ClassID:

127058

D21H23/72 - 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; Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group Plural serial stages only

Recent Application in this class:
#1
20260015798
2026-01-15

METHOD AND COMPOSITION PROVIDING ENHANCED ALCOHOL BARRIER FOR PAPER PACKAGING APPLICATIONS

#2
20250283278
2025-09-11

Water-Based Coatings for Cellulosic Substrates

#3
20250187364
2025-06-12

Metalized Powder Painted Color Sample

#4
20250163649
2025-05-22

OFFLINE ROLL TO ROLL WEB COATING

#5
20240426058
2024-12-26

METHOD FOR PRODUCING DECORATIVE PAPER

#6
20240247442
2024-07-25

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

#7
20240218600
2024-07-04

WATER-BASED COATINGS FOR CELLULOSIC SUBSTRATES

#8
20240191433
2024-06-13

NEW SUBSTRATE

#9
20240186552
2024-06-06

CARBON SHEET, METHOD FOR MANUFACTURING SAME, GAS DIFFUSION ELECTRODE, AND FUEL CELL

#10
20240183111
2024-06-06

AQUEOUS BARRIER COATINGS AND METHODS OF IMPROVING BARRIER PROPERTIES OF PACKAGING MATERIALS

#11
20240167228
2024-05-23

A METHOD FOR COATING A HOLLOW CONTAINER COMPRISING MOLDED PULP

#12
20240133120
2024-04-25

PROCESSES FOR IMPARTING OIL AND GREASE RESISTANCE TO PAPER PRODUCTS

#13
20240026610
2024-01-25

METHOD FOR CONTROLLING DECOMPOSITION OF CORROSION-RESISTANT PAPER

#14
20230416992
2023-12-28

BARRIER FILM FOR PACKAGING MATERIAL

#15
20230366152
2023-11-16

METHOD

#16
20230212825
2023-07-06

A PACKAGING MATERIAL FOR PACKAGING OF LIQUID AND FOOD

#17
20220251786
2022-08-11

Fiber body forming method and fiber body forming apparatus

#18
20210148053
2021-05-20

Hydrolytic sheet and method for manufacturing hydrolytic sheet

#19
20210002830
2021-01-07

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

#20
20200165780
2020-05-28

Fiber body forming method and fiber body forming apparatus

#21
20200109517
2020-04-09

Oil and grease resistant paperboard

#22
20190161914
2019-05-30

Oil and grease resistant paperboard

#23
20190023444
2019-01-24

MANUFACTURING PROCESS OF CONTAINER LABELS WITH HEAT TRANSFER TECHNOLOGY WITH SEQUENTIAL ALPHANUMERIC IDENTIFICATION CODES APPLIED THEREON

#24
20180298557
2018-10-18

Methods for treating paperboards and paper media, and associated treated paperboards and paper media

#25
20180202106
2018-07-19

Printable compostable paperboard

#26
20170259557
2017-09-14

MANUFACTURING PROCESS OF PACKING LABELS WITH HEAT TRANSFER TECHNOLOGY WITH SEQUENTIAL ALPHANUMERIC IDENTIFICATION CODES APPLIED THEREON

#27
20170253021
2017-09-07

MANUFACTURING PROCESS OF PACKING LABELS WITH HEAT TRANSFER TECHNOLOGY WITH SEQUENTIAL ALPHANUMERIC IDENTIFICATION CODES APPLIED THEREON

#28
20170036438
2017-02-09

MANUFACTURING PROCESS OF PACKING LABELS WITH HEAT TRANSFER TECHNOLOGY WITH SEQUENTIAL ALPHANUMERIC IDENTIFICATION CODES APPLIED THEREON

#29
20170002517
2017-01-05

Printable compostable paperboard

#30
20160340833
2016-11-24

Compostable paperboard with oil, grease, and moisture resistance

#31
20160230343
2016-08-11

Oil, grease, and moisture resistant paperboard

#32
20150376839
2015-12-31

Device and method for cutting to size coated decorative paper web sections and use of a device

#33
20150354140
2015-12-10

Method of preparing a treated article and treated article formed therefrom

#34
20140290883
2014-10-02

Method of preparing a treated article and treated article formed therefrom

#35
20130180678
2013-07-18

Method of preparing a treated article and treated article formed therefrom

#36
20120308744
2012-12-06

Printable sheet that is ultra-smooth and recyclable, and its method of fabrication

#37
20120114918
2012-05-10

Method for manufacturing a resin-impregnated decorative paper, and decorative panel

#38
20100009168
2010-01-14

COATED PAPER OR BOARD PRODUCT AND PROCESS FOR THE PREPARATION THEREOF

#39
20090104421
2009-04-23

PROCESS FOR MAKING A LAMINATE

#40
20080314544
2008-12-25

Method and Device for Applying a Coating Medium in a Machine Used for Producing a Fiber Web

#41
20080199666
2008-08-21

Manufacture of an Impregnated Paper or Non-Woven

#42
20080044618
2008-02-21

Method and Apparatus for Coating a Substrate and Printed Matter

#43
20070178261
2007-08-02

Paper envelope having an integrated magnetic recording medium

#44
20070178260
2007-08-02

Paper having discrete regions of ferromagnetic material and process of making the same

#45
20070169902
2007-07-26

Method of producing coated paper with reduced gloss mottle

#46
20060249266
2006-11-09

Machine for making/treating a sheet of material

#47
20050100678
2005-05-12

Machine for producing and treating a sheet of material

#48
20050098285
2005-05-12

Machine for making/treating a sheet of material

#49
20050008785
2005-01-13

Method and apparatus for coating both sides of a web