ClassID:

126355

D21C3/20 - CPC Classification

Classification description:

Pulping cellulose-containing materials with organic solvents or in solvent environment

Recent Application in this class:
#1
20260043196
2026-02-12

METHOD FOR PROCESSING BLACK LIQUOR IN PULP PRODUCTION

#2
20250369183
2025-12-04

USE OF IN-SITU IONIC LIQUID (IL) AND DEEP EUTECTIC SOLVENT (DES) SYNTHESIS USING CHEMICALLY SYNTHESIZED OR BIOMASS-DERIVED IONS IN THE PRETREATMENT OF BIOMASS

#3
20250341054
2025-11-06

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

#4
20250340673
2025-11-06

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

#5
20250215642
2025-07-03

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

#6
20250146217
2025-05-08

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

#7
20250075427
2025-03-06

CATALYST FREE ORGANOSOLV PROCESS, SYSTEM, AND METHOD FOR FRACTIONATION OF LIGNOCELLULOSIC MATERIALS AND BIOPRODUCTS RECOVERY

#8
20250059709
2025-02-20

NANOCELLULOSE-REINFORCED CORRUGATED MEDIUM

#9
20250059707
2025-02-20

NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL

#10
20250043507
2025-02-06

USE OF A MODIFIED ACID IN DUAL PURPOSE BIOMASS DELIGNIFICATION

#11
20240401270
2024-12-05

PROCESS FOR TREATMENT OF BIOMASS FOR PULPING AND BIOREFINERY APPLICATIONS

#12
20240328084
2024-10-03

DELIGNIFICATION OF MATERIALS IN DEEP EUTECTIC SOLVENTS

#13
20240295073
2024-09-05

MODIFIED SULFURIC ACID AND USES THEREOF

#14
20240279406
2024-08-22

NEW METHOD

#15
20240247081
2024-07-25

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

#16
20240175206
2024-05-30

METHOD FOR PRODUCING PRODUCTS BASED ON NON-WOODY BIOMASS AS RAW MATERIAL

#17
20240102241
2024-03-28

INTEGRATED KRAFT PULP MILL AND THERMOCHEMICAL CONVERSION SYSTEM

#18
20230349102
2023-11-02

Vegetable Paper Comprising Fibres of a Plant

#19
20230323597
2023-10-12

Method for separating biomass components by ternary system

#20
20230265611
2023-08-24

A HIGH YIELD COOKING METHOD

#21
20230124761
2023-04-20

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

#22
20230116383
2023-04-13

Methods for preparing thermally stable lignin fractions

#23
20230002972
2023-01-05

Nanocellulose-reinforced corrugated medium

#24
20220412003
2022-12-29

Polymer coated paper recycling process and composition

#25
20220396917
2022-12-15

Integrated kraft pulp mill and thermochemical conversion system

#26
20220340730
2022-10-27

METHOD FOR RECYCLING WASTE ARAMID-MICA COMPOSITE PAPER

#27
20220333302
2022-10-20

Pulping Liquors and Uses Thereof

#28
20220243399
2022-08-04

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

#29
20220213276
2022-07-07

PROCESSES FOR BIOMASS TREATMENTS

#30
20220195666
2022-06-23

USE OF A PLURALITY OF SALT IONIC LIQUIDS IN THE PRETREATMENT OF BIOMASS

#31
20220186434
2022-06-16

Combination approach to delignification of biomass under ambient conditions

#32
20220136171
2022-05-05

Method for non-catalytic delignification of biomass inside an apparatus

#33
20220127382
2022-04-28

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

#34
20220049420
2022-02-17

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

#35
20210372048
2021-12-02

Dual surfactant digester additive composition and a method for enhancing the pulping of wood chips using the same

#36
20210363696
2021-11-25

USE OF IN-SITU IONIC LIQUID (IL) AND DEEP EUTECTIC SOLVENT (DES) SYNTHESIS USING CHEMICALLY SYNTHESIZED OR BIOMASS-DERIVED IONS IN THE PRETREATMENT OF BIOMASS

