ClassID:

127047

D21H23/50 - 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 formed paper Spraying or projecting

Recent Application in this class:
#1
20250354336
2025-11-20

Internal Spraying of Paper Product Cores

#2
20250187364
2025-06-12

Metalized Powder Painted Color Sample

#3
20250146224
2025-05-08

METHODS AND COMPOSITIONS FOR PAPERMAKING

#4
20250084592
2025-03-13

Assymetric Paperboard

#5
20250019899
2025-01-16

BIODEGRADABLE ARTICLE

#6
20240426058
2024-12-26

METHOD FOR PRODUCING DECORATIVE PAPER

#7
20240247442
2024-07-25

PROCESSING CONVENTIONAL PAPERS AND PULPS INTO HYDROPHOBIC AND WATER-RESISTANT PACKAGING MATERIALS AND TABLEWARE

#8
20240225376
2024-07-11

Spray N Wipe

#9
20240167229
2024-05-23

A METHOD FOR PROVIDING A NON-UNIFORM BARRIER COATING ON A HOLLOW CONTAINER COMPRISING MOLDED PULP

#10
20240167228
2024-05-23

A METHOD FOR COATING A HOLLOW CONTAINER COMPRISING MOLDED PULP

#11
20240130577
2024-04-25

Spray N Wipe

#12
20230416992
2023-12-28

BARRIER FILM FOR PACKAGING MATERIAL

#13
20230411632
2023-12-21

METHOD FOR PRODUCING A GREEN PAPER FOR PRODUCING A GAS DIFFUSION LAYER FOR A FUEL CELL

#14
20230407569
2023-12-21

ENHANCED CELLULOSE NANOFIBRILS (CNF)

#15
20230366156
2023-11-16

METHOD FOR MANUFACTURING TISSUE PAPER AND METHOD FOR MANUFACTURING TISSUE PAPER PRODUCT

#16
20230366152
2023-11-16

METHOD

#17
20230366151
2023-11-16

NITROCELLULOSE PAPERS AND METHODS OF PRODUCTION AND USE

#18
20230357991
2023-11-09

Biopolymer composition and its use as a powder coating

#19
20230313467
2023-10-05

STRENGTH IMPROVEMENT VIA SPRAYBOOM APPLICATION

#20
20230212825
2023-07-06

A PACKAGING MATERIAL FOR PACKAGING OF LIQUID AND FOOD

#21
20230151545
2023-05-18

Multilayer film comprising highly refined cellulose fibers

#22
20230123531
2023-04-20

Paper-based flexible packaging material with high barrier properties and a process to produce it

#23
20230095967
2023-03-30

Paper precoat process

#24
20220412012
2022-12-29

Fiber body manufacturing method

#25
20220251786
2022-08-11

Fiber body forming method and fiber body forming apparatus

#26
20220251784
2022-08-11

PRODUCTION OF SHEETS COMPRISING FIBRILLATED CELLULOSE

#27
20220243401
2022-08-04

Method for applying starch to a paper or paperboard web

#28
20220195672
2022-06-23

Paper strength improvement using metal chelates and synthetic cationic polymers

#29
20220195670
2022-06-23

Method for depositing a cellulosic fiber composition on a substrate

#30
20220074144
2022-03-10

Paperboard and a method of producing a paperboard

#31
20220010493
2022-01-13

METHOD FOR HYDROPHOBIZING A CELLULOSE SUBSTRATE BY UTILIZING A FATTY ACID HALIDE

#32
20220002949
2022-01-06

METHOD FOR HYDROPHOBIZING A CELLULOSE SUBSTRATE BY UTILIZING A FATTY ACID HALIDE

#33
20210222371
2021-07-22

Method for producing multi-layer paper

#34
20210189658
2021-06-24

Method for producing single-layer or multi-layer paper

#35
20210189654
2021-06-24

Fibrous product

#36
20210108372
2021-04-15

Fibrous body manufacturing apparatus and fibrous body manufacturing method

#37
20210054570
2021-02-25

Process for production of film comprising microfibrillated cellulose

#38
20210002830
2021-01-07

Method for manufacturing a multi-layered paperboard, multi-layered paperboard and composition for use in multi-layered paperboard manufacturing

