nonwoven product or fabric comprising the cellulosic fiber

#44
20190226147
2019-07-25

High bulk tissue comprising cross-linked fibers

#45
20190226143
2019-07-25

Surface-modified cellulosic materials and methods of producing the same

#46
20190224600
2019-07-25

Reduction of leachable beta-glucan levels from cellulose-containing filter materials

#47
20190203413
2019-07-04

Methods of Modifying Pulp Comprising Cellulase Enzymes and Products Thereof

#48
20190169797
2019-06-06

METHOD OF PRODUCING A CARBOXYALKYLATED NFC PRODUCT, A CARBOXYALKYLATED NFC PRODUCT AND USE THEREOF

#49
20190100879
2019-04-04

Polyalkylene glycol based reagent with aldehyde end groups suitable for making cellulosic fibers with modified morphology

#50
20190100875
2019-04-04

Chemical efficiency increase in papermaking process

#51
20190093285
2019-03-28

Fine cellulose fiber and production method for same

#52
20190085508
2019-03-21

Modified fiber from shredded pulp sheets, methods, and systems

#53
20190078258
2019-03-14

Method for enhanced oxygen delignification of chemical wood pulps

#54
20190002801
2019-01-03

Polysaccharide derivatives as optical brightening agents

#55
20180363245
2018-12-20

CROSSLINKED KRAFT PULP COMPOSITIONS AND METHOD

#56
20180312610
2018-11-01

Cellulose composite materials and methods of making and using the same

#57
20180282490
2018-10-04

Supercritical CO2 cellulose spraydrying

#58
20180258591
2018-09-13

Fluff dryer machine drainage aid

#59
20180258589
2018-09-13

Modified fiber, methods, and systems

#60
20180251941
2018-09-06

NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL

#61
20180237545
2018-08-23

CELLULOSE FIBER AND METHOD FOR PRODUCING CELLULOSE FIBER

#62
20180230649
2018-08-16

Methods for reducing content of hexenuronic acids in cellulosic pulp

#63
20180187372
2018-07-05

Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology

#64
20180142411
2018-05-24

Methods of controlling the hydrophilicity of cellulose

#65
20180135244
2018-05-17

Specialty pulp with high intrinsic viscosity

#66
20180134851
2018-05-17

Process for preparing cellulose solution and equipment therefor

#67
20180094383
2018-04-05

Methods for the production of high solids nanocellulose

#68
20180087216
2018-03-29

REDUCED FURFURAL CONTENT IN POLYACRYLIC ACID CROSSLINKED CELLULOSE FIBERS

#69
20180073197
2018-03-15

Methods of making paper and paper with modified cellulose pulps

#70
20170356134
2017-12-14

Binder compositions for making crosslinked cellulose fiber

#71
20170247833
2017-08-31

Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology

#72
20170226692
2017-08-10

Integrating the production of carboxylated cellulose nanofibrils and cellulose nanocrystals using recyclable organic acids

#73
20170204566
2017-07-20

Methods of making paper and paper with modified cellulose pulps

#74
20170183817
2017-06-29

Modified fiber from shredded pulp sheets, methods, and systems

#75
20170137579
2017-05-18

Treatment of lignocellulosic biomass with aromatic chemicals as scavengers

#76
20170096773
2017-04-06

Method for coloring cellulose

#77
20170037576
2017-02-09

022913

#78
20170022223
2017-01-26

Method for producing surface-modified base material, method for producing joined body, new hydrosilane compound, surface treatment agent, surface treatment agent kit, and surface-modified base material

#79
20170002514
2017-01-05

Method of removing odors from fibrous materials used in forming biocomposite materials

#80
20160369454
2016-12-22

Modified fiber, methods, and systems

#81
20160326698
2016-11-10

Methods, Processes, and Compositions for Treating Pulp

#82
20160289895
2016-10-06

Methods for producing a cellulosic fiber having a high curl index and acquisition and distribution layer containing same

#83
20160237411
2016-08-18

Laccases for bio-bleaching

#84
20160201261
2016-07-14

Method for catalytic oxidation of cellulose and method for making a cellulose product

#85
20160186377
2016-06-30

Formation of hydrated nanocellulose sheets with or without a binder for the use as a dermatological treatment