#37
20210340706
2021-11-04

Nanocellulose production co-located at a pulp and paper mill

#38
20210340350
2021-11-04

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

#39
20210332530
2021-10-28

USE OF ENSILED BIOMASS FOR INCREASED EFFICIENCY OF THE PRETREATMENT OF BIOMASS

#40
20210301468
2021-09-30

Vegetable paper comprising fibres of a plant

#41
20210292968
2021-09-23

CATALYST FREE ORGANOSOLV PROCESS, SYSTEM AND METHOD FOR FRACTIONATION OF LIGNOCELLULOSIC MATERIALS AND BIOPRODUCTS RECOVERY

#42
20210284757
2021-09-16

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

#43
20210284676
2021-09-16

Renewable aromatics from lignocellulosic lignin

#44
20210207320
2021-07-08

Lignocellulosic composites prepared with aqueous alkaline and urea solutions in cold temperatures systems

#45
20210172118
2021-06-10

Repulping Method For The Removal Of Lignocellulosic Hornification

#46
20210156086
2021-05-27

Methods for the separation of baobab fibers

#47
20210095421
2021-04-01

Multi-step process for the isolation of components from

#48
20210079593
2021-03-18

Dissolution of cellulose in ionic liquids

#49
20210062416
2021-03-04

Process for refining fiber and deriving chemical co-products from biomass

#50
20210009908
2021-01-14

Lignocellulosic biomass based process for production of lignins and syngas, and electricity production efficient syngas

#51
20210002824
2021-01-07

Low energy production process for producing paper pulp from lignocellulosic biomass

#52
20200399722
2020-12-24

CO-SOLVENT TO PRODUCE REACTIVE INTERMEDIATES FROM BIOMASS

#53
20200332087
2020-10-22

A Lignin-Containing Cellulose Nanofiber, a Paper and a Film Comprising the Said Lignin-Containing Cellulose Nanofiber

#54
20200239918
2020-07-30

PROCESS FOR ENZYMATIC PRODUCTION OF OXIDATION AND REDUCTION PRODUCTS OF MIXED SUGARS

#55
20200109516
2020-04-09

Nanocellulose-reinforced corrugated medium

#56
20200002888
2020-01-02

Pulping Liquors and Uses Thereof

#57
20190153011
2019-05-23

Renewable aromatics from lignocellulosic lignin

#58
20190145050
2019-05-16

Vegetable paper comprising fibres of a plant

#59
20190136448
2019-05-09

Method for separating cellulose

#60
20190119851
2019-04-25

Lignocellulosic composites prepared with aqueous alkaline and urea solutions in cold temperatures systems and methods

#61
20190100604
2019-04-04

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

#62
20190093285
2019-03-28

Fine cellulose fiber and production method for same

#63
20190062359
2019-02-28

ORGANOSOLV PROCESS FOR THE EXTRACTION OF HIGHLY PURE LIGNIN AND PRODUCTS COMPRISING THE SAME

#64
20190040479
2019-02-07

Ionic liquid and method for dissolving cellulose using the same

#65
20190031797
2019-01-31

Ionic polymers and use thereof in processing of biomass

#66
20180327969
2018-11-15

Treatment of lignocellulosic biomass with ionic liquid

#67
20180251941
2018-09-06

NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL

#68
20180216142
2018-08-02

PROCESS FOR ENZYMATIC PRODUCTION OF OXIDATION AND REDUCTION PRODUCTS OF MIXED SUGARS

#69
20180215893
2018-08-02

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

#70
20180179369
2018-06-28

THERMOPLASTIC RESIN COMPOSITION AND METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION

#71
20180171552
2018-06-21

Method for producing cellulose-containing solid material and method for producing glucose

