ClassID:

126384

D21C9/004 - 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 inorganic compounds

Recent Application in this class:
#1
20250341054
2025-11-06

EFFICIENT METHODS AND COMPOSITIONS FOR RECOVERY OF PRODUCTS FROM ORGANIC ACID PRETREATMENT OF PLANT MATERIALS

#2
20250215643
2025-07-03

COMPOSITE FIBERS AND METHODS OF MAKING THE SAME

#3
20250215642
2025-07-03

EFFICIENT METHODS AND COMPOSITIONS FOR RECOVERY OF PRODUCTS FROM ORGANIC ACID PRETREATMENT OF PLANT MATERIALS

#4
20250146218
2025-05-08

RECYCLING OF MIXTURES OF TEXTILES COMPRISING CELLULOSE

#5
20250146217
2025-05-08

EFFICIENT METHODS AND COMPOSITIONS FOR RECOVERY OF PRODUCTS FROM ORGANIC ACID PRETREATMENT OF PLANT MATERIALS

#6
20240018726
2024-01-18

METHOD FOR REDUCING AMOUNT OF BACTERIAL ENDOSPORES IN AN AQUEOUS FIBRE SUSPENSION

#7
20230321574
2023-10-12

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

#8
20230313455
2023-10-05

PROCESS FOR PRODUCTION OF CELLULOSE NANOFIBERS FROM MISCANTHUS X. GIGANTEUS AND COMPOSITES THEREFROM

#9
20230022830
2023-01-26

METHOD FOR PRODUCING CELLULOSE CARBAMATE

#10
20230009849
2023-01-12

ODOR CONTROL PULP COMPOSITION

#11
20220316135
2022-10-06

MOLDABLE CELLULOSE FIBER BASED MATERIAL

#12
20220298726
2022-09-22

Crosslinked pulps, cellulose ether products made therefrom; and related methods of making pulps and cellulose ether products

#13
20220251784
2022-08-11

PRODUCTION OF SHEETS COMPRISING FIBRILLATED CELLULOSE

#14
20220220225
2022-07-14

A method of treating a cellulosic material, a method of preparing a hydrolysed cellulosic material, use of a chlorite salt and gaseous pressurized HCl, use of chlorous acid, and a hydrolysed cellulosic material

#15
20220049420
2022-02-17

Efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials

#16
20210262165
2021-08-26

LIGNO CELLULOSIC MATERIALS AND THE PRODUCTS MADE THEREFROM

#17
20210261781
2021-08-26

PROCESS FOR THE PRODUCTION OF NANO-FIBRILLAR CELLULOSE GELS

#18
20210236973
2021-08-05

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

#19
20210156090
2021-05-27

Fine cellulose fiber-containing substance, method for manufacturing the same, and fine cellulose fiber dispersion

#20
20210062418
2021-03-04

Method for manufacturing a composition comprising microfibrillated cellulose

#21
20210040688
2021-02-11

METHOD OF PRODUCING DISSOLVING PULP

#22
20200392255
2020-12-17

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

#23
20200385928
2020-12-10

Odor control pulp composition

#24
20200340183
2020-10-29

FILMS OF MICROFIBRILLATED CELLULOSE

#25
20200263358
2020-08-20

Microfibrillated cellulose with enhanced properties and methods of making the same

#26
20200048838
2020-02-13

Treated fibers and fibrous structures comprising the same

#27
20200040525
2020-02-06

Crosslinked pulps, cellulose ether products made therefrom; and related methods of making pulps and cellulose ether products

