ClassID:

127024

D21H23/04 - CPC Classification

Classification description:

Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added Addition to the pulp; After-treatment of added substances in the pulp

Sub-classes:
Recent Application in this class:
#1
20260002323
2026-01-01

Paper Enhancing Compositions, Uses Thereof and Enhanced Paper

#2
20250243150
2025-07-31

METHOD FOR OBTAINING BIO-SOURCED N-VINYLFORMAMIDE

#3
20250223761
2025-07-10

METHOD FOR REPULPING WET STRENGTH FIBER

#4
20250171577
2025-05-29

NOVEL POLYMER AND METHOD FOR THE PREPARATION THEREOF

#5
20250163651
2025-05-22

METHOD FOR PRODUCING A FILTERING MATERIAL

#6
20250137203
2025-05-01

PACKAGE MATERIAL AND METHOD OF PRODUCING A PACKAGE MATERIAL

#7
20250043513
2025-02-06

A method for improving grease and oil resistance of a fiber based article

#8
20250027275
2025-01-23

WIRE TREATMENT FOR DUST CONTROL

#9
20250003152
2025-01-02

CITRIC ACID-CATALYSED CURRAN MODIFIED CARD BOARD MATERIALS

#10
20240376672
2024-11-14

METHOD FOR MANUFACTURING PAPER AND CARDBOARD

#11
20240344274
2024-10-17

DISPERSIBLE PAPER, METHOD FOR PRODUCING SAME, PACKAGING AND USE OF SAID PAPER

#12
20240344271
2024-10-17

USE OF MODIFIED LIGNIN AS A WET END STRENGTH ADDITIVE

#13
20240337070
2024-10-10

ADDITIVE COMPOSITIONS FOR PAPERMAKING

#14
20240270681
2024-08-15

Method for obtaining bio-sourced N-vinylformamide

#15
20240200270
2024-06-20

METHOD FOR MANUFACTURING PAPER AND CARDBOARD

#16
20240175211
2024-05-30

SYSTEMS AND METHODS FOR PRODUCTION OF STARCH-LOADED FIBRILLATED FIBERS

#17
20240167226
2024-05-23

OIL-RESISTANT AGENT COMPOSITION

#18
20240093433
2024-03-21

A TREATMENT SYSTEM FOR MANUFACTURE OF PAPER, BOARD OR THE LIKE

#19
20240093432
2024-03-21

METHOD FOR MANUFACTURING MOLDED PRODUCT

#20
20240084513
2024-03-14

TISSUE PAPER AND METHOD FOR MANUFACTURING TISSUE PAPER

#21
20240068168
2024-02-29

COMPOSITIONS AND METHODS FOR PAPERMAKING

#22
20240066474
2024-02-29

STATIC MIXER FOR ELECTRICAL SUBMERSIBLE PUMP (ESP) HIGH GAS/OIL RATIO (GOR) COMPLETIONS

#23
20240044082
2024-02-08

PROCESS FOR MANUFACTURING PAPER OR CARDBOARD

#24
20240035232
2024-02-01

ADDITIVE COMPOSITIONS AND METHODS FOR PAPERMAKING WITH HIGH-KAPPA FURNISHES

#25
20240018724
2024-01-18

METHOD FOR PRODUCING A CELLULOSE-FIBRE-BASED DRINKING STRAW

#26
20230383470
2023-11-30

Tissue paper and method for manufacturing tissue paper

#27
20230366154
2023-11-16

PAPER ENHANCING COMPOSITIONS, USES THEREOF AND ENHANCED PAPER

#28
20230323603
2023-10-12

FLAME-RESISTANT PAPER FOR RADIO WAVE ABSORBER MEMBER AND PRODUCTION METHOD FOR SAME

#29
20230265615
2023-08-24

Preparation method of heat-not-burn cigarette paper with boron nitride as thermally-conductive filler