#39
20200385930
2020-12-10

Fiber body forming method and sheet

#40
20200318292
2020-10-08

Method of manufacturing of a foam-formed cellulosic fibre-material, a bulk sheet and a laminated packaging material comprising the cellulosic fibre-material

#41
20200318290
2020-10-08

Deodorant-paper manufacturing method

#42
20200208352
2020-07-02

Method and Device for Applying a Material to a Moving Web

#43
20200207517
2020-07-02

Polymer coated paperboard container and method

#44
20200190744
2020-06-18

METHOD WITH A HORIZONTAL JET APPLICATOR FOR A PAPER MACHINE WET END

#45
20200165781
2020-05-28

FIBER BODY FORMING METHOD AND FIBER BODY FORMING APPARATUS

#46
20200165780
2020-05-28

Fiber body forming method and fiber body forming apparatus

#47
20200109517
2020-04-09

Oil and grease resistant paperboard

#48
20200056333
2020-02-20

Process for providing coating layer comprising micro fibrillated cellulose

#49
20200032457
2020-01-30

Inner liner for a cigarette

#50
20200010703
2020-01-09

Method for preparing large-area structural chromogenic pattern by ink-jet printing and anti-counterfeiting method based on structural color change

#51
20190316297
2019-10-17

Process for the in-situ adjustmen of ion concentrations during the manufacturing of web materials

#52
20190315084
2019-10-17

Process for manufacturing an improved web material by the in-situ measurement and adjustment of ion concentration

#53
20190309481
2019-10-10

Method with a horizontal jet applicator for a paper machine wet end

#54
20190226149
2019-07-25

Dispersible wet wipes constructed with patterned binder

#55
20190194876
2019-06-27

Fibrous structures with shaped polymer particles

#56
20190194870
2019-06-27

Method for fabricating shaped paper products

#57
20190161914
2019-05-30

Oil and grease resistant paperboard

#58
20180202106
2018-07-19

Printable compostable paperboard

#59
20180179708
2018-06-28

Method for hydrophobing a cellulose substrate

#60
20180161794
2018-06-14

Device for spraying a coating chemical onto a moving surface of a papermaking machine

#61
20180126402
2018-05-10

SPRAYING APPARATUS AND CHEMICAL SOLUTION

#62
20170342661
2017-11-30

Process for the production of a coated substance comprising cellulosic fibres

#63
20170328005
2017-11-16

Printable compostable paperboard

#64
20170089011
2017-03-30

Compositions and methods of making paper products

#65
20170022669
2017-01-26

Method for producing a mat of cellulose fibres with a controlled level of mineral material for bitumen-impregnated roofing elements, and suitable device

#66
20170002517
2017-01-05

Printable compostable paperboard

#67
20160340833
2016-11-24

Compostable paperboard with oil, grease, and moisture resistance

#68
20160334021
2016-11-17

AIR SEAL DEVICE FOR A SPRAY APPARATUS IN A PAPERMAKING MACHINE

#69
20160296960
2016-10-13

Nozzle assembly with self-cleaning face

#70
20160230343
2016-08-11

Oil, grease, and moisture resistant paperboard

#71
20160207039
2016-07-21

Method for making hydrophobic barriers requiring UV-light treatment

#72
20160207038
2016-07-21

Method for making hydrophobic barriers in paper

#73
20160168797
2016-06-16

Reusable water writing paper, preparation method thereof, and inkless printing device used for same

#74
20150305814
2015-10-29

Online treated sealable and peelable medical paper for medical sterilization packaging

#75
20140294906
2014-10-02

Method for conferring antimicrobial activity to a substrate

#76
20140137518
2014-05-22

Polymer coated paperboard container and method

#77
20140044958
2014-02-13

Method and system for applying particulate solids on a substrate

#78
20140034254
2014-02-06

High bulk tissue comprising expandable microspheres

#79
20130180537
2013-07-18

Method and apparatus for making slit-banded wrapper using moving orifices

#80
20130171462
2013-07-04

Surface Treatment of Substrate or Paper/Paperboard Products Using Optical Brightening Agent

