ClassID:

127026

D21H23/08 - 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

Sub-classes:
Recent Application in this class:
#1
20250237014
2025-07-24

SYSTEM AND METHOD OF REAL-TIME ENZYMATIC ACTIVITY DETECTION AND DYNAMIC FORMULATION FOR PULP AND PAPER PRODUCTION

#2
20250146224
2025-05-08

METHODS AND COMPOSITIONS FOR PAPERMAKING

#3
20250034813
2025-01-30

A METHOD FOR IMPROVING GREASE AND OIL RESISTANCE OF A FIBER BASED ARTICLE

#4
20240318383
2024-09-26

SOFTENER CONCENTRATE, SOFTENER EMULSION, METHOD FOR PRODUCING SOFTENER EMULSION AND ITS USE

#5
20240035235
2024-02-01

METHOD FOR PRODUCING WET-RUNNING FRICTION PAPER

#6
20240003090
2024-01-04

METHOD FOR MANUFACTURING MOLDED BODY

#7
20220325473
2022-10-13

Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance

#8
20180162966
2018-06-14

METHOD FOR PRODUCING POLYACRYLAMIDE COMPOSITION

#9
20180044856
2018-02-15

Manufacture of hydrated nanocellulose sheets for use as a dermatological treatment

#10
20170342663
2017-11-30

On-line control and reaction process for pH adjustment

#11
20160305890
2016-10-20

Optical determination of anionic charge in a process stream

#12
20130207054
2013-08-15

Use of 2-aminoethanol as additive in aqueous suspensions of calcium carbonate comprising materials

#13
20120031577
2012-02-09

Fluorometric method for monitoring surface additives in a papermaking process

#14
20110277949
2011-11-17

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

#15
20100032115
2010-02-11

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

#16
20100032114
2010-02-11

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

#17
20090126888
2009-05-21

FLUOROMETRIC METHOD FOR MONITORING SURFACE ADDITIVES IN A PAPERMAKING PROCESS

#18
20070272380
2007-11-29

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

#19
20070215301
2007-09-20

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

#20
20070044929
2007-03-01

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

#21
20070004829
2007-01-04

Adhesive composition and method

#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

#23
20050274473
2005-12-15

Dynamic calibration of papermaking machine