#30
20230243103
2023-08-03

NOVEL WATER-SOLUBLE POLYMER COMPLEXES IN THE FORM OF AN INVERSE EMULSION AND USES THEREOF

#31
20230243102
2023-08-03

COMPOSITION FOR IMPROVING SOFTNESS OF TISSUE AND/OR TOWEL PRODUCTS

#32
20230141227
2023-05-11

PROCESS FOR PRODUCING COLOURED CARDBOARD IN A CARDBOARD PRODUCTION APPARATUS, AND COLOURED PRODUCED BY SUCH A PROCESS

#33
20230140638
2023-05-04

COMPOSITIONS AND METHODS FOR INCREASED WET AND DRY STRENGTH

#34
20230122111
2023-04-20

COMPOSITION AND METHOD FOR MANUFACTURE OF PAPER, BOARD OR THE LIKE

#35
20230078847
2023-03-16

NOVEL COMPOSITION AND METHOD FOR PAPERMAKING

#36
20230069108
2023-03-02

ASSEMBLIES OF FIBERS AND INORGANIC PARTICLES

#37
20230053998
2023-02-23

PRODUCT CONTAINING AN ANIONIC CELLULOSE DERIVATIVE AND ITS USE IN PAPER INDUSTRY

#38
20220316141
2022-10-06

Aramid-mica composite insulating nanopaper and preparation method thereof

#39
20220316139
2022-10-06

Sheet manufacturing method and sheet manufacturing apparatus

#40
20220228320
2022-07-21

Treated substrates and methods of producing the same

#41
20220205183
2022-06-30

Suspensions including cellulose nanofibril and polyester

#42
20220154405
2022-05-19

Paper enhancing compositions, uses thereof and enhanced paper

#43
20220127789
2022-04-28

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

#44
20220106739
2022-04-07

METHOD FOR MANUFACTURING INJECTION MOLDING MATERIAL AND INJECTION MOLDING MATERIAL

#45
20220098489
2022-03-31

METHOD OF IMPROVING THE FIRE RESISTANCE OF A CELLULOSE MATERIAL

#46
20220090319
2022-03-24

Process for producing paper or board and a product thereof

#47
20220081842
2022-03-17

OIL-RESISTANT AGENT FOR PAPER

#48
20220049428
2022-02-17

MOISTURE/OIL-RESISTANT FIBER/STARCH COMPOSITE MATERIALS

#49
20220033555
2022-02-03

Method for producing paper or cardboard

#50
20210381169
2021-12-09

PAPER ENHANCING COMPOSITIONS, USES THEREOF AND ENHANCED PAPER

#51
20210310193
2021-10-07

Process for Producing Paper or Paperboard, in Particular Label Paper or Paperboard Suited for Use as Packaging Material for Beverage Containers, and Paper or Paperboard Produced by This Process

#52
20210301473
2021-09-30

Use of a polymer product for deposit formation control in manufacture of paper or board

#53
20210277604
2021-09-09

PAPERMAKING SYSTEM AND METHOD

#54
20210230802
2021-07-29

EQUIPMENT FOR MANUFACTURING FIBER STRUCTURE, METHOD FOR MANUFACTURING FIBER STRUCTURE, AND FIBER STRUCTURE

#55
20210214895
2021-07-15

Method for producing paper

#56
20210189659
2021-06-24

Paper strength improving composition, manufacture thereof and use in paper making

#57
20210189656
2021-06-24

Ash retention additive and methods of using the same

#58
20210180254
2021-06-17

Titanium oxide composite fibers and method for producing same

#59
20210156086
2021-05-27

Methods for the separation of baobab fibers

#60
20210148052
2021-05-20

Method of producing hydrophobic paper

#61
20210140113
2021-05-13

Papermaking system and method

#62
20210140111
2021-05-13

Complex of polymers, preparation and use

#63
20210123187
2021-04-29

COATING COMPOSITION FOR PACKAGING LINER

#64
20210102343
2021-04-08

Dry strength composition, its use and method for making of paper, board or the like

#65
20210095424
2021-04-01

Method to produce a fibrous product comprising microfibrillated cellulose

#66
20210087751
2021-03-25

LOW LINT TISSUE AND TOWEL PRODUCTS AND PROCESS FOR MAKING THE SAME

#67
20210062429
2021-03-04

Aramid nanofiber-based insulation paper and preparation method thereof

#68
20210017713
2021-01-21

Nano TiO2-doped anti-ultraviolet para-aramid nano paper and preparation method thereof

#69
20210010204
2021-01-14

Aramid fiber far-infrared emitting paper and preparation method thereof

#70
20200385930
2020-12-10

Fiber body forming method and sheet

#71
20200362516
2020-11-19

Paper comprising aramid pulp suitable for electrochemical cells, and electrochemical cells made therefrom

#72
20200318289
2020-10-08

Inline dilution of microfibrillated cellulose

#73
20200240084
2020-07-30

Method for manufacturing paper or cardboard

#74
20200206984
2020-07-02

Methods, apparatus, and chemical compositions for selectively coating fiber-based food containers

