ClassID:

126394

D21C9/10 - 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 Bleaching ; Apparatus therefor

Sub-classes:
Recent Application in this class:
#1
20260109646
2026-04-23

COLLAPSIBLE ENGAGEMENT MECHANISM

#2
20250340673
2025-11-06

PROCESSES AND APPARATUS FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM

#3
20250270768
2025-08-28

PACKAGING PAPER

#4
20250257527
2025-08-14

SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM

#5
20250116065
2025-04-10

DISPERSIBLE NON-WOOD PULP

#6
20250059707
2025-02-20

NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL

#7
20250043508
2025-02-06

PROCESSES AND SYSTEMS FOR PRODUCING NANOCELLULOSE FROM OLD CORRUGATED CONTAINERS

#8
20250027270
2025-01-23

A method, uses of the same, a pulp composition, and a system

#9
20240336526
2024-10-10

Crystalline Cellulose Reinforced Cement

#10
20240247081
2024-07-25

PROCESSES AND APPARATUS FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM

#11
20240003087
2024-01-04

Dispersible non-wood pulp

#12
20230124761
2023-04-20

METHODS AND SYSTEMS FOR PROCESSING MIXED TEXTILE FEEDSTOCK, ISOLATING CONSTITUENT MOLECULES, AND REGENERATING CELLULOSIC AND POLYESTER FIBERS

#13
20230073443
2023-03-09

METHOD FOR MANUFACTURING BLEACHED PULP FROM A FEEDSTOCK COMPRISING RECYCLED PAPER

#14
20230016500
2023-01-19

COLLAPSIBLE ENGAGEMENT MECHANISM

#15
20220372707
2022-11-24

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

#16
20220243399
2022-08-04

Common preparation of lignocellulosic feedstock and a product containing cellulose but free from lignin

#17
20220243395
2022-08-04

PROCESS FOR CONTINUOUSLY PREPARING A BROKEN-UP CELLULOSE-CONTAINING STARTING MATERIAL

#18
20220195667
2022-06-23

Method and apparatus for treating lignocellulosic material

#19
20220162799
2022-05-26

METHOD FOR PRODUCING PARENCHYMAL CELL CELLULOSE

#20
20220127789
2022-04-28

Method for producing cellulose pulp, cellulose pulp and use thereof, paper

#21
20220034038
2022-02-03

Sulfite-based processes for producing nanocellulose, and compositions and products produced therefrom

#22
20210355636
2021-11-18

Continuous process for production of cellulose pulp from grass-like feedstock

#23
20210340706
2021-11-04

Nanocellulose production co-located at a pulp and paper mill

#24
20210340350
2021-11-04

Methods and systems for processing mixed textile feedstock, isolating constituent molecules, and regenerating cellulosic and polyester fibers

#25
20210284757
2021-09-16

Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom

#26
20210277151
2021-09-09

Processes for producing nanocellulose, and nanocellulose compositions produced therefrom

#27
20210221919
2021-07-22

Nanolignocellulose compositions and processes to produce these compositions

#28
20210172117
2021-06-10

Fiber production with supercritical fluid phase from cotton straw

#29
20210148048
2021-05-20

Processes and systems for producing nanocellulose from old corrugated containers

#30
20210086171
2021-03-25

Far superior oxidation catalysts based on macrocyclic compounds

#31
20210040688
2021-02-11

METHOD OF PRODUCING DISSOLVING PULP

#32
20200392255
2020-12-17

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

#33
20200332466
2020-10-22

BLEACHING AND SHIVE REDUCTION PROCESS FOR NON-WOOD FIBERS

#34
20200308765
2020-10-01

Method for producing parenchymal cell cellulose

#35
20200283953
2020-09-10

Processes and systems for the pulping of lignocellulosic materials

#36
20200256015
2020-08-13

Cannabis fiber, absorbent cellulosic structures containing cannabis fiber and methods of making the same

#37
20200079692
2020-03-12

Crystalline cellulose reinforced cement

#38
20200077790
2020-03-12

Collapsible engagement mechanism

#39
20200032455
2020-01-30

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

#40
20190301094
2019-10-03

Process of producing nanofibrillated cellulose with low energy consumption

#41
20190284760
2019-09-19

Method And System For Producing Market Pulp And Products Thereof

#42
20190276636
2019-09-12

Composite cellulose material obtained from coffee husks or cocoa shells, an article comprising same and a method for producing said material

