ClassID:

126335

D21C1/06 - CPC Classification

Classification description:

Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds

Recent Application in this class:
#1
20250207328
2025-06-26

DESILICATION AND MANUFACTURE OF LOW CARBON INTENSITY CHEMI-MECHANICAL NON-WOOD PULP AND CO-PRODUCTS

#2
20250043512
2025-02-06

HIGHLY REFINED PULP FROM FIBERS OBTAINED FROM USED BEVERAGE CARTONS

#3
20240328083
2024-10-03

Method for preparing fluff pulp from bamboos and fluff pulp prepared thereby

#4
20240309586
2024-09-19

A METHOD FOR PRODUCING A CHEMI-THERMOMECHANICAL FIBROUS PULP FROM NON-WOOD PLANT RAW MATERIALS AND AN AUTOMATED LINE FOR PRODUCING SAID PULP BY SAID METHOD

#5
20230257936
2023-08-17

PAPER PULP, A METHOD FOR PRODUCING PAPER PULP, AND PAPER PULP PRODUCTS

#6
20230046123
2023-02-16

Process for producing refined cotton with high polymerization degree

#7
20220389657
2022-12-08

SYSTEM AND METHOD FOR REFINING AGRICULTURAL FIBERS TO A PULP SPECIFICATION

#8
20220205179
2022-06-30

Method for preparing unbleached biomechanical pulp from straws and full utilization of by-products

#9
20220205177
2022-06-30

Method for preparing biomechanical unbleached pulp from wheat straw and full utilization of by-products thereof

#10
20220205176
2022-06-30

Method for preparing unbleached biomechanical pulp by hot steam in coordination with biological enzyme treatment of wheat straw and full utilization of by-products thereof

#11
20220002944
2022-01-06

Method of feeding wood chips to a prehydrolysis reactor

#12
20210179737
2021-06-17

Method of producing bioplastic granules from olive pit waste (prina)

#13
20210139613
2021-05-13

METHOD FOR PRODUCTION OF CELLULOSE NANOCRYSTALS FROM MISCANTHUS GIGANTEUS AND COMPOSITES THEREFROM

#14
20210054566
2021-02-25

Method for preparing unbleached biomechanical pulp from straw

#15
20200362515
2020-11-19

Method for preparing unbleached biomechanical pulp from straw

#16
20200216760
2020-07-09

Integrated waste conversion system and method

#17
20190367955
2019-12-05

Process for the production of an organic acid from a lignocellulosic feedstock

#18
20190249363
2019-08-15

METHOD FOR EXTRACTING CELLUSOSE, HEMICELLULOSE AND LIGNIN FROM LIGNOCELLULOSE FROM PLANT BIOMASS

#19
20190194867
2019-06-27

DOUBLE ALKALI CHARGING FOR CHIP IMPREGNATION

#20
20180265598
2018-09-20

Method for production of cellulose nanocrystals from and composites therefrom

#21
20180134877
2018-05-17

Cellulose platelet compositions, methods of preparing cellulose platelet compositions and products comprising same

#22
20170362618
2017-12-21

HIGH SOLIDS ENZYMATIC HYDROLYSIS AND FERMENTATION OF PRETREATED BIOMASS

#23
20170306556
2017-10-26

Method for processing straw

#24
20170292133
2017-10-12

Preparation of lactic acid and/or a lactate salt from lignocellulosic material by separate saccharification and fermentation steps

#25
20170284020
2017-10-05

Methods for producing raw materials from plant biomass

#26
20170275818
2017-09-28

Cost efficient kraft cooking method using polysulfide cooking liquor

#27
20170218408
2017-08-03

Method for the preparation of lactic acid

#28
20170211231
2017-07-27

Methods for Treating Lignocellulosic Material

#29
20170211108
2017-07-27

Methods for hydrolysing lignocellulosic material

#30
20170058127
2017-03-02

PRODUCTION OF NANOCELLULOSE AND CARBON BLACK FROM LIGNOCELLULOSIC BIOMASS

#31
20170044712
2017-02-16

Methods for producing raw materials from plant biomass

#32
20160319043
2016-11-03

Method for production of cellulose nanocrystals from and composites therefrom

#33
20160298292
2016-10-13

Biomass treatment for hydrothermal hydrocatalytic conversion

#34
20150315744
2015-11-05

Process for treating biomass

#35
20150292151
2015-10-15

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

#36
20150068516
2015-03-12

Process for treating biomass

#37
20150059617
2015-03-05

Cellulose platelet compositions, methods of preparing cellulose platelet compositions and products comprising same

#38
20140374040
2014-12-25

Process for the production of an intermediate product intended for the production of ethanol and for the production of lignin