#72
20180148804
2018-05-31

Integrated methods for treating lignocellulosic material

#73
20180119344
2018-05-03

Methods and systems for solvent purification

#74
20180105890
2018-04-19

Ionic liquid and method for dissolving cellulose using the same

#75
20180094383
2018-04-05

Methods for the production of high solids nanocellulose

#76
20180079766
2018-03-22

Methods for preparing thermally stable lignin fractions

#77
20180016355
2018-01-18

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

#78
20170369802
2017-12-28

Pulping Liquors and Uses Thereof

#79
20170328003
2017-11-16

Nanocellulose-reinforced corrugated medium

#80
20170247835
2017-08-31

METHOD FOR PRECIPITATING LIGNIN FROM ORGANOSOLV PULPING LIQUORS

#81
20170247834
2017-08-31

Comprehensive process for selectively separating lignocellulosic biomass into purified components with high yield

#82
20170241076
2017-08-24

Pretreatment process of lignocellulosic biomass

#83
20170226695
2017-08-10

Integrated Kraft pulp mill and thermochemical conversion system

#84
20170218287
2017-08-03

Pulping liquors and uses thereof

#85
20170210827
2017-07-27

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

#86
20160326204
2016-11-10

PROCESS FOR PREPARING NON-PYROLYTIC BIO-OIL FROM LIGNOCELLULOSIC MATERIALS

#87
20160237173
2016-08-18

NANOCELLULOSE PRODUCTION USING LIGNOSULFONIC ACID

#88
20160222586
2016-08-04

Processes for producing cellulose pulp and pulp-derived products from lignocellulosic biomass

#89
20160185810
2016-06-30

RESIN COMPOSITIONS COMPRISING LIGNIN DERIVATIVES

#90
20160152736
2016-06-02

Process for the organosolv treatment of lignocellulosic biomass

#91
20160122379
2016-05-05

Renewable aromatics from lignocellulosic lignin

#92
20160102113
2016-04-14

Methods for preparing thermally stable lignin fractions

#93
20160097000
2016-04-07

Methods and systems for processing cellulosic biomass

#94
20160096999
2016-04-07

Methods and systems for processing cellulosic biomass

#95
20160096995
2016-04-07

Methods and systems for processing cellulosic biomass

#96
20160076112
2016-03-17

Co-solvent to produce reactive intermediates from biomass

#97
20160040354
2016-02-11

Treatment

#98
20160032021
2016-02-04

Method of producing regenerated cellulose and hemicellulose

#99
20160024712
2016-01-28

Process for the treatment of lignocellulosic biomass

#100
20160017540
2016-01-21

PRETREATMENT AND FRACTIONATION OF LIGNOCELLULOSIC BIOMASS

#101
20160002850
2016-01-07

Biomass process optimisation

#102
20150322214
2015-11-12

Renewable aromatics from lignocellulosic lignin

#103
20150321120
2015-11-12

Methods and systems for solvent purification

#104
20150284908
2015-10-08

Methods of preserving starch in pulp and controlling calcium precipitation and/or scaling

#105
20150275432
2015-10-01

Integration of non-woody biorefining at pulp and paper plants

#106
20150259709
2015-09-17

PROCESSES FOR PRODUCING FLUFF PULP AND ETHANOL FROM SUGARCANE

#107
20150041084
2015-02-12

Processes for Purifying a Cellulosic Material

#108
20150007952
2015-01-08

Method for producing a cellulose suspension

#109
20140326422
2014-11-06

Integrated Processes for Purifying a Cellulosic Material

#110
20140326421
2014-11-06

Processes for Purifying a Cellulosic Material

#111
20140275515
2014-09-18

Methods for digestion of cellulosic biomass solids in the presence of a phenolic solvent generated in situ from lignin

#112
20140275513
2014-09-18

Methods for digestion of cellulosic biomass solids in the presence of a phenolic solvent generated in situ from lignin

#113
20140246160
2014-09-04

Method to preserve native starch present in pulp in a papermaking process

#114
20140186899
2014-07-03

Biomass fractionation processes employing sulfur dioxide

#115
20140166220
2014-06-19

Method to produce high-resistance cellulose and hemicellulose fibers from lignocellulosic biomass of sugarcane leaves and buds