#43
20190271114
2019-09-05

SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM

#44
20190136448
2019-05-09

Method for separating cellulose

#45
20190100604
2019-04-04

Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom

#46
20190062999
2019-02-28

Method for producing cellulose pulp, cellulose pulp and use thereof, paper

#47
20190010660
2019-01-10

Process for producing cellulose with low impurities from sugarcane bagasse

#48
20180304247
2018-10-25

Far superior oxidation catalysts based on macrocyclic compounds

#49
20180298113
2018-10-18

NANOLIGNOCELLULOSE COMPOSITIONS AND PROCESSES TO PRODUCE THESE COMPOSITIONS

#50
20180245288
2018-08-30

Cannabis fiber, absorbent cellulosic structures containing cannabis fiber and methods of making the same

#51
20180215893
2018-08-02

Methods and systems for processing mixed textile feedstock, isolating constituent molecules, and regenerating cellulosic and polyester fibers

#52
20180179703
2018-06-28

Process for producing a nanofibrillar cellulose hydrogel

#53
20180163344
2018-06-14

Method for reducing pulp viscosity in production of dissolving pulp

#54
20180135245
2018-05-17

Modified cellulose from chemical fiber and methods of making and using the same

#55
20180127919
2018-05-10

Process for producing increased bulk pulp fibers, pulp fibers obtained, and products incorporating same

#56
20180105982
2018-04-19

Processes and systems for the pulping of lignocellulosic materials

#57
20170314196
2017-11-02

A CELLULOSE PRODUCTION METHOD

#58
20170284020
2017-10-05

Methods for producing raw materials from plant biomass

#59
20170210827
2017-07-27

Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom

#60
20170210826
2017-07-27

PROCESSES FOR PRODUCING NANOCELLULOSE, AND NANOCELLULOSE COMPOSITIONS PRODUCED THEREFROM

#61
20170198439
2017-07-13

Use of surfactant to treat pulp and improve the incorporation of kraft pulp into fiber for the production of viscose and other secondary fiber products

#62
20170152632
2017-06-01

Manufacturing feedstock from fruit by-product processing

#63
20170107665
2017-04-20

Continuous process for production of cellulose pulp from grass-like plant feedstock

#64
20170002514
2017-01-05

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

#65
20160298294
2016-10-13

Method for delignifying and bleaching pulp

#66
20160289893
2016-10-06

Nanocellulose

#67
20160289793
2016-10-06

Method for leaching recovery-boiler ash

#68
20160281298
2016-09-29

SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM

#69
20160273162
2016-09-22

Pineapple leaf fiber fine treatment method

#70
20160271984
2016-09-22

Printing paper and method for producing printed material

#71
20160237173
2016-08-18

NANOCELLULOSE PRODUCTION USING LIGNOSULFONIC ACID

#72
20160138219
2016-05-19

Compositions for bleaching pulps and their use

#73
20160130762
2016-05-12

Cannabis fiber, absorbent cellulosic structures containing cannabis fiber and methods of making the same

#74
20160040356
2016-02-11

METHOD AND ASSEMBLY FOR PROCESSING CELLULOSE PULP OF WOOD PROCESSING INDUSTRY

#75
20150361616
2015-12-17

PROCESS FOR ISOLATING CELLULOSE FROM CELLULOSIC BIOMASS, ISOLATED CELLULOSE OF TYPE I AND COMPOSITE MATERIALS COMPRISING SAME

#76
20150337486
2015-11-26

Bleaching and shive reduction process for non-wood fibers

#77
20150292151
2015-10-15

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

#78
20150275432
2015-10-01

Integration of non-woody biorefining at pulp and paper plants

#79
20150267342
2015-09-24

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

#80
20150240414
2015-08-27

Chain, continuous and no-waste method for degumming and fiber-separating the ramie

#81
20150184345
2015-07-02

Sulfite-based processes for producing nanocellulose, and compositions and products produced therefrom