#28
20200024804
2020-01-23

Method for manufacturing inorganic particle composite fiber sheet

#29
20190390405
2019-12-26

Methods for processing lignocellulosic material

#30
20190376236
2019-12-12

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

#31
20190376235
2019-12-12

Treated fibers and fibrous structures comprising the same

#32
20190367704
2019-12-05

Methods of Producing Cellulose Nanocrystals

#33
20190309477
2019-10-10

Method for preparing nanocellulose

#34
20190276672
2019-09-12

Process for the production of nano-fibrillar cellulose gels

#35
20190224600
2019-07-25

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

#36
20190169797
2019-06-06

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

#37
20190136450
2019-05-09

Low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same

#38
20190112758
2019-04-18

A LOW VISCOSITY KRAFT FIBER HAVING AN ENHANCED CARBOXYL CONTENT AND METHODS OF MAKING AND USING THE SAME

#39
20190106840
2019-04-11

Multimodal Particles for Retention and Drainage for Paper-Making Machines

#40
20180347112
2018-12-06

Method of treating cellulose pulp

#41
20180312610
2018-11-01

Cellulose composite materials and methods of making and using the same

#42
20180298558
2018-10-18

Hybrid Fire-Retarded Cellulose Materials

#43
20180282490
2018-10-04

Supercritical CO2 cellulose spraydrying

#44
20180282436
2018-10-04

Method for producing hydroxyalkyl alkyl cellulose

#45
20180282435
2018-10-04

Method for producing cellulose ether

#46
20180274172
2018-09-27

Odor control pulp composition

#47
20180273645
2018-09-27

Method for producing hydroxypropyl methyl cellulose

#48
20180237545
2018-08-23

CELLULOSE FIBER AND METHOD FOR PRODUCING CELLULOSE FIBER

#49
20180202103
2018-07-19

Low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same

#50
20180163344
2018-06-14

Method for reducing pulp viscosity in production of dissolving pulp

#51
20180135244
2018-05-17

Specialty pulp with high intrinsic viscosity

#52
20180119346
2018-05-03

Method of making bleached microcrystalline cellulose

#53
20180119345
2018-05-03

Process for producing a pulp

#54
20170342662
2017-11-30

Process for applying composition containing a cationic trivalent metal and debonder and fluff pulp sheet made from same

#55
20170306055
2017-10-26

METHOD OF PRODUCING NANOCELLULOSE

#56
20170198436
2017-07-13

LIGNO CELLULOSIC MATERIALS AND THE PRODUCTS MADE THEREFROM

#57
20170175329
2017-06-22

METHODS FOR OXYGEN DELIGNIFICATION AND OZONE BLEACHING OF PULP

#58
20170172152
2017-06-22

Ligno cellulosic materials and the products made therefrom

#59
20170121906
2017-05-04

Methods for the production of high alpha-cellulose pulp

#60
20170073892
2017-03-16

Low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same

#61
20170037576
2017-02-09

022913

#62
20160237624
2016-08-18

Dry fluff pulp sheet additive

#63
20160201261
2016-07-14

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

#64
20160168796
2016-06-16

Process for making hydrogels from hemicaustic byproduct

#65
20160153144
2016-06-02

A METHOD OF PRODUCING OXIDIZED OR MICROFIBRILLATED CELLULOSE

#66
20160130751
2016-05-12

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

#67
20160032524
2016-02-04

Low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same

#68
20150292151
2015-10-15

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

#69
20150252531
2015-09-10

Process for making partly-hydrolyzed cellulose using compressed cellulosic materials

#70
20150203737
2015-07-23

Plant derived cellulose compositions for use as drilling muds

#71
20150167244
2015-06-18

METHOD AND A SYSTEM FOR PRECIPITATION OF CALCIUM CARBONATE AND A PRODUCT COMPRISING CALCIUM CARBONATE

#72
20150167243
2015-06-18

Energy efficient process for preparing nanocellulose fibers

#73
20150158955
2015-06-11

Low energy method for the preparation of non-derivatized nanocellulose

#74
20150136346
2015-05-21

Process and a dissolving pulp manufactured by the process

#75
20150122730
2015-05-07

OXYGEN TREATMENT OF WATER AND PULP FROM PAPER OR CARDBOARD PRODUCTION

#76
20150040798
2015-02-12

Method for producing water-soluble cellulose ether having low degree of polymerization and method for producing film coating composition comprising same

#77
20140370179
2014-12-18

Process for the production of nano-fibrillar cellulose gels

#78
20140274680
2014-09-18

Low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same

#79
20140114059
2014-04-24

Method and a system for manufacturing cellulosic material

#80
20140073777
2014-03-13

Method for producing alkali cellulose

#81
20140014283
2014-01-16

Single-step method for production of nano pulp by acceleration and disintegration of raw material

