ClassID:

127065

D21H25/02 - CPC Classification

Classification description:

After-treatment of paper not provided for in groups  -  Chemical or biochemical treatment

Recent Application in this class:
#1
20260029350
2026-01-29

METHOD FOR PREPARING ULTRAVIOLET (UV)-DEGRADABLE AND FUNCTIONALIZED CELLULOSE PAPER-BASED COLORIMETRIC SENSOR, AND APPLICATION THEREOF

#2
20260022520
2026-01-22

METHOD FOR ACYLATING A HYDROXYLATED SOLID MATERIAL

#3
20250283277
2025-09-11

Coating layer for paper and board using dissolved cellulose

#4
20250129548
2025-04-24

Antiviral and antibacterial composition and tissue product, and related manufacturing method

#5
20250052007
2025-02-13

ACID-FREE SOLUTION PROCESS FOR STRUCTURALLY INTACT CARBON FIBER PAPER WITH LONG-LASTING HYDROPHILICITY

#6
20240158991
2024-05-16

AKD EMULSION AND METHOD OF MAKING

#7
20240158988
2024-05-16

RECYCLABLE AND REUSABLE POLLEN PAPER

#8
20230395815
2023-12-07

Gas diffusion layer for proton exchange membrane fuel cell and preparation method thereof

#9
20230167608
2023-06-01

WATER DISPERSIBLE SHEET AND METHOD TO MANUFACTURE WATER DISPERSIBLE SHEET

#10
20230063903
2023-03-02

Method of surface chemical functionalization for developing of functional hydrophobic surfaces

#11
20230052976
2023-02-16

Method for fermenting biomass and producing material sheets and suspensions thereof

#12
20220400738
2022-12-22

Vaping Article Comprising a Functionalized Cooling Zone

#13
20220333311
2022-10-20

Decay-resistant paper

#14
20220251784
2022-08-11

PRODUCTION OF SHEETS COMPRISING FIBRILLATED CELLULOSE

#15
20220154406
2022-05-19

Method for preparing green slow-release preservative paper used for fruit and vegetable preservation

#16
20220056643
2022-02-24

Antimicrobial biodegradable compositions for food contact articles

#17
20220034028
2022-02-03

Engineered corn husk compositions and methods

#18
20210321831
2021-10-21

MULTI-PLY RESILIENT TISSUE PRODUCTS

#19
20210108362
2021-04-15

Composition for use in the finishing, preservation, restoration of manufactures

#20
20210002828
2021-01-07

Heat-sealable barrier paper

#21
20200362507
2020-11-19

Superficially treated flexible materials suitable for filtering and separating immiscible liquids

#22
20200318291
2020-10-08

SYSTEM AND METHODS FOR PRODUCING CONFETTI TO DISSOLVE IN SALT WATER

#23
20200187725
2020-06-18

Multi-ply resilient tissue products

#24
20200157742
2020-05-21

Device for deacidifying, reinforcing and strengthening ancient books

#25
20200096869
2020-03-26

Ultra-High Resolution Conductive Traces Flexible Biocomposites by Resist Stenciling

#26
20200000295
2020-01-02

Multi-ply resilient tissue products

#27
20190390410
2019-12-26

Method and device for protecting paper sheet

#28
20180291560
2018-10-11

Method for preparing titanium dioxide-based synthetic paper

#29
20180230279
2018-08-16

Sheet, method for producing sheet, and laminate

#30
20180044856
2018-02-15

Manufacture of hydrated nanocellulose sheets for use as a dermatological treatment

#31
20170305178
2017-10-26

Thermal sublimation paper, method for the production thereof and use thereof

#32
20170241080
2017-08-24

Method for the Continuous Coating of a Cellulose-Based Fibrous Substrate Web with Fatty Acid Chloride

#33
20170175337
2017-06-22

Water-free surface sizing composition and method for treating a paper substrate with same