#82
20150139977
2015-05-21

XYLANASES, NUCLEIC ACIDS ENCODING THEM AND METHODS FOR MAKING AND USING THEM

#83
20150101773
2015-04-16

Fruit fiber article and manufacturing thereof

#84
20150101771
2015-04-16

Manufacturing feedstock from fruit by-product processing

#85
20150064331
2015-03-05

METHOD AND A SYSTEM FOR ISOLATING XYLAN FROM PLANT MATERIAL, AS WELL AS XYLAN

#86
20140369156
2014-12-18

Mixing unit for use in a mixing apparatus and a mixing apparatus

#87
20140350144
2014-11-27

BIOCOMPOSITE MATERIAL

#88
20140305603
2014-10-16

PROCESS FOR MAKING PULP

#89
20140231034
2014-08-21

Enzymatic pretreatment of wood in a method for producing mechanical paper pulp

#90
20140174679
2014-06-26

BCTMP filtrate recycling system and method

#91
20130276999
2013-10-24

Fruit fiber processing system and method

#92
20130081768
2013-04-04

Catalytic carboxylation of cellulose fibers in a continuous process with multiple additions of catalyst, secondary oxidant and base to a moving slurry of cellulose fibers

#93
20130000859
2013-01-03

APPARATUS TO ENHANCE FIBER DEVELOPMENT BY ADDITION OF TREATMENT AGENT DURING MECHANICAL PULPING

#94
20120302490
2012-11-29

Bleach catalyst compounds, method for the production thereof and use thereof

#95
20120193050
2012-08-02

Method and assembly for processing cellulose pulp of wood processing industry

#96
20120186762
2012-07-26

PRODUCING HALF-STUFFS FOR THE MANUFACTURE OF PAPERY ARTICLES

#97
20120125370
2012-05-24

Method and apparatus for filling and cleaning a pulp tower

#98
20120118518
2012-05-17

METHOD FOR MANUFACTURING PAPERMAKING PULP

#99
20120094335
2012-04-19

laccase and variants and fragments thereof

#100
20120061043
2012-03-15

Process for the bleaching of mechanical paper pulp

#101
20120031575
2012-02-09

Pulp Bleaching and Alkaline Extraction Method

#102
20120006501
2012-01-12

Method for preparing nonwood fiber paper

#103
20120000621
2012-01-05

Shaped cellulose manufacturing process combined with a pulp mill recovery system

#104
20110232853
2011-09-29

BCTMP filtrate recycling system and method

#105
20110214825
2011-09-08

METHOD FOR MANUFACTURING MECHANICAL PULP AND USE OF THE MECHANICAL PULP

#106
20110186250
2011-08-04

Continuous digestion of chip blends containing a western red cedar chip furnish

#107
20110124898
2011-05-26

Chemical and method for chelating metal ions included in water and separating/recovering of formed chelate

#108
20110108222
2011-05-12

EFFECT OF LOW DOSE XYLANASE ON PULP IN PREBLEACH TREATMENT PROCESS

#109
20110104044
2011-05-05

DIRECT SYNTHESIS OF AQUEOUS HYDROGEN PEROXIDE SOLUTION AT THE SITE OF A PAPER MILL

#110
20100324334
2010-12-23

Alkali metal salt of glutamic acid N,N-diacetic acid, a process to prepare such salt, and the use thereof

#111
20100243184
2010-09-30

Method for treating liquid flows at a chemical pulp mill

#112
20100222610
2010-09-02

Glutamic acid N,N-diacetic amide, glutamic acid N-acetic amide N-acetonitrile, alkali metal salts thereof, process to prepare them and their use

#113
20100175840
2010-07-15

HIGH YIELD AND ENHANCED PERFORMANCE FIBER

#114
20100175839
2010-07-15

PROCESS FOR ADJUSTING THE PH OF A CELLULOSIC PULP, PRODUCTION OF PULP OR PAPER FROM CELLULOSIC PULP AND USE OF (BI)CARBONATE REMOVAL FOR REDUCING THE CONSUMPTION OF ACID

#115
20100132899
2010-06-03

Method and apparatus for filling and cleaning a pulp tower

#116
20100132898
2010-06-03

Process for the production of bleached wood particles and pale to white wood-base materials

