ClassID:

127027

D21H23/10 - 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; Controlling the addition by measuring pulp properties, e.g. zeta potential, pH at least two kinds of compounds being added

Recent Application in this class:
#1
20260103843
2026-04-16

A METHOD FOR REDUCING THE LOAD OF MICROBIAL CONTAMINANTS IN A PULP STOCK COMPRISING A RECYCLED FIBER FRACTION

#2
20250347056
2025-11-13

Glycoxylated Starch Additive for Pulp Products

#3
20240183109
2024-06-06

Multi-Region Pulp Article

#4
20240026606
2024-01-25

METHOD FOR SEPARATING CELLULOSIC PARTICULATES OUT OF FIBER SUSPENSIONS AND/OR FILTRATES

#5
20230304226
2023-09-28

GLYOXYLATED STARCH ADDITIVE FOR PULP PRODUCTS

#6
20230212820
2023-07-06

High cationic starch as a promoter in AKD sizing emulsions

#7
20190242065
2019-08-08

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

#8
20180051416
2018-02-22

Method for producing paper

#9
20170342663
2017-11-30

On-line control and reaction process for pH adjustment

#10
20160208438
2016-07-21

Flame-resistant paper for wave absorber member and wave absorber member

#11
20160017542
2016-01-21

Durable creped tissue

#12
20120308744
2012-12-06

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

#13
20090211721
2009-08-27

Method and arrangement for feeding chemicals into a process stream

#14
20090139676
2009-06-04

ASA emulsification with ultrasound

#15
20090025895
2009-01-29

Process for the Manufacture of Paper and Board

#16
20080011788
2008-01-17

Method and arrangement for feeding chemicals into a papermaking process

#17
20070272380
2007-11-29

Method of making a paper web containing refined long fiber using a charge controlled headbox

#18
20070215301
2007-09-20

Method for making a low density multi-ply paperboard with high internal bond strength

#19
20070169908
2007-07-26

Method and arrangement for feeding chemicals into a process stream

#20
20070107866
2007-05-17

Papermaking process

#21
20060213630
2006-09-28

Method for making a low density multi-ply paperboard with high internal bond strength

#22
20060032595
2006-02-16

Method of making a paper web containing refined long fiber using a charge controlled headbox and a single ply towel made by the process