#81
20130160959
2013-06-27

Compositions and methods of making paper products

#82
20130156970
2013-06-20

Apparatus for producing a spray of changed droplets of aqueous liquid

#83
20130059088
2013-03-07

PRIMING AND COATING PROCESS

#84
20130011553
2013-01-10

PROCESSES FOR PREPARING COATED PRINTING PAPER

#85
20120328689
2012-12-27

DEODORIZING PAPER AND METHOD

#86
20120285646
2012-11-15

Process for the manufacture of paper products

#87
20120138249
2012-06-07

Method for improving paper and board's resistance to the penetration of liquids

#88
20120111516
2012-05-10

Method and apparatus for treating a fibrous web

#89
20120107497
2012-05-03

Method and system for applying particulate solids on a substrate

#90
20120101195
2012-04-26

Method for the chemical treatment of starch for applying in sheets of paper

#91
20120003490
2012-01-05

Surface treatment of substrate or paper/paperboard products using optical brightening agent

#92
20110248095
2011-10-13

VARIABLE ORIFICE BLACK LIQUOR NOZZLE METHOD AND APPARATUS

#93
20110223401
2011-09-15

FIBROUS PRODUCT HAVING A BARRIER LAYER AND METHOD OF PRODUCING THE SAME

#94
20110186244
2011-08-04

COMPOSITE BLIND SLAT AND METHOD OF MAKING THE SAME

#95
20110088862
2011-04-21

Printable product and a method for manufacturing a printable product

#96
20110081483
2011-04-07

Method of Spray Coating

#97
20110011546
2011-01-20

METHOD FOR CONTROLLING DEPOSIT FORMATION

#98
20110000847
2011-01-06

Method for producing particles electrostatically

#99
20100330279
2010-12-30

AQUEOUS DISPERSION, A COATED SUBJECT AND USE OF AN AQUEOUS DISPERSION

#100
20100236737
2010-09-23

Process for the production of a cellulosic product

#101
20100221449
2010-09-02

Method and apparatus for applying plastic coatings

#102
20100209725
2010-08-19

METHOD OF MODIFYING PAPER AND CARDBOARD

#103
20100143736
2010-06-10

Surface treatment of substrate or paper/paperboard products using optical brightening agent

#104
20100119714
2010-05-13

METHOD AND DEVICE FOR PRODUCING AN AT LEAST ESSENTIALLY WOOD-FREE COATED PAPER WEB

#105
20100078141
2010-04-01

Surface treating tissue webs via patterned spraying

#106
20100015460
2010-01-21

Method for controlling surface contact area of a paper or board substrate

#107
20090277466
2009-11-12

Method and apparatus for making slit-banded wrapper using moving orifices

#108
20090226617
2009-09-10

PAPERBOARD FOR USE IN WATER RESISTANT PACKAGING

#109
20090188638
2009-07-30

PROCESS FOR MANUFACTURING A MATERIAL IN SHEET FORM, COMPRISING AT LEAST ONE FIBROUS LAYER AND SECURITY AND/OR DECORATIVE ELEMENTS

#110
20090151882
2009-06-18

Disposable dishwashing towel with soap and scouring power

#111
20080314538
2008-12-25

Paper Machine With One or a Plurality of Valve Devices

#112
20080277080
2008-11-13

Method for the Genetic Modulation of the Biosynthesis of Hemicelluloses, Cellulose and Uronic Acids in Plant Cells Using Gene Expression Cassettes

#113
20080271864
2008-11-06

Soft tissue paper having a chemical softening agent applied onto a surface thereof

#114
20080257512
2008-10-23

Single ply tissue products surface treated with a softening agent

#115
20080180502
2008-07-31

Newsprint media for inkjet printing

#116
20080135196
2008-06-12

Protecting device for spraying equipment and method of protecting it and its surroundings