#75
20200173112
2020-06-04

Methods of making paper and paper with modified cellulose pulps

#76
20200149223
2020-05-14

Softener composition

#77
20200087859
2020-03-19

Strength additive system and method for manufacturing a web comprising cellulosic fibres

#78
20200079950
2020-03-12

Glyoxylated polyacrylamide polymer composition, its use and method for increasing the strength properties of paper, board or the like

#79
20200063349
2020-02-27

Elongated tubular articles from wet-laid webs

#80
20200063340
2020-02-27

Method for dewatering of sludge from a pulp, paper or board making process

#81
20200062929
2020-02-27

Cellulose/polysaccharide composites

#82
20200040531
2020-02-06

Sheet material comprising fiber and nano-microscale organic fibrillated filler and method of producing said sheet material

#83
20200002893
2020-01-02

Pre-mix useful in the manufacture of a fiber based product

#84
20190382959
2019-12-19

Method of preparing a sizing boost additive

#85
20190382957
2019-12-19

Copolymer, aqueous solution comprising the copolymer and method for reducing negative effects of natural pitch and adhesive contaminants in both pulping and papermaking operations

#86
20190301100
2019-10-03

Method for increasing dimensional stability of a paper or a board product

#87
20190264394
2019-08-29

Method to form a web comprising fibers

#88
20190211895
2019-07-11

Friction material comprising aramid

#89
20190153675
2019-05-23

Method of measuring hydrophobic contaminants in a pulp slurry or a papermaking system

#90
20190127918
2019-05-02

Paper comprising aramid pulp and a friction paper made therefrom

#91
20190062999
2019-02-28

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

#92
20190048530
2019-02-14

Process for manufacturing paper and board

#93
20190024320
2019-01-24

Method for forming a composite comprising MFC and a composite produced by the method

#94
20190024319
2019-01-24

Use of an acrylate copolymer as retention aid in a method of making a substrate comprising cellulosic fibres

#95
20190016880
2019-01-17

An Amphoteric Polymer and an Alkenyl Succinic Anhydride Emulsion Containing the Same

#96
20190003123
2019-01-03

Cationic polyetheramine dispersants for preparing papermaking stock

#97
20180313038
2018-11-01

Process for reducing lint from tissue and towel products

#98
20180119360
2018-05-03

Bio-based environment-friendly flame retardant wallpaper and preparation method thereof

#99
20180105987
2018-04-19

Softener composition

#100
20180073197
2018-03-15

Methods of making paper and paper with modified cellulose pulps

#101
20180023254
2018-01-25

High efficiency wet strength resins from new cross-linkers

#102
20180014986
2018-01-18

Absorbent article and method of manufacturing the same

#103
20170284028
2017-10-05

Sizing composition, its use and a method for producing paper, board or the like

#104
20170268176
2017-09-21

Strength agent, its use and method for increasing strength properties of paper

#105
20170247489
2017-08-31

Glyoxalated Polyacrylamide Terpolymer, Base Copolymer Thereof, Compositions Containing Same, Uses In Papermaking And Products Thereof

#106
20170204566
2017-07-20

Methods of making paper and paper with modified cellulose pulps

#107
20170183822
2017-06-29

Method of increasing the filler content in paper or paperboard

#108
20170101740
2017-04-13

Method of increasing drainage performance of a pulp slurry during manufacture of paper products, and products therefrom

#109
20170089014
2017-03-30

Acoustical ceiling tile

#110
20170002518
2017-01-05

Papermaking agent composition and method for treating fibre stock

#111
20160369457
2016-12-22

Paper Products and Methods for Manufacture Thereof

#112
20160367956
2016-12-22

Method for feeding chemical into a liquid flow

#113
20160348320
2016-12-01

VOLATILE DEBONDER FORMULATIONS FOR PAPERMAKING

#114
20160289896
2016-10-06

Method for treating a fibre stock for making of paper, board or the like and product

#115
20160201269
2016-07-14

High molecular weight and high cationic charge glyoxalated polyacrylamide copolymers and their methods of manufacture and use

#116
20160201265
2016-07-14

Method for preparing furnish and paper product

#117
20160176989
2016-06-23

Method of modifying nanofibrillar cellulose composition

#118
20160153146
2016-06-02

Paper and methods of making paper

#119
20160083908
2016-03-24

Paper composition and process for making the same

#120
20160060813
2016-03-03

Method of providing fiber web making furnish with filler, and paper or paper board