#116
20140121418
2014-05-01

Method and systems for processing lignin during hydrothermal digestion of cellulosic biomass solids while producing a monohydric alcohol feed

#117
20140117277
2014-05-01

Methods and systems for processing lignin during hydrothermal digestion of cellulosic biomass solids

#118
20140106426
2014-04-17

Separation of lignin from hydrolyzate

#119
20140096922
2014-04-10

Processes for producing cellulose pulp, sugars, and co-products from lignocellulosic biomass

#120
20140073016
2014-03-13

Treatment of biomass to dissolve lignin with ionic liquid composition

#121
20140048223
2014-02-20

Methods for removing hemicellulose

#122
20140048222
2014-02-20

Methods for removing hemicellulose

#123
20140038246
2014-02-06

Method for producing lignin derivatives

#124
20140024093
2014-01-23

PROCESS FOR THE PRODUCTION OF DIGESTED BIOMASS USEFUL FOR CHEMICALS AND BIOFUELS

#125
20140004582
2014-01-02

Conditioning of SO2-ethanol-water spent liquor for fermentation by clostridia

#126
20130319627
2013-12-05

Methods of preserving starch in pulp and controlling calcium precipitation and/or scaling

#127
20130292070
2013-11-07

Procedure for obtaining nanofibrillated cellulose from recovered paper

#128
20130248128
2013-09-26

Process for decomposing lignin in biomass

#129
20130178563
2013-07-11

Processes for recovery of derivatives of native lignin

#130
20130172628
2013-07-04

ORGANOSOLV PROCESS

#131
20130167603
2013-07-04

METHODS AND SYSTEMS FOR PROCESSING PLANTS AND CONVERTING CELLULOSIC RESIDUE TO CRUDE BIO-OILS

#132
20130153163
2013-06-20

Method of dissolving lignocellulosic materials

#133
20130139812
2013-06-06

Method for liquefying biomass

#134
20130012610
2013-01-10

LIGNIN AND OTHER PRODUCTS ISOLATED FROM PLANT MATERIAL, METHODS FOR ISOLATION AND USE, AND COMPOSITIONS CONTAINING LIGNIN AND OTHER PLANT-DERIVED PRODUCTS

#135
20130005952
2013-01-03

Recovery of lignin and water soluble sugars from plant materials

#136
20120329146
2012-12-27

Lignin-solvent fuel and method and apparatus for making same

#137
20120305207
2012-12-06

METHOD FOR VAPOR PHASE PULPING WITH ALCOHOL AND SULFUR DIOXIDE

#138
20120270269
2012-10-25

Organic solvent pretreatment of biomass to enhance enzymatic saccharification

#139
20120264173
2012-10-18

Organic solvent pretreatment of biomass to enhance enzymatic saccharification

#140
20120202253
2012-08-09

ALCOHOL SULFITE BIOREFINERY PROCESS

#141
20120184721
2012-07-19

METHOD FOR SEPARATING CARBOHYDRATE FROM LIGNOCELLULOSIC SOLID

#142
20120167874
2012-07-05

Methods and systems for solvent purification

#143
20120136097
2012-05-31

Resin compositions comprising lignin derivatives

#144
20120132379
2012-05-31

Method for obtaining cellulose from biomass comprising lignocellulose

#145
20120022240
2012-01-26

LIGNIN PREPARATIONS ISOLATED FROM PLANT MATERIAL, AND METHODS FOR THEIR ISOLATION AND USE

#146
20120006501
2012-01-12

Method for preparing nonwood fiber paper

#147
20110287502
2011-11-24

Methods and apparatus for processing cellulosic biomass

#148
20110282038
2011-11-17

RECOVERY OF LIGNIN AND WATER SOLUBLE SUGARS FROM PLANT MATERIALS

#149
20110165643
2011-07-07

Separation of lignin from hydrolyzate

#150
20110143412
2011-06-16

Method and apparatus for pretreating biomass using internal heat

#151
20110111474
2011-05-12

Method for producing ethanol by fermentation from lignocellulosic biomass

#152
20110108223
2011-05-12

Method for vapor phase pulping with alcohol, sulfur dioxide and ammonia

#153
20110105737
2011-05-05

METHOD FOR PRETREATING PLANT STARTING MATERIAL FOR THE PRODUCTION, FROM SACCHARIFEROUS AND LIGNOCELLULOSIC RESOURCES, OF BIOETHANOL AND OF SUGAR, AND PLANT

