Patents-Review.com
ClassID:

126432 ⎘

D21C11/0042 - CPC Classification

Classification description:

Regeneration of pulp liquors or effluent waste waters Fractionating or concentration of spent liquors by special methods

Sub-classes:
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
20250257526
2025-08-14

PROCESS FOR PRODUCTION OF LIGNIN, ORGANIC ACIDS, ORGANIC CHEMICALS, PURE CO2, AND WATER FROM KRAFT BLACK LIQUOR WITH OPERATIONAL EFFICIENCIES

 #3
20250215642
2025-07-03

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

 #4
20250146217
2025-05-08

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

 #5
20240383937
2024-11-21

TREATING BLACK LIQUOR WITH ACIDIC BIOMASS FOR LIGNIN RECOVERY

 #6
20240318382
2024-09-26

Sulfonated Lignin-Derived Compounds And Uses Thereof

 #7
20240307825
2024-09-19

METHOD FOR PROCESSING BARK PRESS WATER FROM SAWMILLS AND/OR PULP MILLS

 #8
20240141588
2024-05-02

METHOD FOR FRACTIONATION OF HIGHLY REFINED CELLULOSE

 #9
20230416986
2023-12-28

METHOD FOR THE GASIFICATION OF A BLACK LIQUOR

 #10
20230304221
2023-09-28

Sulfonated Lignin-Derived Compounds And Uses Thereof

 #11
20230249137
2023-08-10

FILTRATION APPARATUS CONTAINING ALKYLATED GRAPHENE OXIDE MEMBRANE

 #12
20230235507
2023-07-27

Method and a system for producing an oil rich fraction from biomass

 #13
20230220622
2023-07-13

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

 #14
20230160143
2023-05-25

Sulfonated lignin-derived compounds and uses thereof

 #15
20230132267
2023-04-27

High solids alkaline oxidation and biomethane conversion of residual lignin

 #16
20230115487
2023-04-13

DEWATERING VISCOUS LIQUIDS WITH PRESSURIZED CARBON DIOXIDE

 #17
20220204377
2022-06-30

METHOD FOR RECOVERING WATER AND CHEMICALS FROM PLANTS FOR TREATING EFFLUENTS FROM PULP AND PAPER FACTORIES

 #18
20220195668
2022-06-23

System for managing solids in papermaking whitewater

 #19
20220120035
2022-04-21

Method for producing oxidized lignin in kraft pulp mill

 #20
20220049420
2022-02-17

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

 #21
20220018069
2022-01-20

FRACTIONATION OF CRUDE TALL OIL

 #22
20210292858
2021-09-23

Methods for treating lignocellulosic materials

 #23
20210276945
2021-09-09

Sulfonated lignin-derived compounds and uses thereof

 #24
20200369932
2020-11-26

Deicer composition and method of making

 #25
20200368688
2020-11-26

Black liquor concentration by a membrane comprising graphene oxide on porous polymer

 #26
20200215452
2020-07-09

Apparatus and method for separation of components with different volatility in a mixed fluid

 #27
20200141057
2020-05-07

CATALYTIC CONVERSION OF LIGNIN

 #28
20200063341
2020-02-27

Process for the isolation of lignin from black liquor and modification of the lignin for plastic applications

 #29
20190271113
2019-09-05

Method and system for treating biomass

 #30
20190203416
2019-07-04

Process for isolation of hemicelluloses from biomass pulping process waters or spent liquors

 #31
20190119852
2019-04-25

Recover of inorganic chemicals of the pulp and paper making processes using microwaves and related techniques

 #32
20190085006
2019-03-21

Method for producing low molecular weight aromatic lignin-derived compounds

 #33
20180195189
2018-07-12

Continuous electrolysis method with electrolytic bath for polysulfide production and electrolysis device for implementing the same

 #34
20170349958
2017-12-07

Methods for treating lignocellulosic materials

 #35
20170246646
2017-08-31

Method and device for separating two phases

 #36
20170226694
2017-08-10

Detoxifying and recycling of washing solution used in pretreatment of lignocellulose-containing materials

 #37
20170159238
2017-06-08

Method for utilizing lignin separated from black liquor as lime-kiln fuel

 #38
20170030018
2017-02-02

System and process for pulping wood

 #39
20170030017
2017-02-02

Device and method for treating the black liquor resulting from pulping by hydrothermal liquefaction

 #40
20170016180
2017-01-19

Method and arrangement for generating steam at a digester plant of a chemical pulp mill

 #41
20160032525
2016-02-04

Process for the isolation of lignin from black liquor and modification of the lignin for plastic applications

 #42
20150240370
2015-08-27

Continuous electrolysis method with electrolytic bath for polysulfide production and electrolysis device for implementing the same

 #43
20150225896
2015-08-13

CONDITIONING OF SO2-ETHANOL-WATER SPENT LIQUOR FOR FERMENTATION BY CLOSTRIDIA

 #44
20150191873
2015-07-09

Processes for producing high-yield pulp and paper products

 #45
20150141628
2015-05-21

Methods for treating lignocellulosic materials

 #46
20150136121
2015-05-21

Methods for treating lignocellulosic materials

 #47
20140060520
2014-03-06

System and method for conditioning a hardwood pulp liquid hydrolysate

 #48
20140034253
2014-02-06

Process for acetic acid removal from pretreated biomass

 #49
20120202260
2012-08-09

HYBRID BIOREFINING AND GASIFICATION OF LIGNOCELLULOSIC FEEDSTOCKS

 #50
20120017891
2012-01-26

System and method for conditioning a hardwood pulp liquid hydrolysate

 #51
20110272110
2011-11-10

Method and system for high alpha dissolving pulp production

 #52
20110272109
2011-11-10

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

 #53
20090056889
2009-03-05

Detoxifying and recycling of washing solution used in pretreatment of lignocellulose-containing materials

 #54
20070227979
2007-10-04

Black liquor treatment method