#82
20140000825
2014-01-02

Chemical Activation and Refining of Southern Pine Kraft Fibers

#83
20130324710
2013-12-05

Process for the derivatization of cellulose

#84
20130203981
2013-08-08

Method to product microcellulose

#85
20130139980
2013-06-06

Method and system for producing market pulp and products thereof

#86
20130066291
2013-03-14

Ligno cellulosic materials and the products made therefrom

#87
20120322997
2012-12-20

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

#88
20120107480
2012-05-03

Process for the production of nano-fibrillar cellulose gels

#89
20110287275
2011-11-24

Ligno cellulosic materials and the products made therefrom

#90
20110272110
2011-11-10

Method and system for high alpha dissolving pulp production

#91
20110272109
2011-11-10

Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse

#92
20110209839
2011-09-01

Method for making absorbent products

#93
20110174455
2011-07-21

Compositions and processes for paper production

#94
20110108227
2011-05-12

Process For Applying Composition Containing A Cationic Trivalent Metal And Debonder And Fluff Pulp Sheet Made From Same

#95
20110034891
2011-02-10

Dry fluff pulp sheet additive

#96
20100212853
2010-08-26

Fiber loading improvements in papermaking

#97
20100006246
2010-01-14

Process for increasing bulk of a fiber product, fiber product and use thereof

#98
20100003296
2010-01-07

MANUFACTURING METHODS AND APPLICATIONS OF ANTIMICROBIAL PLANT FIBERS HAVING SILVER PARTICLES

#99
20090312536
2009-12-17

Process for producing a pulp

#100
20090229772
2009-09-17

Bleached, mechanical paper pulp and the production method therefor

#101
20090176646
2009-07-09

Catalyst support using cellulose fibers, preparation method thereof, supported catalyst comprising nano-metal catalyst supported on carbon nanotubes directly grown on surface of the catalyst support, and method of preparing the supported catalyst

#102
20090054863
2009-02-26

Chemical activation and refining of southern pine kraft fibers

#103
20080210391
2008-09-04

METHOD FOR LOADING FIBERS CONTAINED IN A PULP SUSPENSION

#104
20080076956
2008-03-27

Lignocellulose-based anion-adsorbing medium (LAM) and process for making and using same for the selective removal of phosphate and arsenic anionic contaminants from aqueous solutions

#105
20080017337
2008-01-24

Compositions and processes for paper production

#106
20070272377
2007-11-29

Fully Closed, Zero Discharge, Clean Oxidizing Pulping Technology and Process

#107
20070119561
2007-05-31

METHOD AND APPARATUS OF THE PREPARTION OF A FIBROUS STOCK SUSPENSION

#108
20070119556
2007-05-31

Chemical activation and refining of southern pine kraft fibers

#109
20070107862
2007-05-17

Sodium sulfate treated pulp

#110
20070062652
2007-03-22

Method for charging a fibre suspension and arrangement for carrying out said method

#111
20070062009
2007-03-22

Cotton fiber particulate and method of manufacture

#112
20070051480
2007-03-08

Method and apparatus for loading a fibrous stock suspension

#113
20070025904
2007-02-01

Preparation of a composition comprising an alkaline earth metal oxide and a substrate having a reduced amount of grit

#114
20060260773
2006-11-23

Lignocellulosic materials and the products made therefrom

#115
20060229393
2006-10-12

Compositions and methods for enhancing brightness and brightness stabilization in papermaking

#116
20060144535
2006-07-06

Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board

#117
20060144532
2006-07-06

Mercerization process of pulp to produce high porous material

#118
20060113051
2006-06-01

Method for creating a fibrous substance suspension used for producing a tissue web or hygiene web

#119
20050223501
2005-10-13

Method for making bleached crosslinked cellulosic fibers with high color and brightness

#120
20050178518
2005-08-18

Sodium sulfate treated pulp

#121
20050098503
2005-05-12

Lignocellulose-based anion-adsorbing medium (LAM) and process for making and using same for the selective removal of phosphate and arsenic anionic contaminants from aqueous solutions

#122
20050061455
2005-03-24

Chemical activation and refining of southern pine kraft fibers

#123
20050045288
2005-03-03

Bleached, mechanical paper pulp and the production method therefor

#124
20050011621
2005-01-20

Lignocellulose product

#125
15353390
2017-11-28

Specialty pulp with high intrinsic viscosity

#126
14934115
2016-08-23

Apparatus and process for treatment of biocomponents

#127
14208759
2016-03-29

Methods for the manufacture of cellulose nanocrystals