ClassID:

127038

D21H23/32 - 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 by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper

Sub-classes:
Recent Application in this class:
#1
20250098882
2025-03-27

ZEIN COATED OR IMPREGNATED PAPER STRAWS AND RELATED TUBLAR ARTICLE

#2
20240218577
2024-07-04

BIOBASED BINDER COMPOSITIONS FOR AIRLAID NONWOVEN MATERIALS

#3
20230022618
2023-01-26

Germ-repellent book and food paper packaging, and method of manufacture

#4
20220064861
2022-03-03

Germ-repellent book and food paper packaging, and method of manufacture

#5
20200109517
2020-04-09

Oil and grease resistant paperboard

#6
20190161914
2019-05-30

Oil and grease resistant paperboard

#7
20180202106
2018-07-19

Printable compostable paperboard

#8
20180065824
2018-03-08

Conveyor for web

#9
20170114502
2017-04-27

CF paper

#10
20170002517
2017-01-05

Printable compostable paperboard

#11
20160340833
2016-11-24

Compostable paperboard with oil, grease, and moisture resistance

#12
20160230343
2016-08-11

Oil, grease, and moisture resistant paperboard

#13
20130008373
2013-01-10

ROD BED LOCKING SYSTEMS

#14
20110195193
2011-08-11

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

#15
20110017131
2011-01-27

Doctor apparatus

#16
20090181176
2009-07-16

Method and apparatus for separating impurities from machine circulation of coating station

#17
20080083523
2008-04-10

Temperature control device

#18
20070104873
2007-05-10

Doctor method

#19
20060243201
2006-11-02

Doctor bed

#20
20060113707
2006-06-01

Crosslinking agent application method and system

#21
20050155546
2005-07-21

Application device

#22
20050066889
2005-03-31

Method and apparatus for feeding a treating agent onto a moving surface

#23
20050051084
2005-03-10

Method and apparatus for the high speed application of coating to a traveling paper web