#121
20160059530
2016-03-03

Method for producing a core card, and core card for a laminate

#122
20150354140
2015-12-10

Method of preparing a treated article and treated article formed therefrom

#123
20150345081
2015-12-03

Process for the manufacture of paper and paperboard

#124
20150315750
2015-11-05

Methods of making paper and paper with modified cellulose pulps

#125
20150259859
2015-09-17

High efficiency wet strength resins from new cross-linkers

#126
20150259858
2015-09-17

High efficiency wet strength resins from new cross-linkers

#127
20150224806
2015-08-13

Magnetically bound medium with reattachable pages

#128
20150191875
2015-07-09

Production of paper, card and board

#129
20150144282
2015-05-28

Method for increasing paper strength

#130
20150118431
2015-04-30

Process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix

#131
20150111997
2015-04-23

Process for manufacturing a composition comprising cellulose pulp fibers and thermoplastic fibers

#132
20150007956
2015-01-08

Silica-based sols

#133
20140322543
2014-10-30

Fluorochemical composition and use thereof

#134
20140305607
2014-10-16

AKD composition and manufacture of paper and paperboard

#135
20140299286
2014-10-09

Paper substrates containing high surface sizing and low internal sizing and having high dimensional stability

#136
20140290883
2014-10-02

Method of preparing a treated article and treated article formed therefrom

#137
20140231036
2014-08-21

Fibre product for packaging

#138
20140224443
2014-08-14

ADDITIVES FOR PAPERMAKING

#139
20140220323
2014-08-07

Paper sizing composition with salt of calcium (II) and organic acid, products made thereby, method of using, and method of making

#140
20140178660
2014-06-26

Soft tissue having reduced hydrogen bonding

#141
20140124154
2014-05-08

Process for the production of paper and board

#142
20140069600
2014-03-13

Method for the emulsification of ASA with polyamidoamine epihalohydrin (PAE)

#143
20140053996
2014-02-27

Production of paper, card and board

#144
20140020858
2014-01-23

High efficiency wet strength resins from new cross-linkers

#145
20130248132
2013-09-26

Volatile debonder formulations for papermaking

#146
20130180678
2013-07-18

Method of preparing a treated article and treated article formed therefrom

#147
20130081771
2013-04-04

Paper and methods of making paper

#148
20130068407
2013-03-21

Volatile debonder formulations for papermaking

#149
20130062029
2013-03-14

METHOD OF MAKING PAPER

#150
20130000858
2013-01-03

Method and a reactor for mixing one or more chemicals into a process liquid flow

#151
20120318471
2012-12-20

PROCESS FOR THE PREPARATION OF A PIGMENT-FIBRE COMPOSITE

#152
20120121872
2012-05-17

Paper sizing composition with salt of calcium (II) and organic acid, products made thereby, method of using, and method of making

#153
20120012265
2012-01-19

Paper substrates containing high surface sizing and low internal sizing and having high dimensional stability

#154
20120005845
2012-01-12

Aqueous direct dye formulations

#155
20110308753
2011-12-22

Latex-treated filler slurries for use in papermaking

#156
20110308751
2011-12-22

Cellulose articles containing an additive composition

#157
20110277949
2011-11-17

Compositions containing expandable microspheres and an ionic compound, as well as methods of making and using the same

#158
20110214828
2011-09-08

PROCESS FOR MAKING A SECURITY DOCUMENT

#159
20110213053
2011-09-01

NEW-TYPE PAPERMAKING WET-END DEFOAMER

#160
20110079365
2011-04-07

Production of paper

#161
20100307706
2010-12-09

REDUCED SHEAR CELLULOSE REACTIVE SIZING AGENT FOR WET END APPLICATIONS

#162
20100276095
2010-11-04

Paper substrates containing high surface sizing and low internal sizing and having high dimensional stability

#163
20100189931
2010-07-29

Ink-jet-printable decorative paper

#164
20100181038
2010-07-22

Preparation of aqueous slurries of finely divided fillers and their use for the production of papers having a high filler content and high dry strength

#165
20100170419
2010-07-08

Silica-based sols

#166
20100147475
2010-06-17

Method for producing paper with a high substance weight

#167
20100126383
2010-05-27

Starch Derivatives for Use in Paper Sizing and/or Coating Compositions

#168
20100043991
2010-02-25

Papers having borate-based complexing and method of making same

#169
20100038046
2010-02-18

Use of an aqueous suspension and/or dispersion of mineral materials containing a hydrophobic group water-soluble copolymer for making a paper sheet