#86
20160177503
2016-06-23

Reducing content of hexenuronic acids in cellulosic pulp

#87
20160160440
2016-06-09

Method for catalytic oxidation of cellulose and method for making a cellulose product

#88
20160153144
2016-06-02

A METHOD OF PRODUCING OXIDIZED OR MICROFIBRILLATED CELLULOSE

#89
20160145805
2016-05-26

Process for the production of a microfibrillated cellulose composition

#90
20160130751
2016-05-12

Method for treating chemical pulps by treatment with ozone in the presence of magnesium ions

#91
20160024717
2016-01-28

Modified cellulosic fibers having reduced hydrogen bonding

#92
20150376836
2015-12-31

Esterified cellulose pulp compositions and related methods

#93
20150322626
2015-11-12

REDUCED FURFURAL CONTENT IN POLYACRYLIC ACID CROSSLINKED CELLULOSE FIBERS

#94
20150315750
2015-11-05

Methods of making paper and paper with modified cellulose pulps

#95
20150292151
2015-10-15

Method for producing ultrahigh-viscosity refined cotton and device for transporting refined cotton pulp

#96
20150267342
2015-09-24

Washing apparatus and method for preparation of cellulose fibers for use in manufacture of biocomposite materials

#97
20150218757
2015-08-06

Method and intermediate for the production of highly refined or microfibrillated cellulose

#98
20150176222
2015-06-25

Multilayered tissue having reduced hydrogen bonding

#99
20150158955
2015-06-11

Low energy method for the preparation of non-derivatized nanocellulose

#100
20150125936
2015-05-07

Laccases for bio-bleaching

#101
20150122730
2015-05-07

OXYGEN TREATMENT OF WATER AND PULP FROM PAPER OR CARDBOARD PRODUCTION

#102
20150007952
2015-01-08

Method for producing a cellulose suspension

#103
20140311693
2014-10-23

Wood fibre acetylation

#104
20140290882
2014-10-02

Multi-stage catalytic carboxylation of mercerized cellulose fibers

#105
20140238626
2014-08-28

Method for producing cellulose nanofibers

#106
20140209259
2014-07-31

Wood pulp treatment

#107
20140174685
2014-06-26

Cellulase composition containing cellulase and papermaking polymers for paper dry strength application

#108
20140114059
2014-04-24

Method and a system for manufacturing cellulosic material

#109
20130324710
2013-12-05

Process for the derivatization of cellulose

#110
20130269890
2013-10-17

TAMPON INCLUDING CROSSLINKED CELLULOSE FIBERS AND IMPROVED SYNTHESIS PROCESSES FOR PRODUCING SAME

#111
20130228297
2013-09-05

Process for producing modified cellulose pulps, cellulose pulp thus obtained and use of biopolymer for producing cellulose pulps

#112
20130139980
2013-06-06

Method and system for producing market pulp and products thereof

#113
20130047893
2013-02-28

Composition comprising microfibrillated cellulose and a process for the production of a composition

#114
20120322997
2012-12-20

Process for producing differentiated cellulose fibers comprising an enzymatic treatment in association with an acid step

#115
20120097350
2012-04-26

ALKALINE PEROXIDE TREATMENT OF REJECTS IN AN INTERGRATED NEUTRAL-ALKALINE PAPER MILL

#116
20120006499
2012-01-12

Debonders for Use in Papermaking

#117
20120000618
2012-01-05

Reduction of fiber knots of cellulose crosslinked fibers by using plasma pre-treated pulpsheets

#118
20110308750
2011-12-22

Composite of hydrophobic lignocellulose material bonded to complementary material

