ClassID:

127057

D21H23/70 - 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

Sub-classes:
Recent Application in this class:
#1
20240229360
2024-07-11

IMPERMEABILIZATION TREATMENT OF PAPER OR CARDBOARD AND IMPERMEABLE PAPER OR CARDBOARD THUS OBTAINED

#2
20240175214
2024-05-30

FILTER MATERIAL FOR FOOD PACKAGING

#3
20240133121
2024-04-25

IMPERMEABILIZATION TREATMENT OF PAPER OR CARDBOARD AND IMPERMEABLE PAPER OR CARDBOARD THUS OBTAINED

#4
20220403203
2022-12-22

Water Vapor Barrier Coating Composition

#5
20210381171
2021-12-09

Hot-press gas grafting hydrophobization apparatus, and eco-friendly oil-absorbing low- weight paper manufactured using same

#6
20200216678
2020-07-09

Compositions and methods for pretreating substrates for the subsequent fixing of vapor phase corrosion inhibitors

#7
20190271116
2019-09-05

Paper with water repellent and partially heat sealing properties

#8
20190211487
2019-07-11

METHOD OF MAKING DISPERSIBLE WET WIPES VIA PATTERNED BINDER APPLICATION

#9
20180155876
2018-06-07

HONEYCOMB CORE HAVING A HIGH COMPRESSION STRENGTH

#10
20180065824
2018-03-08

Conveyor for web

#11
20170342661
2017-11-30

Process for the production of a coated substance comprising cellulosic fibres

#12
20160376750
2016-12-29

Method for manufacturing a packaging material and a packaging material made by the method

#13
20160097162
2016-04-07

Honeycomb core having a high compression strength

#14
20150376839
2015-12-31

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

#15
20150305814
2015-10-29

Online treated sealable and peelable medical paper for medical sterilization packaging

#16
20150086712
2015-03-26

Method for coating a paper web

#17
20120308744
2012-12-06

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

#18
20120055642
2012-03-08

IMPROVING THE STRENGTH OF PAPER AND BOARD PRODUCTS

#19
20090324980
2009-12-31

Process for Producing Coated Paper and Coated Paper

#20
20090151883
2009-06-18

Method of manufacturing coated paper

#21
20090133201
2009-05-28

Process for surface colouration of paper

#22
20090087568
2009-04-02

Method for manufacturing an inkjet recording medium

#23
20080090032
2008-04-17

Method of producing decorative paper and decorative laminate comprising such decorative paper

#24
20070248763
2007-10-25

METHOD FOR APPLYING A MULTIPLE LAYER DIRECTLY TO A PAPER, BOARD OR OTHER MOVING WEB OF FIBROUS MATERIAL

#25
20060124263
2006-06-15

Method and apparatus in the surface sizing of a paper or board web

#26
20050072541
2005-04-07

Sizing method for board