#117
20100084101
2010-04-08

METHOD FOR FUNCTIONALISING CARBOHYDRATES

#118
20100024997
2010-02-04

PROCESS FOR THE DERESINATION OF PULP AND USE OF CARBON DIOXIDE OR (BI) CARBONATE THEREFOR

#119
20090281302
2009-11-12

Method of recycling fibers from sewage sludge and means thereof

#120
20090221039
2009-09-03

FUSION PROTEINS BETWEEN PLANT CELL-WALL DEGRADING ENZYMES AND A SWOLLENIN, AND THEIR USES

#121
20090165968
2009-07-02

Modified Kraft fibers

#122
20090155238
2009-06-18

Xylanases, nucleic acids encoding them and methods for making and using them

#123
20090151880
2009-06-18

Method and system to enhance fiber development by addition of treatment agent during mechanical pulping

#124
20090025892
2009-01-29

Method to recover chemicals in mechanical pulping

#125
20080295982
2008-12-04

Process for Producing Fiber Pulp Utilizing Bamboo and Pulp Produced Using the Same

#126
20080289783
2008-11-27

Method of degumming cellulosic fibres

#127
20080264586
2008-10-30

Treatment of Pulp

#128
20080236771
2008-10-02

SYSTEM AND METHOD FOR CONTROLLING A PROCESSOR INCLUDING A DIGESTER UTILIZING TIME-BASED ASSESSMENTS

#129
20080075900
2008-03-27

Biocomposite material

#130
20070125507
2007-06-07

Process of producing high-yield pulp

#131
20070051481
2007-03-08

Modified kraft fibers

#132
20070034345
2007-02-15

PROCESS FOR ORGANOSOLV PULPING AND USE OF A GAMMA LACTONE IN A SOLVENT FOR ORGANOSOLV PULPING

#133
20070000628
2007-01-04

Method for removal of metals from a bleach plant filtrate stream

#134
20070000627
2007-01-04

Modified kraft fibers

#135
20060207734
2006-09-21

Chemical oxidation for cellulose separation with a hypochlorite and peroxide mixture

#136
20060191651
2006-08-31

Method for converting an up-flow tower for cellulose pulp to a down-flow tower

#137
20060185808
2006-08-24

Fixation of optical brightening agents onto papermaking fiber

#138
20060144533
2006-07-06

Method for the production of improved pulp

#139
20060140049
2006-06-29

Apparatus for mixing a chemical medium with a pulp suspension

#140
20060133195
2006-06-22

Apparatus for mixing a chemical medium with a pulp suspension

#141
20060124259
2006-06-15

Process and arrangement for replacing intra-fiber liquid in fibers with a replacement liquid

#142
20060113048
2006-06-01

Method for washing pulp in a bleaching line and a bleaching line

#143
20060108083
2006-05-25

Process and device to disperge a recycled fibre pulp

#144
20060090866
2006-05-04

Method for washing pulp in a bleaching line

#145
20060090865
2006-05-04

Method of bleaching cellulose pulp and bleaching line therefore

#146
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

#147
20060065377
2006-03-30

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

#148
20060021724
2006-02-02

Process for bio-bleaching of kraft pulp using bacterial consortia

#149
20060016751
2006-01-26

Method of concentrating pulp mill extracts

#150
20050269049
2005-12-08

Light-stable and process-stable lignocellulosic materials and their production

#151
20050217810
2005-10-06

Bleached polyacrylic acid crosslinked cellulosic fibers

#152
20050173083
2005-08-11

Optical brightener for aqueous high yield pulp and process for making brightened paper

#153
20050150619
2005-07-14

Xylanase treatment of chemical pulp

#154
20050121158
2005-06-09

Method and system for the treatment of pulp prior to ozone bleaching

#155
20050115692
2005-06-02

Method for the production of improved pulp

#156
20050098037
2005-05-12

Method for the treatment of waste gas from a cellulose plant

#157
20050061460
2005-03-24

Method and arrangement for oxygen delignification of cellulose pulp

#158
20050051286
2005-03-10

Method of curling fiber and absorbent sheet containing same

#159
20050028952
2005-02-10

Apparatus for making carboxylated pulp fibers