#119
20110290434
2011-12-01

Pulp composition for paper and solid board production

#120
20110282048
2011-11-17

Cross-Linking Involving a Polymeric Carbohydrate Material

#121
20110265965
2011-11-03

Absorbent sheet having regenerated cellulose microfiber network

#122
20110263836
2011-10-27

METHOD FOR REDUCTION OF LIGHT-INDUCED YELLOWING OF LIGNIN-CONTAINING MATERIAL

#123
20110174455
2011-07-21

Compositions and processes for paper production

#124
20110155336
2011-06-30

Method for increasing the concentration of xylose in lignocellulosic hydrolysate

#125
20110005697
2011-01-13

PROCESS AND COMPOSITION FOR PREPARING A LIGNOCELLULOSE-BASED PRODUCT, AND THE PRODUCT OBTAINED BY THE PROCESS

#126
20100252213
2010-10-07

PULP AND PAPER HAVING INCREASED BRIGHTNESS

#127
20100212850
2010-08-26

Absorbent sheet having regenerated cellulose microfiber network

#128
20100018658
2010-01-28

Laccases for bio-bleaching

#129
20090227975
2009-09-10

TAMPON INCLUDING CROSSLINKED CELLULOSE FIBERS AND IMPROVED SYNTHESIS PROCESSES FOR PRODUCING SAME

#130
20080318043
2008-12-25

Carbon fibers from kraft softwood lignin

#131
20080314537
2008-12-25

Fibrous blend and method of making

#132
20080148999
2008-06-26

Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility

#133
20080147033
2008-06-19

Methods for the preparation of crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks

#134
20080105393
2008-05-08

Process for the Enzymatic Oxidation of a Substrate Comprising a Primary Hydroxyl Group

#135
20080081165
2008-04-03

Fibrous superabsorbent composite containing cellulose

#136
20080078515
2008-04-03

Methods for the preparation of fibrous superabsorbent composite containing cellulose

#137
20080078514
2008-04-03

Methods for the preparation of cellulose fibers having superabsorbent particles adhered thereto

#138
20080041541
2008-02-21

Uso of Cyclodextrin for Reducing Yellowing of Pulp and Paper

#139
20080017581
2008-01-24

Preparation and use of sorptive lignocellulosic material for decontamination of fluid and aqueous media

#140
20080017337
2008-01-24

Compositions and processes for paper production

#141
20080000603
2008-01-03

Covalent Bonding of Carboxylated Cellulose Fiber Webs

#142
20070224419
2007-09-27

Absorbent sheet having regenerated cellulose microfiber network

#143
20070193707
2007-08-23

Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness

#144
20070163735
2007-07-19

Method for reducing brightness reversion of mechanical pulps and high-yield chemical pulps

#145
20070143932
2007-06-28

Process for producing a fibre compositions

#146
20070101515
2007-05-10

Concentrated aqueous compositions of dyestuffs

#147
20070074832
2007-04-05

Densified fibrous structures and methods for making same

#148
20060144543
2006-07-06

Process for producing a fibrous composition

#149
20060118255
2006-06-08

Cross-linked pulp sheet

#150
20060096722
2006-05-11

Method of treating cellulose fibres with chlorine dioxide and an alkyl cellulose derivative

#151
20060070712
2006-04-06

Absorbent articles comprising thermoplastic resin pretreated fibers

#152
20060070711
2006-04-06

Low pH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture

#153
20060060319
2006-03-23

Method of making absorbent sheet from recycle furnish

#154
20060035557
2006-02-16

Aqueous super absorbent polymer and methods of use

#155
20060029567
2006-02-09

Material for odor control

#156
20050257905
2005-11-24

Process and composition for preparing a lignocellulose-based product, and the product obtained by the process

#157
20050247419
2005-11-10

Treatment composition for making acquisition fluff pulp in sheet form

#158
20050145350
2005-07-07

Individualized intrafiber crosslinked cellulosic fibers with improved brightness and color

#159
20050121159
2005-06-09

Process for the oxidation of hydroxy compounds by means of nitroxy compounds

#160
20050102762
2005-05-19

Cellulase preparations containing reducing agent and method of processing fiber

#161
20050079361
2005-04-14

Materials useful in making cellulosic acquisition fibers in sheet form

#162
20050019569
2005-01-27

Glyoxal crosslinked cellulosic fibers having improved brightness and color

#163
20050019563
2005-01-27

GLYOXAL CROSSLINKED CELLULOSIC FIBERS HAVING HIGH BULK

#164
20050016698
2005-01-27

Glyoxal crosslinked cellulosic fibers having improved brightness and color

#165
20050014669
2005-01-20

Hypochlorite free method for preparation of stable carboxylated carbohydrate products

#166
20050000669
2005-01-06

Saccharide treated cellulose pulp sheets

#167
18473215
2024-03-05

Preparation method and application of multifunctional intelligent cellulose-based visual label

#168
16257760
2019-12-10

Crosslinking cellulose with Glyoxal to improve absorption properties

#169
15353390
2017-11-28

Specialty pulp with high intrinsic viscosity