#154
20110003352
2011-01-06

PROCESS FOR THE STEPWISE TREATMENT OF LIGNOCELLULOSIC MATERIAL TO PRODUCE REACTIVE CHEMICAL FEEDSTOCKS

#155
20100319862
2010-12-23

Ionic liquid systems for the processing of biomass, their components and/or derivatives, and mixtures thereof

#156
20100285550
2010-11-11

Delignification of Lignocellulose-Containing Material

#157
20100269990
2010-10-28

Separation of reactive cellulose from lignocellulosic biomass with high lignin content

#158
20100263812
2010-10-21

SYSTEM AND METHOD FOR REPULPING OF PAPER PRODUCTS AND IMPROVEMENT OF WATER QUALITY WITH DIPOLAR SOLVENTS AND RECOVERY

#159
20100200182
2010-08-12

Process for refining and producing cellulose, lignin and xylose from biomass material

#160
20100190973
2010-07-29

SINGLE STEP PROCESS FOR SEPARATING BIOMASS COMPONENTS

#161
20100159522
2010-06-24

ORGANOSOLV AND OZONE TREATMENT OF BIOMASS TO ENHANCE ENZYMATIC SACCHARIFICATION

#162
20100159521
2010-06-24

OZONE TREATMENT OF BIOMASS TO ENHANCE ENZYMATIC SACCHARIFICATION

#163
20100159520
2010-06-24

Organic solvent pretreatment of biomass to enhance enzymatic saccharification

#164
20100159519
2010-06-24

Organic solvent pretreatment of biomass to enhance enzymatic saccharification

#165
20100159516
2010-06-24

Organic solvent pretreatment of biomass to enhance enzymatic saccharification

#166
20100136642
2010-06-03

Recovery of lignin and water soluble sugars from plant materials

#167
20090236060
2009-09-24

Method for vapor phase pulping with alcohol and sulfur dioxide

#168
20090145021
2009-06-11

Lignin-solvent fuel and method and apparatus for making same

#169
20090069550
2009-03-12

Methods for isolating and harvesting lignin and isolated lignin preparations produced using the methods

#170
20090065158
2009-03-12

Installation for implementing a method for producing paper pulp, lignins and sugars and production method using such an installation

#171
20090062516
2009-03-05

LIGNIN AND OTHER PRODUCTS ISOLATED FROM PLANT MATERIAL, METHODS FOR ISOLATION AND USE, AND COMPOSITIONS CONTAINING LIGNIN AND OTHER PLANT-DERIVED PRODUCTS

#172
20090014138
2009-01-15

Production of pulp using a gaseous organic agent as heating and reaction-accelerating media

#173
20080202504
2008-08-28

Process for rapid acid hydrolysis of lignocellulosic material and in a hydrolysis reactor

#174
20080196847
2008-08-21

Pre-extraction and solvent pulping of lignocellulosic material

#175
20080023162
2008-01-31

Dissolution Method

#176
20070259412
2007-11-08

Integrated processing of plant biomass

#177
20070254348
2007-11-01

METHOD FOR THE PRODUCTION OF FERMENTABLE SUGARS AND CELLULOSE FROM LIGNOCELLULOSIC MATERIAL

#178
20070215300
2007-09-20

Solvents For Use In The Treatment Of Lignin-Containing Materials

#179
20070199669
2007-08-30

Method for making natural cellulosic fiber bundles from cellulosic sources

#180
20060241287
2006-10-26

Extracting biopolymers from a biomass using ionic liquids

#181
12338593
2015-07-28

Copper complexes and their use as wood preservatives