#34
20170073296
2017-03-16

Zinc or copper (II) salt and use thereof as a biocide

#35
20170022223
2017-01-26

Method for producing surface-modified base material, method for producing joined body, new hydrosilane compound, surface treatment agent, surface treatment agent kit, and surface-modified base material

#36
20160258113
2016-09-08

Lignin-based waterproof coating

#37
20160168797
2016-06-16

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

#38
20160069026
2016-03-10

Method and apparatus for impregnating semi-finished fibrous products

#39
20160049627
2016-02-18

Diaphragm paper, and preparation method and application thereof

#40
20150371730
2015-12-24

Electrical insulating paper and stationary induction electrical apparatus using the same

#41
20150305151
2015-10-22

SYNTHETIC PAPER

#42
20150167246
2015-06-18

Isolated aqueous enzymatic preparation and the use thereof for the functionalization of the surface of paper or cellulosic substrates

#43
20150125658
2015-05-07

Release paper and method of manufacture

#44
20150086803
2015-03-26

Modified phenolic resins for making composite products

#45
20150068671
2015-03-12

Method for producing a decorated sheet and use thereof

#46
20150010712
2015-01-08

Water-Free Surface Sizing Composition and Method for Treating a Paper Substrate with Same

#47
20140198166
2014-07-17

Low grammage recording medium

#48
20140096487
2014-04-10

Fixation of mineral oil in paper food packaging with laccase to prevent mineral oil migration into food

#49
20130276245
2013-10-24

COMPOSITION FOR SURFACE COLOURATION OF PAPER

#50
20130236647
2013-09-12

Machine and treatment process via chromatogenous grafting of a hydroxylated substrate

#51
20130213266
2013-08-22

Aqueous glyoxyl-based insolubilizer composition for the surface treatment of paper and cardboard

#52
20130158250
2013-06-20

METHOD OF DEACIDIFYING CELLULOSE BASED MATERIALS

#53
20110290180
2011-12-01

Apparatus for impregnating web-like materials with thermally curable impregnating resin

#54
20110251307
2011-10-13

Use of a styrene latex 100 nm in size as a rheological agent in a paper coating, the paper coating, and the method for obtaining it

#55
20110059441
2011-03-10

METHOF OF PRODUCING BIOACTIVE PAPER

#56
20100285324
2010-11-11

Composition for surface colouration of paper

#57
20100227164
2010-09-09

Fibre-Reinforced Film, Process for Producing the Same, and Use for Food Packaging

#58
20090269603
2009-10-29

Aqueous Glyoxyl-Based Insolubilizer Composition for the Surface Treatment of Paper and Cardboard

#59
20080179028
2008-07-31

System and method to control press section dewatering on paper and pulp drying machines using chemical dewatering agents

#60
20080149290
2008-06-26

MANUFACTURING PROCESS OF A PAPER SUBSTRATE INTENDED TO BE VULCANISED OR PARCHMENTISED

#61
20080076956
2008-03-27

Lignocellulose-based anion-adsorbing medium (LAM) and process for making and using same for the selective removal of phosphate and arsenic anionic contaminants from aqueous solutions

#62
20060222825
2006-10-05

Method for use of a polymer coated paper or board as printing substrate, a printed product obtained by the method and use of a coating

#63
20060169427
2006-08-03

Manufacturing process of a paper substrate intended to be vulcanised or parchmentised

#64
20060162887
2006-07-27

System and method to control press section dewatering on paper and pulp drying machines using chemical dewatering agents

#65
20050252626
2005-11-17

Soft durable tissue

#66
20050238700
2005-10-27

Paper tissue with high lotion transferability

#67
20050238682
2005-10-27

Tissue paper with protruding lotion deposits

#68
20050224201
2005-10-13

Treated crimped multi-ply product

#69
20050098503
2005-05-12

Lignocellulose-based anion-adsorbing medium (LAM) and process for making and using same for the selective removal of phosphate and arsenic anionic contaminants from aqueous solutions

#70
13853833
2014-08-19

Substrate treatment processes