ClassID:

127062

D21H23/78 - CPC Classification

Classification description:

Processes or apparatus for adding material to the pulp or to the paper Controlling or regulating not limited to any particular process or apparatus

Recent Application in this class:
#1
20260062867
2026-03-05

Process Modelling Method and System for Non-Linear Continuous-Like Process and Application in Pulp and Paper Industry

#2
20250354336
2025-11-20

Internal Spraying of Paper Product Cores

#3
20250327248
2025-10-23

SPACING-AWARE PLANT DETECTION MODEL FOR AGRICULTURE TASK CONTROL

#4
20250198086
2025-06-19

Biocide control in paper making

#5
20250163649
2025-05-22

OFFLINE ROLL TO ROLL WEB COATING

#6
20250163648
2025-05-22

IN-LINE APPLICATION OF DISPERSION BARRIER

#7
20240344275
2024-10-17

System and Method for Quantifying a Degree of Fibrillation of Fibers Within Pulp Using Image Processing

#8
20230399800
2023-12-14

PAPER SUBSTRATES INCORPORATING COVERT MARKING PIGMENTS, AND PROCESSES FOR OBTAINING AND USING SAME

#9
20230287629
2023-09-14

PULP QUALITY MONITORING

#10
20210156092
2021-05-27

Pulp quality monitoring

#11
20210108372
2021-04-15

Fibrous body manufacturing apparatus and fibrous body manufacturing method

#12
20200399834
2020-12-24

Paper substrates incorporating covert marking pigments, and processes for obtaining and using same

#13
20200141060
2020-05-07

Monitoring system for monitoring the conditions of a band circulating in a papermaking machine

#14
20200095730
2020-03-26

Method for manufacturing a fibrous web

#15
20190316297
2019-10-17

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

#16
20190315084
2019-10-17

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

#17
20190153675
2019-05-23

Method of measuring hydrophobic contaminants in a pulp slurry or a papermaking system

#18
20190121330
2019-04-25

Raw material supply device, raw material supply method, and sheet manufacturing apparatus

#19
20170275824
2017-09-28

Monitoring applicator rods

#20
20160362840
2016-12-15

Monitoring applicator rods and applicator rod nips

#21
20160362267
2016-12-15

Monitoring applicator rods

#22
20160305890
2016-10-20

Optical determination of anionic charge in a process stream

#23
20160281299
2016-09-29

Method and apparatus for continuous manufacture of surface sizing starch, wet-end starch or binder starch in paper, cardboard and chemical pulp industry

#24
20160177505
2016-06-23

Method for controlling deposits on papermaking surfaces

#25
20160122948
2016-05-05

FILM PRESS AND METHOD FOR OPERATING A FILM PRESS

#26
20150075741
2015-03-19

Method for automatically determining stickies in a recycled fibre process

#27
20130242292
2013-09-19

Inspection system for coated paper

#28
20130064968
2013-03-14

Method and apparatus for controlling a coating head, and a coating head

#29
20120031577
2012-02-09

Fluorometric method for monitoring surface additives in a papermaking process

#30
20110204232
2011-08-25

Determining the amount of starch

#31
20110195193
2011-08-11

AN END SEALING DEVICE FOR A METERING NIP, A COATER WITH A SEALED END AND A METHOD OF USING SAME

#32
20110039015
2011-02-17

Control of a coating process

#33
20090301303
2009-12-10

Method and apparatus for degassing coating material

#34
20090141963
2009-06-04

Method and apparatus for measuring deposition of particulate contaminants in pulp and paper slurries

#35
20090139676
2009-06-04

ASA emulsification with ultrasound

#36
20090126889
2009-05-21

FLUOROMETRIC METHOD FOR MONITORING SURFACE ADDITIVES IN A PAPERMAKING PROCESS

#37
20090126888
2009-05-21

FLUOROMETRIC METHOD FOR MONITORING SURFACE ADDITIVES IN A PAPERMAKING PROCESS

#38
20090005897
2009-01-01

Method for supplying a chemical or chemical compound in a fibrous web machine and an apparatus for implementing the method

#39
20080250848
2008-10-16

Changing and measuring consistency

#40
20080196853
2008-08-21

Method of monitoring surface associated microbiological activity in process streams

#41
20080179028
2008-07-31

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

#42
20080011788
2008-01-17

Method and arrangement for feeding chemicals into a papermaking process

#43
20070227447
2007-10-04

Control of a coating process

#44
20070134649
2007-06-14

Method for monitoring the presence of biofilmforming microorganisms in paper industry

#45
20070107860
2007-05-17

METHOD AND MACHINE FOR PRODUCING A FIBROUS WEB

#46
20070095495
2007-05-03

Method and apparatus for producing a fibrous web

#47
20070029060
2007-02-08

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

#48
20060225303
2006-10-12

Method and device for controlling the moisture or coating quantity profile in a paper web

#49
20060196621
2006-09-07

Virtual hand sheet method and system for estimating paper properties

#50
20060182889
2006-08-17

Method for feeding a treating agent to an application apparatus

#51
20060162887
2006-07-27

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

#52
20050230071
2005-10-20

Method for incorporating feature substances into a paper web

#53
20050106312
2005-05-19

Method and apparatus for measuring amount of coating on paper web