#39
20140299283
2014-10-09

KRAFT COOKING METHOD USING POLYSULFIDE COOKING LIQUOR

#40
20140178660
2014-06-26

Soft tissue having reduced hydrogen bonding

#41
20140138039
2014-05-22

Feeding system comprising pumps in parallel for a continuous digester

#42
20140045226
2014-02-13

PROCESS FOR TREATING LIGNOCELLULOSIC BIOMASS

#43
20130289268
2013-10-31

Process for treating biomass

#44
20130240167
2013-09-19

Method, system and withdrawal screen section for impregnating chips

#45
20130210103
2013-08-15

Methods for detoxifying a lignocellulosic hydrolysate

#46
20130139812
2013-06-06

Method for liquefying biomass

#47
20130052688
2013-02-28

METHOD FOR PRODUCING SACCHARIFICATION PRE-PROCESSED MATERIAL OF LIGNOCELLULOSE-BASED BIOMASS, AND SACCHARIFICATION PRE-PROCESSING DEVICE USING SAME

#48
20120325417
2012-12-27

Method of producing cellulose pulp

#49
20120305209
2012-12-06

HARDWOOD ALKALINE PULPING PROCESSES AND SYSTEMS

#50
20120282660
2012-11-08

Method for processing lignocellulose containing material

#51
20120214216
2012-08-23

Biomass Pretreatment Process

#52
20120168102
2012-07-05

PULPING PROCESS FOR QUALITY PROTECTION INCLUDING METHODS FOR HEMICELLULOSE EXTRACTION AND TREATMENT OF HEMICELLULOSE-EXTRACTED LIGNOCELLULOSIC MATERIALS

#53
20120125551
2012-05-24

BIOMASS PRETREATMENT PROCESS FOR A PACKED BED REACTOR

#54
20120125548
2012-05-24

CONTINUOUSLY FED BIOMASS PRETREATMENT PROCESS FOR A PACKED BED REACTOR

#55
20120111514
2012-05-10

Bagasse fractionation for cellulosic ethanol and chemical production

#56
20120064574
2012-03-15

METHOD FOR CONVERTING LIGNOCELLULOSIC BIOMASS

#57
20120012266
2012-01-19

Lignocellulosic biomass saccharification pre-treatment device

#58
20120006321
2012-01-12

ARUNDO DONAX HEMICELLULOSE RECOVERY PROCESS

#59
20110284175
2011-11-24

Increasing alkaline pulping yield for softwood with metal ions

#60
20110263004
2011-10-27

Method of treating biomass

#61
20110250638
2011-10-13

Lignocellulosic biomass conversion

#62
20110214826
2011-09-08

Process of treating a lignocellulosic material

#63
20110143412
2011-06-16

Method and apparatus for pretreating biomass using internal heat

#64
20110114876
2011-05-19

Biomass pretreatment process

#65
20110094692
2011-04-28

Methods of pretreating comminuted cellulosic material with carbonate-containing solutions

#66
20110083822
2011-04-14

Feeding system having parallel pumps for a continuous digester

#67
20110073266
2011-03-31

Feeding system having pumps in parallel for a continuous digester

#68
20100294443
2010-11-25

MANUFACTURING METHOD OF BAMBOO CHIP AND MANUFACTURING METHOD BAMBOO FIBER USING THE BAMBOO CHIP

#69
20100263813
2010-10-21

GREEN LIQUOR PRETREATMENT OF LIGNOCELLULOSIC MATERIAL

#70
20100224333
2010-09-09

METHOD AND CHEMICAL COMPOSITION TO IMPROVE EFFICIENCY OF MECHANICAL PULP

#71
20100203605
2010-08-12

Method for fractionating lignocellulose-based biomass

#72
20100175841
2010-07-15

Method for production of pulp

#73
20100121047
2010-05-13

Methods and apparatus for hydrolyzing cellulosic material

#74
20100101742
2010-04-29

Process of treating a lignocellulosic material with an alkali metal borate pre-extraction step

#75
20090165968
2009-07-02

Modified Kraft fibers

#76
20090062523
2009-03-05

Method for separating the main components of lignocellulosic materials

#77
20090020246
2009-01-22

Manufacturing method of mechanical pulp from cornstalk cellulose

#78
20080196847
2008-08-21

Pre-extraction and solvent pulping of lignocellulosic material

#79
20080142176
2008-06-19

Process of treating a lignocellulosic material with hemicellulose pre-extraction and hemicellulose adsorption

#80
20070256801
2007-11-08

Alkaline Process and System for Producing Pulp

#81
20070240837
2007-10-18

Hardwood alkaline pulping processes and systems

#82
20070187053
2007-08-16

Method and arrangement of impregnating chips

#83
20070187052
2007-08-16

Method for impregnating chips in a continuous digestion system

#84
20070051481
2007-03-08

Modified kraft fibers

#85
20070000627
2007-01-04

Modified kraft fibers

#86
20060225852
2006-10-12

Process for removing silica from cellulosic material

#87
20060175029
2006-08-10

Batch process for preparing pulp

#88
20060070710
2006-04-06

Method and a device for preparing cellulose pulp

#89
20050103454
2005-05-19

Pretreatment of chips with white liquor prior to a treatment with black liquor

#90
20050061458
2005-03-24

Method and arrangement for impregnating chips

#91
15717604
2018-02-20

Synthesis of nanostructures from agro-wastes

#92
15343163
2018-02-20

Method of producing cellulose nanostructures