#170
20100032115
2010-02-11

Compositions containing expandable microspheres and an ionic compound as well as methods of making and using the same

#171
20100032114
2010-02-11

Compositions containing expandable microspheres and an ionic compound as well as methods of making and using the same

#172
20090250182
2009-10-08

Papermaking Method and Papermaking System

#173
20090211721
2009-08-27

Method and arrangement for feeding chemicals into a process stream

#174
20090139676
2009-06-04

ASA emulsification with ultrasound

#175
20090114356
2009-05-07

Method of Producing a Fibrous Web

#176
20090107645
2009-04-30

Process for the Production of a Paper and a Paper Produced According to the Process

#177
20090044922
2009-02-19

Cationic crosslinked waxy starch products, a method for producing the starch products, and use in paper products

#178
20090014139
2009-01-15

Softening agent for paper and method for making paper by using same

#179
20080308242
2008-12-18

High solids glyoxalated polyacrylamide

#180
20080302496
2008-12-11

Latex-treated filler slurries for use in papermaking

#181
20080295985
2008-12-04

Cellulose articles containing an additive composition

#182
20080289787
2008-11-27

Paper and materials and processes for its production

#183
20080190578
2008-08-14

Alkanolamine-stabilized dispersed rosin sizing agents and their preparation

#184
20080190577
2008-08-14

Alkanolamine-stabilized dispersed rosin sizing agents and their preparation

#185
20080035292
2008-02-14

Paper substrates containing high surface sizing and low internal sizing and having high dimensional stability

#186
20080023164
2008-01-31

Process for Producing a Paper or Board and a Paper or Board Produced According to the Process

#187
20080011788
2008-01-17

Method and arrangement for feeding chemicals into a papermaking process

#188
20080010853
2008-01-17

Process for Producing Dried Singulated Fibers Using Steam and Heated Air

#189
20070277949
2007-12-06

Sizing of paper

#190
20070261807
2007-11-15

Use of polyvinylamine to improve oil and water sizing in cellulosic products

#191
20070258315
2007-11-08

Method and apparatus for feeding chemical into a liquid flow

#192
20070240839
2007-10-18

Starch derivatives for use in paper sizing and/or coating compositions

#193
20070169908
2007-07-26

Method and arrangement for feeding chemicals into a process stream

#194
20070169903
2007-07-26

Papermaking processes using coagulants and optical brighteners

#195
20070151681
2007-07-05

METHOD AND DEVICE FOR LOADING A FIBROUS STOCK SUSPENSION

#196
20070137523
2007-06-21

Sizing of paper

#197
20070119560
2007-05-31

Method for producing paper, paperboard and cardboard

#198
20070074641
2007-04-05

Mixtures of solids, consisting of a reactive sizing agent and starch, method for producing said mixtures and use thereof

#199
20070062662
2007-03-22

Use of synthetic metal silicates for decreasing the deposition of contaminants during a papermaking process

#200
20070048357
2007-03-01

Fibrous wiping products

#201
20070044929
2007-03-01

Compositions containing expandable microspheres and an ionic compound, as well as methods of making and using the same

#202
20070025904
2007-02-01

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

#203
20070012413
2007-01-18

Wallpaper and method for production thereof

#204
20060169431
2006-08-03

Enhanced efficacy of fungicides in paper and paperboard

#205
20060162883
2006-07-27

Use of polymers containing vinylamine units as promoters for alkyldiketene glueing

#206
20060144542
2006-07-06

Composition

#207
20060096724
2006-05-11

Aqueous compositions and their use in the manufacture of paper and paperboard

#208
20060065380
2006-03-30

Bicomponent strengthening system for paper

#209
20060030707
2006-02-09

Triazinylaminostilbene disulphonic acid mixtures

#210
20050211402
2005-09-29

Acoustic paper diaphragm and acoustic transducer apparatus

#211
20050192402
2005-09-01

Epichlorohydrin-based polymers containing primary amino groups used as additives in papermaking

#212
20050150624
2005-07-14

Molded fiber manufacturing

#213
20050124704
2005-06-09

Paper and materials and processes for its production

#214
20050086828
2005-04-28

Process for producing dried, singulated fibers using steam and heated air

#215
20050077022
2005-04-14

Compositions for reducing paper linting and dusting

#216
20050061461
2005-03-24

Production of paper board and cardboard

#217
20050056391
2005-03-17

Papers having borate-based complexing and method of making same

#218
20050022415
2005-02-03

System for making dried singulated crosslinked cellulose pulp fibers