#117
20080128103
2008-06-05

Method And Apparatus For Treating A Fibre Web

#118
20080128101
2008-06-05

Method of applying a super-absorbent composition to tissue or towel substrates

#119
20080083369
2008-04-10

PROCESS AND APPARATUS FOR MANUFACTURING FIBER AND FIBER SHEET CARRYING SOLID PARTICLES AND FIBER AND FIBER SHEET CARRYING SOLID PARTICLES

#120
20070277950
2007-12-06

Surface treatment of substrate or paper/paperboard products using optical brightening agent

#121
20070275165
2007-11-29

Method and device for providing a substrate with a coating layer of a polymeric material

#122
20070184205
2007-08-09

PAPERBOARD FOR USE IN WATER RESISTANT PACKAGING

#123
20070178789
2007-08-02

Fiber mat and process making same

#124
20070151663
2007-07-05

Method and system for applying particulate solids on a substrate

#125
20070148362
2007-06-28

Spay coating unit and method of spray coating

#126
20070137809
2007-06-21

Tissue products containing a polymer dispersion

#127
20070093076
2007-04-26

Electromagnetic treatment in atmospheric-plasma coating process

#128
20070065596
2007-03-22

Plasma thin-film deposition method

#129
20070048357
2007-03-01

Fibrous wiping products

#130
20070029060
2007-02-08

Method and apparatus for applying a material to a wide high-speed web

#131
20060283565
2006-12-21

Making foam coated mats on-line

#132
20060275575
2006-12-07

Decorative paper with sprinkled corundum, coated with an adhesive

#133
20060266485
2006-11-30

Paper or paperboard having nanofiber layer and process for manufacturing same

#134
20060251819
2006-11-09

Copolymer latex for non-contact coating, composition containing the same, coated paper and process for producing the same

#135
20060249266
2006-11-09

Machine for making/treating a sheet of material

#136
20060240648
2006-10-26

Atmospheric glow discharge with concurrent coating deposition

#137
20060193994
2006-08-31

Priming and coating process

#138
20060147641
2006-07-06

Nozzle

#139
20060144539
2006-07-06

Paper products having a tropical composition applied in discrete droplets

#140
20060144535
2006-07-06

Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board

#141
20060121207
2006-06-08

Process for making a fibrous structure comprising an additive

#142
20060086827
2006-04-27

Liquid spray unit, method for spraying liquid using it, and chemical

#143
20060057302
2006-03-16

Process for coating a web with a coating powder

#144
20060016570
2006-01-26

Soft paper product including beneficial agents

#145
20050257906
2005-11-24

Method and apparatus for treating a web of paper or board

#146
20050247421
2005-11-10

Paper products and method of making

#147
20050241790
2005-11-03

Paper products and method of making

#148
20050238700
2005-10-27

Paper tissue with high lotion transferability

#149
20050230071
2005-10-20

Method for incorporating feature substances into a paper web

#150
20050167132
2005-08-04

Electrostatic coating device with insulated grounding electrode

#151
20050145353
2005-07-07

Rolled paper product having high bulk and softness

#152
20050139157
2005-06-30

Nozzle array

#153
20050133184
2005-06-23

Paper products and method of making

#154
20050133179
2005-06-23

Paper products and method of making

#155
20050133178
2005-06-23

Paper products and method of making

#156
20050133177
2005-06-23

Method for adding chemicals to a nonwoven material

#157
20050123777
2005-06-09

Method for forming a film, by using electrostatic forces

#158
20050123731
2005-06-09

Process and apparatus for manufacturing fiber and fiber sheet carrying solid particles and fiber and fiber sheet carrying solid particles

#159
20050123678
2005-06-09

Method for coating a surface of a continuous web with a coating powder

#160
20050118348
2005-06-02

Method for simultaneously powder coating both surfaces of a continuous web

#161
20050118347
2005-06-02

Method for electrostatic coating of a paper web

#162
20050098291
2005-05-12

Apparatus for paper making and paper surface enhancement

#163
20050098285
2005-05-12

Machine for making/treating a sheet of material

#164
20050053771
2005-03-10

Indoor decorative paper and decoration method thereof

#165
15060427
2019-10-01

Toilet tissue spray dispenser and method